Index: llvm/lib/Analysis/TargetLibraryInfo.cpp =================================================================== --- llvm/lib/Analysis/TargetLibraryInfo.cpp +++ llvm/lib/Analysis/TargetLibraryInfo.cpp @@ -414,6 +414,65 @@ TLI.setUnavailable(LibFunc_utimes); } + // Pick just one set of new/delete variants. + if (T.isOSMSVCRT()) { + // MSVC, doesn't have the Itanium new/delete. + TLI.setUnavailable(LibFunc_ZdaPv); + TLI.setUnavailable(LibFunc_ZdaPvRKSt9nothrow_t); + TLI.setUnavailable(LibFunc_ZdaPvSt11align_val_t); + TLI.setUnavailable(LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t); + TLI.setUnavailable(LibFunc_ZdaPvj); + TLI.setUnavailable(LibFunc_ZdaPvjSt11align_val_t); + TLI.setUnavailable(LibFunc_ZdaPvm); + TLI.setUnavailable(LibFunc_ZdaPvmSt11align_val_t); + TLI.setUnavailable(LibFunc_ZdlPv); + TLI.setUnavailable(LibFunc_ZdlPvRKSt9nothrow_t); + TLI.setUnavailable(LibFunc_ZdlPvSt11align_val_t); + TLI.setUnavailable(LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t); + TLI.setUnavailable(LibFunc_ZdlPvj); + TLI.setUnavailable(LibFunc_ZdlPvjSt11align_val_t); + TLI.setUnavailable(LibFunc_ZdlPvm); + TLI.setUnavailable(LibFunc_ZdlPvmSt11align_val_t); + TLI.setUnavailable(LibFunc_Znaj); + TLI.setUnavailable(LibFunc_ZnajRKSt9nothrow_t); + TLI.setUnavailable(LibFunc_ZnajSt11align_val_t); + TLI.setUnavailable(LibFunc_ZnajSt11align_val_tRKSt9nothrow_t); + TLI.setUnavailable(LibFunc_Znam); + TLI.setUnavailable(LibFunc_ZnamRKSt9nothrow_t); + TLI.setUnavailable(LibFunc_ZnamSt11align_val_t); + TLI.setUnavailable(LibFunc_ZnamSt11align_val_tRKSt9nothrow_t); + TLI.setUnavailable(LibFunc_Znwj); + TLI.setUnavailable(LibFunc_ZnwjRKSt9nothrow_t); + TLI.setUnavailable(LibFunc_ZnwjSt11align_val_t); + TLI.setUnavailable(LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t); + TLI.setUnavailable(LibFunc_Znwm); + TLI.setUnavailable(LibFunc_ZnwmRKSt9nothrow_t); + TLI.setUnavailable(LibFunc_ZnwmSt11align_val_t); + TLI.setUnavailable(LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t); + } else { + // Not MSVC, assume it's Itanium. + TLI.setUnavailable(LibFunc_msvc_new_int); + TLI.setUnavailable(LibFunc_msvc_new_int_nothrow); + TLI.setUnavailable(LibFunc_msvc_new_longlong); + TLI.setUnavailable(LibFunc_msvc_new_longlong_nothrow); + TLI.setUnavailable(LibFunc_msvc_delete_ptr32); + TLI.setUnavailable(LibFunc_msvc_delete_ptr32_nothrow); + TLI.setUnavailable(LibFunc_msvc_delete_ptr32_int); + TLI.setUnavailable(LibFunc_msvc_delete_ptr64); + TLI.setUnavailable(LibFunc_msvc_delete_ptr64_nothrow); + TLI.setUnavailable(LibFunc_msvc_delete_ptr64_longlong); + TLI.setUnavailable(LibFunc_msvc_new_array_int); + TLI.setUnavailable(LibFunc_msvc_new_array_int_nothrow); + TLI.setUnavailable(LibFunc_msvc_new_array_longlong); + TLI.setUnavailable(LibFunc_msvc_new_array_longlong_nothrow); + TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32); + TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32_nothrow); + TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32_int); + TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64); + TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64_nothrow); + TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64_longlong); + } + switch (T.getOS()) { case Triple::MacOSX: // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0 Index: llvm/test/Transforms/InstCombine/malloc-free-delete.ll =================================================================== --- llvm/test/Transforms/InstCombine/malloc-free-delete.ll +++ /dev/null @@ -1,451 +0,0 @@ -; NOTE: Assertions have been autogenerated by utils/update_test_checks.py -; RUN: opt < %s -instcombine -S | FileCheck %s -; PR1201 -define i32 @main(i32 %argc, i8** %argv) { -; CHECK-LABEL: @main( -; CHECK-NEXT: ret i32 0 -; - %c_19 = alloca i8* - %malloc_206 = tail call i8* @malloc(i32 mul (i32 ptrtoint (i8* getelementptr (i8, i8* null, i32 1) to i32), i32 10)) - store i8* %malloc_206, i8** %c_19 - %tmp_207 = load i8*, i8** %c_19 - tail call void @free(i8* %tmp_207) - ret i32 0 -} - -define i32 @dead_aligned_alloc(i32 %size, i32 %alignment, i8 %value) { -; CHECK-LABEL: @dead_aligned_alloc( -; CHECK-NEXT: ret i32 0 -; - %aligned_allocation = tail call i8* @aligned_alloc(i32 %alignment, i32 %size) - store i8 %value, i8* %aligned_allocation - tail call void @free(i8* %aligned_allocation) - ret i32 0 -} - -declare noalias i8* @calloc(i32, i32) nounwind -declare noalias i8* @malloc