[AST] Build recovery expression by default for all language.

[hokein]

Summary

The dependency mechanism for C has been implemented, and we have rolled out this to all internal users, didn't see crashy issues, we consider it is stable enough.

[hokein]

fix unexpected format changes.

[sammccall]

clang/test/CodeGen/builtins-ppc-error.c

51

hmm, this doesn't exactly look right to me - we know the type of vsi so we should only be considering the signed case I thought.

However the existing diagnostic for vui indicates that it's considering the signed case, so I guess this is already broken/bad.

clang/test/CodeGen/builtins-systemz-zvector-error.c

424

you may want to make these assertions fuzzier and possibly give a count rather than repeating them, but I guess the owners of these headers would be best to decide

clang/test/Index/complete-switch.c

9

nit: no need for xclang, this is cc1 already

I guess this is a crash test (and it also doesn't crash with recovery ast)?

clang/test/Sema/__try.c

55

this seems bad, am I missing something?

clang/test/Sema/enum.c

104

or just move the semicolon to suppress, pretty sure that's not what's being tested here.

clang/test/Sema/typo-correction.c

56

what's up with this change?
Do we see the LHS is dependent/contains-errors and then give up on correcting typos in the RHS?
Should we?

[hokein]

rebase and address comments.

[hokein]

clang/test/CodeGen/builtins-ppc-error.c

51

yeah, we should know this is the signed case.

after the macro expansion, the code looks like

_Generic((vsi), vector int
           : (vector float)__builtin_altivec_vcfsx((vector int)(vsi), (index)), vector unsigned int
           : (vector float)__builtin_altivec_vcfux((vector unsigned int)(vsi), (index)));

it is a GenericSelectionExpr which contains a switch-like structure (see the AST below), so when we traverse it, we will traverse both __builtin_altivec_vcfsx and __builtin_altivec_vcfux.

`-GenericSelectionExpr 0x9527238 <line:31:3, line:33:88> '__vector float' contains-errors
    |-ImplicitCastExpr 0x9527220 <line:31:12, col:16> '__vector int' <LValueToRValue>
    | `-ParenExpr 0x9526980 <col:12, col:16> '__vector int' lvalue
    |   `-DeclRefExpr 0x9526960 <col:13> '__vector int' lvalue Var 0x9526568 'vsi' '__vector int' non_odr_use_unevaluated
    |-VectorType 0x91923c0 '__vector int' altivec 4
    | `-BuiltinType 0x91296e0 'int'
    |-case  '__vector int' selected
    | |-VectorType 0x91923c0 '__vector int' altivec 4
    | | `-BuiltinType 0x91296e0 'int'
    | `-CStyleCastExpr 0x9526db8 <line:32:14, col:78> '__vector float' contains-errors <Dependent>
    |   `-RecoveryExpr 0x9526d70 <col:28, col:78> '<dependent type>' contains-errors lvalue
    |     |-DeclRefExpr 0x9526bc0 <col:28> '<builtin fn type>' Function 0x95269e8 '__builtin_altivec_vcfsx' '__attribute__((__vector_size__(4 * sizeof(float)))) float (__attribute__((__vector_size__(4 * sizeof(int)))) int, int)'
    |     |-CStyleCastExpr 0x9526c68 <col:52, col:68> '__vector int' <BitCast>
    |     | `-ImplicitCastExpr 0x9526c50 <col:64, col:68> '__vector int' <LValueToRValue> part_of_explicit_cast
    |     |   `-ParenExpr 0x9526c30 <col:64, col:68> '__vector int' lvalue
    |     |     `-DeclRefExpr 0x9526be0 <col:65> '__vector int' lvalue Var 0x9526568 'vsi' '__vector int'
    |     `-ParenExpr 0x9526cb0 <col:71, col:77> 'const int' lvalue
    |       `-DeclRefExpr 0x9526c90 <col:72> 'const int' lvalue ParmVar 0x95267c8 'index' 'const int'
    `-case  '__vector unsigned int'
      |-VectorType 0x9192700 '__vector unsigned int' altivec 4
      | `-BuiltinType 0x9129780 'unsigned int'
      `-CStyleCastExpr 0x95271f8 <line:33:14, col:87> '__vector float' contains-errors <Dependent>
        `-RecoveryExpr 0x95271b0 <col:28, col:87> '<dependent type>' contains-errors lvalue
          |-DeclRefExpr 0x9527000 <col:28> '<builtin fn type>' Function 0x9526e28 '__builtin_altivec_vcfux' '__attribute__((__vector_size__(4 * sizeof(float)))) float (__attribute__((__vector_size__(4 * sizeof(unsigned int)))) unsigned int, int)'
          |-CStyleCastExpr 0x95270a8 <col:52, col:77> '__vector unsigned int' <BitCast>
          | `-ImplicitCastExpr 0x9527090 <col:73, col:77> '__vector int' <LValueToRValue> part_of_explicit_cast
          |   `-ParenExpr 0x9527070 <col:73, col:77> '__vector int' lvalue
          |     `-DeclRefExpr 0x9527020 <col:74> '__vector int' lvalue Var 0x9526568 'vsi' '__vector int'
          `-ParenExpr 0x95270f0 <col:80, col:86> 'const int' lvalue
            `-DeclRefExpr 0x95270d0 <col:81> 'const int' lvalue ParmVar 0x95267c8 'index' 'const int'

However the existing diagnostic for vui indicates that it's considering the signed case, so I guess this is already broken/bad.

hmm, vsi and vui have the same type vector signed int, so I think there is a typo for vui, it should be vector unsigned int?

clang/test/Index/complete-switch.c

9

yes, the crash was caused by accesing a null-like ast node. With recovery ast, it is not true any more.

clang/test/Sema/__try.c

55

agree, __except makes it very confusing intuitively.

what's happening? - while at here, there is no preceding __try, clang parses __execept as a function call to an implicit function, so it expects a ; after __except (FilterExpression());

why don't we hit this before? -- because the FilterExpression() is invalid (missing an argument), and the whole function call expr is being dropped. With recovery-ast, we preserve the whole function call, then we emit the ; diagnostic.

not quite sure on how to make it clearer. I think this is not super critical.

clang/test/Sema/typo-correction.c

56

I'd say this aligns with C++ behavior (the inner typo is not correct in C++ mode neither). The reason why it works here is due to the early typo-correction hack.

[hokein]

@hubert.reinterpretcast, similar to D78350, could you help to test this patch with your downstream clang? this patch is based on 2c2dc7c392a3f28d4dbec3018e3137d5d4f8c6c8. Thanks!

[hokein]

rebase

[hokein]

should be ready to go -- from our internal experiment, we don't see any super crashes.

[sammccall]

clang/test/CodeGen/builtins-ppc-error.c

51

it is a GenericSelectionExpr which contains a switch-like structure (see the AST below), so when we traverse it, we will traverse both builtin_altivec_vcfsx and builtin_altivec_vcfux.

OK, that makes sense I guess.

I think there is a typo for vui, it should be vector unsigned int?

Yep, that definitely looks to be the case.

clang/test/Sema/__try.c

55

Yes, this isn't critical and we were just getting a bit lucky before. No need for changes.

[hokein]

rebase and update

[shafik]

Hello folks, it looks like this PR is linked to a crash bug: https://github.com/llvm/llvm-project/issues/62711

clang/include/clang/Basic/LangOptions.def

 LANGOPT(NoMathBuiltin     , 1, 0, "disable math builtin functions")
 LANGOPT(GNUAsm            , 1, 1, "GNU-style inline assembly")
 LANGOPT(Coroutines        , 1, 0, "C++20 coroutines")
 LANGOPT(DllExportInlines  , 1, 1, "dllexported classes dllexport inline methods")
 LANGOPT(RelaxedTemplateTemplateArgs, 1, 0, "C++17 relaxed matching of template template arguments")
 
 LANGOPT(DoubleSquareBracketAttributes, 1, 0, "'[[]]' attributes extension for all language standard modes")
 
-COMPATIBLE_LANGOPT(RecoveryAST, 1, 0, "Preserve expressions in AST when encountering errors")
-COMPATIBLE_LANGOPT(RecoveryASTType, 1, 0, "Preserve the type in recovery expressions")
+COMPATIBLE_LANGOPT(RecoveryAST, 1, 1, "Preserve expressions in AST when encountering errors")
+COMPATIBLE_LANGOPT(RecoveryASTType, 1, 1, "Preserve the type in recovery expressions")
 
 BENIGN_LANGOPT(ThreadsafeStatics , 1, 1, "thread-safe static initializers")
 LANGOPT(POSIXThreads      , 1, 0, "POSIX thread support")
 LANGOPT(Blocks            , 1, 0, "blocks extension to C")
 BENIGN_LANGOPT(EmitAllDecls      , 1, 0, "emitting all declarations")
 LANGOPT(MathErrno         , 1, 1, "errno in math functions")
 BENIGN_LANGOPT(HeinousExtensions , 1, 0, "extensions that we really don't like and may be ripped out at any time")
 LANGOPT(Modules           , 1, 0, "modules semantics")

clang/lib/Frontend/CompilerInvocation.cpp

if (Opts.NewAlignOverride && !llvm::isPowerOf2_32(Opts.NewAlignOverride)) {
     Diags.Report(diag::err_fe_invalid_alignment) << A->getAsString(Args)
                                                  << A->getValue();
     Opts.NewAlignOverride = 0;
   }
   Opts.ConceptSatisfactionCaching =
       !Args.hasArg(OPT_fno_concept_satisfaction_caching);
   if (Args.hasArg(OPT_fconcepts_ts))
     Diags.Report(diag::warn_fe_concepts_ts_flag);
-  // Recovery AST still heavily relies on dependent-type machinery.
-  Opts.RecoveryAST =
-      Args.hasFlag(OPT_frecovery_ast, OPT_fno_recovery_ast, Opts.CPlusPlus);
-  Opts.RecoveryASTType = Args.hasFlag(
-      OPT_frecovery_ast_type, OPT_fno_recovery_ast_type, Opts.CPlusPlus);
+  Opts.RecoveryAST = Args.hasFlag(OPT_frecovery_ast, OPT_fno_recovery_ast);
+  Opts.RecoveryASTType =
+      Args.hasFlag(OPT_frecovery_ast_type, OPT_fno_recovery_ast_type);
   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
   Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
   Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
   Opts.InstantiationDepth =
       getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags);
   Opts.ArrowDepth =
       getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);

clang/test/CodeGen/builtins-ppc-error.c

void testXXSLDWI(int index) {
   vec_xxsldwi(vsi); //expected-error {{too few arguments to function call, expected 3, have 1}}
   vec_xxsldwi(vsi, vsi, 2, 4); //expected-error {{too many arguments to function call, expected 3, have 4}}
   vec_xxsldwi(vsi, vsi, index); //expected-error {{argument 3 to '__builtin_vsx_xxsldwi' must be a 2-bit unsigned literal (i.e. 0, 1, 2 or 3)}}
   vec_xxsldwi(1, 2, 3); //expected-error {{first two arguments to '__builtin_vsx_xxsldwi' must be vectors}}
   vec_xxsldwi(vsi, vuc, 2); //expected-error {{first two arguments to '__builtin_vsx_xxsldwi' must have the same type}}
 }
 
 void testCTF(int index) {
-  vec_ctf(vsi, index); //expected-error {{argument to '__builtin_altivec_vcfsx' must be a constant integer}}
-  vec_ctf(vui, index); //expected-error {{argument to '__builtin_altivec_vcfsx' must be a constant integer}}
+  vec_ctf(vsi, index); //expected-error {{argument to '__builtin_altivec_vcfsx' must be a constant integer}} expected-error {{argument to '__builtin_altivec_vcfux' must be a constant integer}}
+  vec_ctf(vui, index); //expected-error {{argument to '__builtin_altivec_vcfsx' must be a constant integer}} expected-error {{argument to '__builtin_altivec_vcfux' must be a constant integer}}
 }
 
 void testVCFSX(int index) {
   vec_vcfsx(vsi, index); //expected-error {{argument to '__builtin_altivec_vcfsx' must be a constant integer}}
 }
 
 void testVCFUX(int index) {
   vec_vcfux(vui, index); //expected-error {{argument to '__builtin_altivec_vcfux' must be a constant integer}}

clang/test/CodeGen/builtins-systemz-zvector-error.c

len = __lcbb(cptr, idx);   // expected-error {{no matching function}}
                              // expected-note@vecintrin.h:* {{must be a constant power of 2 from 64 to 4096}}
   len = __lcbb(cptr, 200);   // expected-error {{no matching function}}
                              // expected-note@vecintrin.h:* {{must be a constant power of 2 from 64 to 4096}}
   len = __lcbb(cptr, 32);    // expected-error {{no matching function}}
                              // expected-note@vecintrin.h:* {{must be a constant power of 2 from 64 to 4096}}
   len = __lcbb(cptr, 8192);  // expected-error {{no matching function}}
                              // expected-note@vecintrin.h:* {{must be a constant power of 2 from 64 to 4096}}
 
-  vsl = vec_permi(vsl, vsl, idx); // expected-error {{no matching function}}
+  vsl = vec_permi(vsl, vsl, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vpdi' must be a constant integer}}
                                   // expected-note@vecintrin.h:* 3 {{candidate function not viable}}
                                   // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
   vsl = vec_permi(vsl, vsl, -1);  // expected-error {{no matching function}}
                                   // expected-note@vecintrin.h:* 3 {{candidate function not viable}}
                                   // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
   vsl = vec_permi(vsl, vsl, 4);   // expected-error {{no matching function}}
                                   // expected-note@vecintrin.h:* 3 {{candidate function not viable}}
                                   // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
-  vul = vec_permi(vul, vul, idx); // expected-error {{no matching function}}
+  vul = vec_permi(vul, vul, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vpdi' must be a constant integer}}
                                   // expected-note@vecintrin.h:* 2 {{candidate function not viable}}
                                   // expected-note@vecintrin.h:* 2 {{must be a constant integer from 0 to 3}}
   vul = vec_permi(vul, vul, -1);  // expected-error {{no matching function}}
                                   // expected-note@vecintrin.h:* 2 {{candidate function not viable}}
                                   // expected-note@vecintrin.h:* 2 {{must be a constant integer from 0 to 3}}
   vul = vec_permi(vul, vul, 4);   // expected-error {{no matching function}}
                                   // expected-note@vecintrin.h:* 2 {{candidate function not viable}}
                                   // expected-note@vecintrin.h:* 2 {{must be a constant integer from 0 to 3}}
-  vbl = vec_permi(vbl, vbl, idx); // expected-error {{no matching function}}
+  vbl = vec_permi(vbl, vbl, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vpdi' must be a constant integer}}
                                   // expected-note@vecintrin.h:* 2 {{candidate function not viable}}
                                   // expected-note@vecintrin.h:* 2 {{must be a constant integer from 0 to 3}}
   vbl = vec_permi(vbl, vbl, -1);  // expected-error {{no matching function}}
                                   // expected-note@vecintrin.h:* 2 {{candidate function not viable}}
                                   // expected-note@vecintrin.h:* 2 {{must be a constant integer from 0 to 3}}
   vbl = vec_permi(vbl, vbl, 4);   // expected-error {{no matching function}}
                                   // expected-note@vecintrin.h:* 2 {{candidate function not viable}}
                                   // expected-note@vecintrin.h:* 2 {{must be a constant integer from 0 to 3}}
-  vd = vec_permi(vd, vd, idx);    // expected-error {{no matching function}}
+  vd = vec_permi(vd, vd, idx);    // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vpdi' must be a constant integer}}
                                   // expected-note@vecintrin.h:* 3 {{candidate function not viable}}
                                   // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
   vd = vec_permi(vd, vd, -1);     // expected-error {{no matching function}}
                                   // expected-note@vecintrin.h:* 3 {{candidate function not viable}}
                                   // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
   vd = vec_permi(vd, vd, 4);      // expected-error {{no matching function}}
                                   // expected-note@vecintrin.h:* 3 {{candidate function not viable}}
                                   // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
vec_scatter_element(vd, vul, ptrd, idx);   // expected-error {{no matching function}}
                                              // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 1}}
   vec_scatter_element(vd, vul, ptrd, -1);    // expected-error {{no matching function}}
                                              // expected-note@vecintrin.h:* 6 {{candidate function not viable}}
                                              // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 1}}
   vec_scatter_element(vd, vul, ptrd, 2);     // expected-error {{no matching function}}
                                              // expected-note@vecintrin.h:* 6 {{candidate function not viable}}
                                              // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 1}}
 
-  vsc = vec_load_bndry(cptrsc, idx);   // expected-error {{no matching function}}
-                                       // expected-note@vecintrin.h:* 9 {{must be a constant power of 2 from 64 to 4096}}
-  vsc = vec_load_bndry(cptrsc, 200);   // expected-error {{no matching function}}
-                                       // expected-note@vecintrin.h:* 9 {{must be a constant power of 2 from 64 to 4096}}
-  vsc = vec_load_bndry(cptrsc, 32);    // expected-error {{no matching function}}
-                                       // expected-note@vecintrin.h:* 9 {{must be a constant power of 2 from 64 to 4096}}
-  vsc = vec_load_bndry(cptrsc, 8192);  // expected-error {{no matching function}}
-                                       // expected-note@vecintrin.h:* 9 {{must be a constant power of 2 from 64 to 4096}}
-  vuc = vec_load_bndry(cptruc, idx);   // expected-error {{no matching function}}
-                                       // expected-note@vecintrin.h:* 9 {{must be a constant power of 2 from 64 to 4096}}
-  vss = vec_load_bndry(cptrss, idx);   // expected-error {{no matching function}}
-                                       // expected-note@vecintrin.h:* 9 {{must be a constant power of 2 from 64 to 4096}}
-  vus = vec_load_bndry(cptrus, idx);   // expected-error {{no matching function}}
-                                       // expected-note@vecintrin.h:* 9 {{must be a constant power of 2 from 64 to 4096}}
-  vsi = vec_load_bndry(cptrsi, idx);   // expected-error {{no matching function}}
-                                       // expected-note@vecintrin.h:* 9 {{must be a constant power of 2 from 64 to 4096}}
-  vui = vec_load_bndry(cptrui, idx);   // expected-error {{no matching function}}
-                                       // expected-note@vecintrin.h:* 9 {{must be a constant power of 2 from 64 to 4096}}
-  vsl = vec_load_bndry(cptrsl, idx);   // expected-error {{no matching function}}
-                                       // expected-note@vecintrin.h:* 9 {{must be a constant power of 2 from 64 to 4096}}
-  vul = vec_load_bndry(cptrul, idx);   // expected-error {{no matching function}}
-                                       // expected-note@vecintrin.h:* 9 {{must be a constant power of 2 from 64 to 4096}}
+  vsc = vec_load_bndry(cptrsc, idx);  // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vlbb' must be a constant integer}}
+  vsc = vec_load_bndry(cptrsc, 200);  // expected-error {{no matching function}} expected-error {{argument value -1 is outside the valid range [0, 15]}}
+  vsc = vec_load_bndry(cptrsc, 32);   // expected-error {{no matching function}} expected-error {{argument value -1 is outside the valid range [0, 15]}}
+  vsc = vec_load_bndry(cptrsc, 8192); // expected-error {{no matching function}} expected-error {{argument value -1 is outside the valid range [0, 15]}}
+  vuc = vec_load_bndry(cptruc, idx);  // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vlbb' must be a constant integer}}
+  vss = vec_load_bndry(cptrss, idx);  // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vlbb' must be a constant integer}}
+  vus = vec_load_bndry(cptrus, idx);  // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vlbb' must be a constant integer}}
+  vsi = vec_load_bndry(cptrsi, idx);  // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vlbb' must be a constant integer}}
+  vui = vec_load_bndry(cptrui, idx);  // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vlbb' must be a constant integer}}
+  vsl = vec_load_bndry(cptrsl, idx);  // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vlbb' must be a constant integer}}
+  vul = vec_load_bndry(cptrul, idx);  // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vlbb' must be a constant integer}}
 
   vuc = vec_genmask(idx);  // expected-error {{no matching function}}
                            // expected-note@vecintrin.h:* {{must be a constant integer}}
 
   vuc = vec_genmasks_8(0, idx);    // expected-error {{no matching function}}
                                    // expected-note@vecintrin.h:* {{must be a constant integer}}
   vuc = vec_genmasks_8(idx, 0);    // expected-error {{no matching function}}
                                    // expected-note@vecintrin.h:* {{must be a constant integer}}
vui = vec_splat_u32(idx); // expected-error {{no matching function}}
                             // expected-note@vecintrin.h:* {{must be a constant integer}}
   vsl = vec_splat_s64(idx); // expected-error {{no matching function}}
                             // expected-note@vecintrin.h:* {{must be a constant integer}}
   vul = vec_splat_u64(idx); // expected-error {{no matching function}}
                             // expected-note@vecintrin.h:* {{must be a constant integer}}
 }
 
 void test_integer(void) {
-  vsc = vec_rl_mask(vsc, vuc, idx); // expected-error {{no matching function}}
+  vsc = vec_rl_mask(vsc, vuc, idx); // expected-error {{no matching function}} \
+                                    // expected-error {{argument to '__builtin_s390_verimb' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimh' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimf' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimg' must be a constant integer}}
                                     // expected-note@vecintrin.h:* 7 {{candidate function not viable}}
                                     // expected-note@vecintrin.h:* 1 {{must be a constant integer}}
-  vuc = vec_rl_mask(vuc, vuc, idx); // expected-error {{no matching function}}
+  vuc = vec_rl_mask(vuc, vuc, idx); // expected-error {{no matching function}} \
+                                    // expected-error {{argument to '__builtin_s390_verimb' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimh' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimf' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimg' must be a constant integer}}
                                     // expected-note@vecintrin.h:* 7 {{candidate function not viable}}
                                     // expected-note@vecintrin.h:* 1 {{must be a constant integer}}
-  vss = vec_rl_mask(vss, vus, idx); // expected-error {{no matching function}}
+  vss = vec_rl_mask(vss, vus, idx); // expected-error {{no matching function}} \
+                                    // expected-error {{argument to '__builtin_s390_verimb' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimh' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimf' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimg' must be a constant integer}}
                                     // expected-note@vecintrin.h:* 7 {{candidate function not viable}}
                                     // expected-note@vecintrin.h:* 1 {{must be a constant integer}}
-  vus = vec_rl_mask(vus, vus, idx); // expected-error {{no matching function}}
+  vus = vec_rl_mask(vus, vus, idx); // expected-error {{no matching function}} \
+                                    // expected-error {{argument to '__builtin_s390_verimb' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimh' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimf' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimg' must be a constant integer}}
                                     // expected-note@vecintrin.h:* 7 {{candidate function not viable}}
                                     // expected-note@vecintrin.h:* 1 {{must be a constant integer}}
-  vsi = vec_rl_mask(vsi, vui, idx); // expected-error {{no matching function}}
+  vsi = vec_rl_mask(vsi, vui, idx); // expected-error {{no matching function}} \
+                                    // expected-error {{argument to '__builtin_s390_verimb' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimh' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimf' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimg' must be a constant integer}}
                                     // expected-note@vecintrin.h:* 7 {{candidate function not viable}}
                                     // expected-note@vecintrin.h:* 1 {{must be a constant integer}}
-  vui = vec_rl_mask(vui, vui, idx); // expected-error {{no matching function}}
+  vui = vec_rl_mask(vui, vui, idx); // expected-error {{no matching function}} \
+                                    // expected-error {{argument to '__builtin_s390_verimb' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimh' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimf' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimg' must be a constant integer}}
                                     // expected-note@vecintrin.h:* 7 {{candidate function not viable}}
                                     // expected-note@vecintrin.h:* 1 {{must be a constant integer}}
-  vsl = vec_rl_mask(vsl, vul, idx); // expected-error {{no matching function}}
+  vsl = vec_rl_mask(vsl, vul, idx); // expected-error {{no matching function}} \
+                                    // expected-error {{argument to '__builtin_s390_verimb' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimh' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimf' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimg' must be a constant integer}}
                                     // expected-note@vecintrin.h:* 7 {{candidate function not viable}}
                                     // expected-note@vecintrin.h:* 1 {{must be a constant integer}}
-  vul = vec_rl_mask(vul, vul, idx); // expected-error {{no matching function}}
+  vul = vec_rl_mask(vul, vul, idx); // expected-error {{no matching function}} \
+                                    // expected-error {{argument to '__builtin_s390_verimb' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimh' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimf' must be a constant integer}} \
+                                    // expected-error {{argument to '__builtin_s390_verimg' must be a constant integer}}
                                     // expected-note@vecintrin.h:* 7 {{candidate function not viable}}
                                     // expected-note@vecintrin.h:* 1 {{must be a constant integer}}
 
-  vsc = vec_sld(vsc, vsc, idx); // expected-error {{no matching function}}
+  vsc = vec_sld(vsc, vsc, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                 // expected-note@vecintrin.h:* 12 {{candidate function not viable}}
                                 // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 15}}
-  vsc = vec_sld(vsc, vsc, -1);  // expected-error {{no matching function}}
+  vsc = vec_sld(vsc, vsc, -1);  // expected-error {{no matching function}} expected-error {{argument value -1 is outside the valid range [0, 15]}}
                                 // expected-note@vecintrin.h:* 12 {{candidate function not viable}}
                                 // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 15}}
-  vsc = vec_sld(vsc, vsc, 16);  // expected-error {{no matching function}}
+  vsc = vec_sld(vsc, vsc, 16);  // expected-error {{no matching function}} expected-error {{argument value 16 is outside the valid range [0, 15]}}
                                 // expected-note@vecintrin.h:* 12 {{candidate function not viable}}
                                 // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 15}}
-  vuc = vec_sld(vuc, vuc, idx); // expected-error {{no matching function}}
+  vuc = vec_sld(vuc, vuc, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                 // expected-note@vecintrin.h:* 11 {{candidate function not viable}}
                                 // expected-note@vecintrin.h:* 2 {{must be a constant integer from 0 to 15}}
-  vuc = vec_sld(vuc, vuc, -1);  // expected-error {{no matching function}}
+  vuc = vec_sld(vuc, vuc, -1);  // expected-error {{no matching function}} expected-error {{argument value -1 is outside the valid range [0, 15]}}
                                 // expected-note@vecintrin.h:* 11 {{candidate function not viable}}
                                 // expected-note@vecintrin.h:* 2 {{must be a constant integer from 0 to 15}}
-  vuc = vec_sld(vuc, vuc, 16);  // expected-error {{no matching function}}
+  vuc = vec_sld(vuc, vuc, 16);  // expected-error {{no matching function}} expected-error {{argument value 16 is outside the valid range [0, 15]}}
                                 // expected-note@vecintrin.h:* 11 {{candidate function not viable}}
                                 // expected-note@vecintrin.h:* 2 {{must be a constant integer from 0 to 15}}
-  vss = vec_sld(vss, vss, idx); // expected-error {{no matching function}}
+  vss = vec_sld(vss, vss, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                 // expected-note@vecintrin.h:* 12 {{candidate function not viable}}
                                 // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 15}}
-  vus = vec_sld(vus, vus, idx); // expected-error {{no matching function}}
+  vus = vec_sld(vus, vus, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                 // expected-note@vecintrin.h:* 11 {{candidate function not viable}}
                                 // expected-note@vecintrin.h:* 2 {{must be a constant integer from 0 to 15}}
-  vsi = vec_sld(vsi, vsi, idx); // expected-error {{no matching function}}
+  vsi = vec_sld(vsi, vsi, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                 // expected-note@vecintrin.h:* 12 {{candidate function not viable}}
                                 // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 15}}
-  vui = vec_sld(vui, vui, idx); // expected-error {{no matching function}}
+  vui = vec_sld(vui, vui, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                 // expected-note@vecintrin.h:* 11 {{candidate function not viable}}
                                 // expected-note@vecintrin.h:* 2 {{must be a constant integer from 0 to 15}}
-  vsl = vec_sld(vsl, vsl, idx); // expected-error {{no matching function}}
+  vsl = vec_sld(vsl, vsl, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                 // expected-note@vecintrin.h:* 12 {{candidate function not viable}}
                                 // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 15}}
-  vul = vec_sld(vul, vul, idx); // expected-error {{no matching function}}
+  vul = vec_sld(vul, vul, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                 // expected-note@vecintrin.h:* 11 {{candidate function not viable}}
                                 // expected-note@vecintrin.h:* 2 {{must be a constant integer from 0 to 15}}
-  vd = vec_sld(vd, vd, idx);    // expected-error {{no matching function}}
+  vd = vec_sld(vd, vd, idx);    // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                 // expected-note@vecintrin.h:* 12 {{candidate function not viable}}
                                 // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 15}}
 
-  vsc = vec_sldw(vsc, vsc, idx); // expected-error {{no matching function}}
+  vsc = vec_sldw(vsc, vsc, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 8 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
-  vsc = vec_sldw(vsc, vsc, -1);  // expected-error {{no matching function}}
+  vsc = vec_sldw(vsc, vsc, -1);  // expected-error {{no matching function}} expected-error {{argument value -4 is outside the valid range [0, 15]}}
                                  // expected-note@vecintrin.h:* 8 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
-  vsc = vec_sldw(vsc, vsc, 4);   // expected-error {{no matching function}}
+  vsc = vec_sldw(vsc, vsc, 4);   // expected-error {{no matching function}} expected-error {{argument value 16 is outside the valid range [0, 15]}}
                                  // expected-note@vecintrin.h:* 8 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
-  vuc = vec_sldw(vuc, vuc, idx); // expected-error {{no matching function}}
+  vuc = vec_sldw(vuc, vuc, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 8 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
-  vuc = vec_sldw(vuc, vuc, -1);  // expected-error {{no matching function}}
+  vuc = vec_sldw(vuc, vuc, -1);  // expected-error {{no matching function}} expected-error {{argument value -4 is outside the valid range [0, 15]}}
                                  // expected-note@vecintrin.h:* 8 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
-  vuc = vec_sldw(vuc, vuc, 4);   // expected-error {{no matching function}}
+  vuc = vec_sldw(vuc, vuc, 4);   // expected-error {{no matching function}} expected-error {{argument value 16 is outside the valid range [0, 15]}}
                                  // expected-note@vecintrin.h:* 8 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
-  vss = vec_sldw(vss, vss, idx); // expected-error {{no matching function}}
+  vss = vec_sldw(vss, vss, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 8 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
-  vus = vec_sldw(vus, vus, idx); // expected-error {{no matching function}}
+  vus = vec_sldw(vus, vus, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 8 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
-  vsi = vec_sldw(vsi, vsi, idx); // expected-error {{no matching function}}
+  vsi = vec_sldw(vsi, vsi, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 8 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
-  vui = vec_sldw(vui, vui, idx); // expected-error {{no matching function}}
+  vui = vec_sldw(vui, vui, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 8 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
-  vsl = vec_sldw(vsl, vsl, idx); // expected-error {{no matching function}}
+  vsl = vec_sldw(vsl, vsl, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 8 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
-  vul = vec_sldw(vul, vul, idx); // expected-error {{no matching function}}
+  vul = vec_sldw(vul, vul, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 8 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
-  vd = vec_sldw(vd, vd, idx);    // expected-error {{no matching function}}
+  vd = vec_sldw(vd, vd, idx);    // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 8 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 3}}
 }
 
 void test_float(void) {
   vd = vec_ctd(vsl, idx); // expected-error {{no matching function}}
                           // expected-note@vecintrin.h:* 1 {{candidate function not viable}}
                           // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 31}}

clang/test/CodeGen/builtins-systemz-zvector2-error.c

vd = vec_splat(vd, -1);    // expected-error {{no matching function}}
                              // expected-note@vecintrin.h:* 13 {{candidate function not viable}}
                              // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 1}}
   vd = vec_splat(vd, 2);     // expected-error {{no matching function}}
                              // expected-note@vecintrin.h:* 13 {{candidate function not viable}}
                              // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 1}}
 }
 
 void test_integer(void) {
-  vf = vec_sld(vf, vf, idx);    // expected-error {{no matching function}}
-                                // expected-note@vecintrin.h:* 13 {{candidate function not viable}}
-                                // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 15}}
-  vd = vec_sld(vd, vd, idx);    // expected-error {{no matching function}}
-                                // expected-note@vecintrin.h:* 13 {{candidate function not viable}}
-                                // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 15}}
+  vf = vec_sld(vf, vf, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
+  vd = vec_sld(vd, vd, idx); // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vsldb' must be a constant integer}}
 
   vuc = vec_msum_u128(vul, vul, vuc, idx);  // expected-error {{must be a constant integer}}
   vuc = vec_msum_u128(vul, vul, vuc, -1);   // expected-error-re {{argument value {{.*}} is outside the valid range}}
   vuc = vec_msum_u128(vul, vul, vuc, 16);   // expected-error-re {{argument value {{.*}} is outside the valid range}}
 }
 
 void test_float(void) {
-  vbi = vec_fp_test_data_class(vf, idx, &cc);   // expected-error {{no matching function}}
-                                                // expected-note@vecintrin.h:* 1 {{candidate function not viable}}
-                                                // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 4095}}
-  vbi = vec_fp_test_data_class(vf, -1, &cc);    // expected-error {{no matching function}}
-                                                // expected-note@vecintrin.h:* 1 {{candidate function not viable}}
-                                                // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 4095}}
-  vbi = vec_fp_test_data_class(vf, 4096, &cc);  // expected-error {{no matching function}}
-                                                // expected-note@vecintrin.h:* 1 {{candidate function not viable}}
-                                                // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 4095}}
-  vbl = vec_fp_test_data_class(vd, idx, &cc);   // expected-error {{no matching function}}
-                                                // expected-note@vecintrin.h:* 1 {{candidate function not viable}}
-                                                // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 4095}}
-  vbl = vec_fp_test_data_class(vd, -1, &cc);    // expected-error {{no matching function}}
-                                                // expected-note@vecintrin.h:* 1 {{candidate function not viable}}
-                                                // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 4095}}
-  vbl = vec_fp_test_data_class(vd, 4096, &cc);  // expected-error {{no matching function}}
-                                                // expected-note@vecintrin.h:* 1 {{candidate function not viable}}
-                                                // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 4095}}
+  vbi = vec_fp_test_data_class(vf, idx, &cc);  // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vftcisb' must be a constant integer}} expected-error {{argument to '__builtin_s390_vftcidb' must be a constant integer}}
+  vbi = vec_fp_test_data_class(vf, -1, &cc);   // expected-error {{no matching function}} expected-error 2{{argument value -1 is outside the valid range [0, 4095]}}
+  vbi = vec_fp_test_data_class(vf, 4096, &cc); // expected-error {{no matching function}} expected-error 2{{argument value 4096 is outside the valid range [0, 4095]}}
+  vbl = vec_fp_test_data_class(vd, idx, &cc);  // expected-error {{no matching function}} expected-error {{argument to '__builtin_s390_vftcisb' must be a constant integer}} expected-error {{argument to '__builtin_s390_vftcidb' must be a constant integer}}
+  vbl = vec_fp_test_data_class(vd, -1, &cc);   // expected-error {{no matching function}} expected-error 2{{argument value -1 is outside the valid range [0, 4095]}}
+  vbl = vec_fp_test_data_class(vd, 4096, &cc); // expected-error {{no matching function}} expected-error 2{{argument value 4096 is outside the valid range [0, 4095]}}
 }

clang/test/CodeGen/builtins-systemz-zvector3-error.c

 float * volatile ptrf;
 double * volatile ptrd;
 
 volatile unsigned int len;
 volatile int idx;
 int cc;
 
 void test_integer(void) {
-  vsc = vec_sldb(vsc, vsc, idx); // expected-error {{no matching function}}
+  vsc = vec_sldb(vsc, vsc, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsld' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vuc = vec_sldb(vuc, vuc, idx); // expected-error {{no matching function}}
+  vuc = vec_sldb(vuc, vuc, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsld' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vss = vec_sldb(vss, vss, idx); // expected-error {{no matching function}}
+  vss = vec_sldb(vss, vss, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsld' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vus = vec_sldb(vus, vus, idx); // expected-error {{no matching function}}
+  vus = vec_sldb(vus, vus, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsld' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vsi = vec_sldb(vsi, vsi, idx); // expected-error {{no matching function}}
+  vsi = vec_sldb(vsi, vsi, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsld' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vui = vec_sldb(vui, vui, idx); // expected-error {{no matching function}}
+  vui = vec_sldb(vui, vui, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsld' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vsl = vec_sldb(vsl, vsl, idx); // expected-error {{no matching function}}
+  vsl = vec_sldb(vsl, vsl, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsld' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vul = vec_sldb(vul, vul, idx); // expected-error {{no matching function}}
+  vul = vec_sldb(vul, vul, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsld' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vf = vec_sldb(vf, vf, idx);    // expected-error {{no matching function}}
+  vf = vec_sldb(vf, vf, idx);    // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsld' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vd = vec_sldb(vd, vd, idx);    // expected-error {{no matching function}}
+  vd = vec_sldb(vd, vd, idx);    // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsld' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
 
-  vsc = vec_srdb(vsc, vsc, idx); // expected-error {{no matching function}}
+  vsc = vec_srdb(vsc, vsc, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsrd' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vuc = vec_srdb(vuc, vuc, idx); // expected-error {{no matching function}}
+  vuc = vec_srdb(vuc, vuc, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsrd' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vss = vec_srdb(vss, vss, idx); // expected-error {{no matching function}}
+  vss = vec_srdb(vss, vss, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsrd' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vus = vec_srdb(vus, vus, idx); // expected-error {{no matching function}}
+  vus = vec_srdb(vus, vus, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsrd' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vsi = vec_srdb(vsi, vsi, idx); // expected-error {{no matching function}}
+  vsi = vec_srdb(vsi, vsi, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsrd' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vui = vec_srdb(vui, vui, idx); // expected-error {{no matching function}}
+  vui = vec_srdb(vui, vui, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsrd' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vsl = vec_srdb(vsl, vsl, idx); // expected-error {{no matching function}}
+  vsl = vec_srdb(vsl, vsl, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsrd' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vul = vec_srdb(vul, vul, idx); // expected-error {{no matching function}}
+  vul = vec_srdb(vul, vul, idx); // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsrd' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vf = vec_srdb(vf, vf, idx);    // expected-error {{no matching function}}
+  vf = vec_srdb(vf, vf, idx);    // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsrd' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
-  vd = vec_srdb(vd, vd, idx);    // expected-error {{no matching function}}
+  vd = vec_srdb(vd, vd, idx);    // expected-error {{no matching function}} \
+                                 // expected-error {{argument to '__builtin_s390_vsrd' must be a constant integer}}
                                  // expected-note@vecintrin.h:* 9 {{candidate function not viable}}
                                  // expected-note@vecintrin.h:* 1 {{must be a constant integer from 0 to 7}}
 }
-

clang/test/Index/complete-switch.c

 void f() {
   auto foo = bar;
   switch(foo) {
     case x:
       break;
   }
 }
 
-// RUN: not %clang_cc1 -fsyntax-only -code-completion-at=%s:4:10 %s | FileCheck %s -allow-empty
+// RUN: not %clang_cc1 -fsyntax-only -Xclang -fno-recovery-ast -code-completion-at=%s:4:10 %s | FileCheck %s -allow-empty
 // CHECK-NOT: COMPLETION: foo

clang/test/OpenMP/begin_declare_variant_messages.c

 #pragma omp begin declare variant match(device={kind}) // expected-warning {{the context selector 'kind' in context set 'device' requires a context property defined in parentheses; selector ignored}} expected-note {{the ignored selector spans until here}}
 #pragma omp end declare variant
 #pragma omp begin declare variant match(device={kind(}) // expected-error {{expected ')'}} expected-warning {{expected identifier or string literal describing a context property; property skipped}} expected-note {{context property options are: 'host' 'nohost' 'cpu' 'gpu' 'fpga' 'any'}} expected-note {{to match this '('}}
 #pragma omp end declare variant
 #pragma omp begin declare variant match(device={kind()}) // expected-warning {{expected identifier or string literal describing a context property; property skipped}} expected-note {{context property options are: 'host' 'nohost' 'cpu' 'gpu' 'fpga' 'any'}}
 #pragma omp end declare variant
 #pragma omp begin declare variant match(device={kind(score cpu)}) // expected-error {{expected '(' after 'score'}} expected-warning {{expected '':'' after the score expression; '':'' assumed}} expected-warning {{the context selector 'kind' in the context set 'device' cannot have a score ('<invalid>'); score ignored}}
 #pragma omp end declare variant
-#pragma omp begin declare variant match(device={kind(score( ibm)}) // expected-error {{use of undeclared identifier 'ibm'}} expected-error {{expected ')'}} expected-warning {{expected '':'' after the score expression; '':'' assumed}} expected-warning {{the context selector 'kind' in the context set 'device' cannot have a score ('<invalid>'); score ignored}} expected-warning {{expected identifier or string literal describing a context property; property skipped}} expected-note {{context property options are: 'host' 'nohost' 'cpu' 'gpu' 'fpga' 'any'}} expected-note {{to match this '('}}
+#pragma omp begin declare variant match(device = {kind(score(ibm) }) // expected-error {{use of undeclared identifier 'ibm'}} expected-error {{expected ')'}} expected-warning {{expected '':'' after the score expression; '':'' assumed}} expected-warning {{the context selector 'kind' in the context set 'device' cannot have a score ('<recovery-expr>()'); score ignored}} expected-warning {{expected identifier or string literal describing a context property; property skipped}} expected-note {{context property options are: 'host' 'nohost' 'cpu' 'gpu' 'fpga' 'any'}} expected-note {{to match this '('}}
 #pragma omp end declare variant
 #pragma omp begin declare variant match(device={kind(score(2 gpu)}) // expected-error {{expected ')'}} expected-error {{expected ')'}} expected-warning {{expected '':'' after the score expression; '':'' assumed}} expected-warning {{the context selector 'kind' in the context set 'device' cannot have a score ('2'); score ignored}} expected-warning {{expected identifier or string literal describing a context property; property skipped}} expected-note {{to match this '('}} expected-note {{context property options are: 'host' 'nohost' 'cpu' 'gpu' 'fpga' 'any'}} expected-note {{to match this '('}}
 #pragma omp end declare variant
 #pragma omp begin declare variant match(device={kind(score(foo()) ibm)}) // expected-warning {{expected '':'' after the score expression; '':'' assumed}} expected-warning {{the context selector 'kind' in the context set 'device' cannot have a score ('foo()'); score ignored}} expected-warning {{'ibm' is not a valid context property for the context selector 'kind' and the context set 'device'; property ignored}} expected-note {{try 'match(implementation={vendor(ibm)})'}} expected-note {{the ignored property spans until here}}
 #pragma omp end declare variant
 #pragma omp begin declare variant match(device={kind(score(5): host), kind(llvm)}) // expected-warning {{the context selector 'kind' in the context set 'device' cannot have a score ('5'); score ignored}} expected-warning {{the context selector 'kind' was used already in the same 'omp declare variant' directive; selector ignored}} expected-note {{the previous context selector 'kind' used here}} expected-note {{the ignored selector spans until here}}
 #pragma omp end declare variant
 #pragma omp begin declare variant match(device={kind(score(5): nohost), vendor(llvm)}) // expected-warning {{the context selector 'kind' in the context set 'device' cannot have a score ('5'); score ignored}} expected-warning {{the context selector 'vendor' is not valid for the context set 'device'; selector ignored}} expected-note {{the context selector 'vendor' can be nested in the context set 'implementation'; try 'match(implementation={vendor(property)})'}} expected-note {{the ignored selector spans until here}}

clang/test/OpenMP/declare_variant_messages.c

 // RUN: %clang_cc1 -triple=x86_64-pc-win32 -verify -fopenmp -x c -std=c99 -fms-extensions -Wno-pragma-pack %s
 
 // RUN: %clang_cc1 -triple=x86_64-pc-win32 -verify -fopenmp-simd -x c -std=c99 -fms-extensions -Wno-pragma-pack %s
 
 
 #pragma omp declare // expected-error {{expected an OpenMP directive}}
 
 int foo(void);
 
 #pragma omp declare variant // expected-error {{expected '(' after 'declare variant'}}
 #pragma omp declare variant( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
 #pragma omp declare variant(foo // expected-error {{expected ')'}} expected-error {{expected 'match' clause on 'omp declare variant' directive}} expected-note {{to match this '('}}
-#pragma omp declare variant(x) // expected-error {{use of undeclared identifier 'x'}}
+#pragma omp declare variant(x) // expected-error {{use of undeclared identifier 'x'}} expected-error {{expected 'match' clause on}}
 #pragma omp declare variant(foo) // expected-error {{expected 'match' clause on 'omp declare variant' directive}}
 #pragma omp declare variant(foo) // expected-error {{expected 'match' clause on 'omp declare variant' directive}}
 #pragma omp declare variant(foo) xxx // expected-error {{expected 'match' clause on 'omp declare variant' directive}}
 #pragma omp declare variant(foo) match // expected-error {{expected '(' after 'match'}}
 #pragma omp declare variant(foo) match( // expected-error {{expected ')'}} expected-warning {{expected identifier or string literal describing a context set; set skipped}} expected-note {{context set options are: 'construct' 'device' 'implementation' 'user'}} expected-note {{the ignored set spans until here}} expected-note {{to match this '('}}
 #pragma omp declare variant(foo) match() // expected-warning {{expected identifier or string literal describing a context set; set skipped}} expected-note {{context set options are: 'construct' 'device' 'implementation' 'user'}} expected-note {{the ignored set spans until here}}
 #pragma omp declare variant(foo) match(xxx) // expected-warning {{'xxx' is not a valid context set in a `declare variant`; set ignored}} expected-note {{context set options are: 'construct' 'device' 'implementation' 'user'}} expected-note {{the ignored set spans until here}}
 #pragma omp declare variant(foo) match(xxx=) // expected-warning {{'xxx' is not a valid context set in a `declare variant`; set ignored}} expected-note {{context set options are: 'construct' 'device' 'implementation' 'user'}} expected-note {{the ignored set spans until here}}

 #pragma omp declare variant(foo) match(implementation={vendor(score(foo()) ibm)}) // expected-warning {{expected '':'' after the score expression; '':'' assumed}} expected-warning {{score expressions in the OpenMP context selector need to be constant; foo() is not and will be ignored}}
 #pragma omp declare variant(foo) match(implementation={vendor(score(5): ibm), vendor(llvm)}) // expected-warning {{the context selector 'vendor' was used already in the same 'omp declare variant' directive; selector ignored}} expected-note {{the previous context selector 'vendor' used here}} expected-note {{the ignored selector spans until here}}
 #pragma omp declare variant(foo) match(implementation={vendor(score(5): ibm), kind(cpu)}) // expected-warning {{the context selector 'kind' is not valid for the context set 'implementation'; selector ignored}} expected-note {{the context selector 'kind' can be nested in the context set 'device'; try 'match(device={kind(property)})'}} expected-note {{the ignored selector spans until here}}
 #pragma omp declare variant(foo) match(device={xxx}) // expected-warning {{'xxx' is not a valid context selector for the context set 'device'; selector ignored}} expected-note {{context selector options are: 'kind' 'isa' 'arch'}} expected-note {{the ignored selector spans until here}}
 #pragma omp declare variant(foo) match(device={kind}) // expected-warning {{the context selector 'kind' in context set 'device' requires a context property defined in parentheses; selector ignored}} expected-note {{the ignored selector spans until here}}
 #pragma omp declare variant(foo) match(device={kind(}) // expected-error {{expected ')'}} expected-warning {{expected identifier or string literal describing a context property; property skipped}} expected-note {{context property options are: 'host' 'nohost' 'cpu' 'gpu' 'fpga' 'any'}} expected-note {{to match this '('}}
 #pragma omp declare variant(foo) match(device={kind()}) // expected-warning {{expected identifier or string literal describing a context property; property skipped}} expected-note {{context property options are: 'host' 'nohost' 'cpu' 'gpu' 'fpga' 'any'}}
 #pragma omp declare variant(foo) match(device={kind(score cpu)}) // expected-error {{expected '(' after 'score'}} expected-warning {{expected '':'' after the score expression; '':'' assumed}} expected-warning {{the context selector 'kind' in the context set 'device' cannot have a score ('<invalid>'); score ignored}}
-#pragma omp declare variant(foo) match(device={kind(score( ibm)}) // expected-error {{use of undeclared identifier 'ibm'}} expected-error {{expected ')'}} expected-warning {{expected '':'' after the score expression; '':'' assumed}} expected-warning {{the context selector 'kind' in the context set 'device' cannot have a score ('<invalid>'); score ignored}} expected-warning {{expected identifier or string literal describing a context property; property skipped}} expected-note {{context property options are: 'host' 'nohost' 'cpu' 'gpu' 'fpga' 'any'}} expected-note {{to match this '('}}
+#pragma omp declare variant(foo) match(device = {kind(score(ibm) }) // expected-error {{use of undeclared identifier 'ibm'}} expected-error {{expected ')'}} expected-warning {{expected '':'' after the score expression; '':'' assumed}} expected-warning {{the context selector 'kind' in the context set 'device' cannot have a score ('<recovery-expr>()'); score ignored}} expected-warning {{expected identifier or string literal describing a context property; property skipped}} expected-note {{context property options are: 'host' 'nohost' 'cpu' 'gpu' 'fpga' 'any'}} expected-note {{to match this '('}}
 #pragma omp declare variant(foo) match(device={kind(score(2 gpu)}) // expected-error {{expected ')'}} expected-error {{expected ')'}} expected-warning {{expected '':'' after the score expression; '':'' assumed}} expected-warning {{the context selector 'kind' in the context set 'device' cannot have a score ('2'); score ignored}} expected-warning {{expected identifier or string literal describing a context property; property skipped}} expected-note {{to match this '('}} expected-note {{context property options are: 'host' 'nohost' 'cpu' 'gpu' 'fpga' 'any'}} expected-note {{to match this '('}}
 #pragma omp declare variant(foo) match(device={kind(score(foo()) ibm)}) // expected-warning {{expected '':'' after the score expression; '':'' assumed}} expected-warning {{the context selector 'kind' in the context set 'device' cannot have a score ('foo()'); score ignored}} expected-warning {{'ibm' is not a valid context property for the context selector 'kind' and the context set 'device'; property ignored}} expected-note {{try 'match(implementation={vendor(ibm)})'}} expected-note {{the ignored property spans until here}}
 #pragma omp declare variant(foo) match(device={kind(score(5): host), kind(llvm)}) // expected-warning {{the context selector 'kind' in the context set 'device' cannot have a score ('5'); score ignored}} expected-warning {{the context selector 'kind' was used already in the same 'omp declare variant' directive; selector ignored}} expected-note {{the previous context selector 'kind' used here}} expected-note {{the ignored selector spans until here}}
 #pragma omp declare variant(foo) match(device={kind(score(5): nohost), vendor(llvm)}) // expected-warning {{the context selector 'kind' in the context set 'device' cannot have a score ('5'); score ignored}} expected-warning {{the context selector 'vendor' is not valid for the context set 'device'; selector ignored}} expected-note {{the context selector 'vendor' can be nested in the context set 'implementation'; try 'match(implementation={vendor(property)})'}} expected-note {{the ignored selector spans until here}}
 #pragma omp declare variant(foo) match(implementation={extension("aaa")}) // expected-warning {{'aaa' is not a valid context property for the context selector 'extension' and the context set 'implementation'; property ignored}} expected-note {{context property options are: 'match_all' 'match_any' 'match_none'}} expected-note {{the ignored property spans until here}}
 int bar(void);
 
 #pragma omp declare variant(foo) match(implementation = {vendor(score(foo) :llvm)}) // expected-warning {{score expressions in the OpenMP context selector need to be constant; foo is not and will be ignored}}

clang/test/Parser/objc-foreach-syntax.m

 MyList * el; 
      for (el in @"foo") 
     { LOOP(); }
 }
 @end
 
 
 static int test7(id keys) {
-  for (id key; in keys) ;  // expected-error {{use of undeclared identifier 'in'}}
+  // FIXME: would be nice to suppress the secondary diagnostics.
+  for (id key; in keys) ;  // expected-error {{use of undeclared identifier 'in'}} \
+                           // expected-error {{expected ';' in 'for' statement specifier}} \
+                           // expected-warning {{expression result unused}}
 }

clang/test/Sema/__try.c

 
 void TEST() {
   __try {
 
   }
 }  // expected-error{{expected '__except' or '__finally' block}}
 
 void TEST() {
-  __except ( FilterExpression() ) { // expected-warning{{implicit declaration of function '__except' is invalid in C99}} \
-    // expected-error{{too few arguments to function call, expected 1, have 0}}
-
+  __except (FilterExpression()) { // expected-warning{{implicit declaration of function '__except' is invalid in C99}} \
+    // expected-error{{too few arguments to function call, expected 1, have 0}} \
+    // expected-error{{expected ';' after expression}}
   }
 }
 
 void TEST() {
   __finally { } // expected-error{{}}
 }
 
 void TEST() {

clang/test/Sema/enum.c

 
 // PR4515
 enum PR4515 {PR4515a=1u,PR4515b=(PR4515a-2)/2};
 int CheckPR4515[PR4515b==0?1:-1];
 
 // PR7911
 extern enum PR7911T PR7911V; // expected-warning{{ISO C forbids forward references to 'enum' types}}
 void PR7911F() {
-  switch (PR7911V); // expected-error {{statement requires expression of integer type}}
+  switch (PR7911V); // expected-error {{statement requires expression of integer type}} \
+                    // expected-warning {{switch statement has empty body}} expected-note {{put the semicolon on a separate line to silence this warning}}
 }
 
 char test5[__has_feature(enumerator_attributes) ? 1 : -1];
 
 // PR8694
 // rdar://8707031
 void PR8694(int* e) // expected-note {{passing argument to parameter 'e' here}}
 {

clang/test/Sema/typo-correction.c

 // RUN: %clang_cc1 -fsyntax-only -verify %s
 //
 // This file contains typo correction tests which hit different code paths in C
 // than in C++ and may exhibit different behavior as a result.
 
 __typeof__(struct F*) var[invalid];  // expected-error-re {{use of undeclared identifier 'invalid'{{$}}}}
 
 void PR21656() {
   float x;
   x = (float)arst;  // expected-error-re {{use of undeclared identifier 'arst'{{$}}}}
 }
 
 a = b ? : 0;  // expected-warning {{type specifier missing, defaults to 'int'}} \
               // expected-error {{use of undeclared identifier 'b'}}
 
 int foobar;  // expected-note {{'foobar' declared here}}
-a = goobar ?: 4;  // expected-warning {{type specifier missing, defaults to 'int'}} \
+new_a = goobar ?: 4; // expected-warning {{type specifier missing, defaults to 'int'}} \
                       // expected-error {{use of undeclared identifier 'goobar'; did you mean 'foobar'?}} \
                       // expected-error {{initializer element is not a compile-time constant}}
 
 struct ContainerStuct {
   enum { SOME_ENUM }; // expected-note {{'SOME_ENUM' declared here}}
 };
 
 void func(int arg) {
   switch (arg) {
   case SOME_ENUM_: // expected-error {{use of undeclared identifier 'SOME_ENUM_'; did you mean 'SOME_ENUM'}}
void f(long *a, long b) {
       __atomic_or_fetch(a, b, c);  // expected-error {{use of undeclared identifier 'c'}}
 }
 
 extern double cabs(_Complex double z);
 void fn1() {
   cabs(errij);  // expected-error {{use of undeclared identifier 'errij'}}
 }
 
-extern long afunction(int); // expected-note {{'afunction' declared here}}
+extern long afunction(int);
 void fn2() {
-  f(THIS_IS_AN_ERROR, // expected-error {{use of undeclared identifier 'THIS_IS_AN_ERROR'}}
-    afunction(afunction_));  // expected-error {{use of undeclared identifier 'afunction_'; did you mean 'afunction'?}}
+  f(THIS_IS_AN_ERROR,       // expected-error {{use of undeclared identifier 'THIS_IS_AN_ERROR'}}
+    afunction(afunction_)); // expected-error {{use of undeclared identifier 'afunction_'}}
 }
 
 int d = X ? d : L; // expected-error 2 {{use of undeclared identifier}}
 
 int fn_with_ids() { ID = ID == ID >= ID ; } // expected-error 4 {{use of undeclared identifier}}
 
 int fn_with_rs(int r) { r = TYPO + r * TYPO; } // expected-error 2 {{use of undeclared identifier}}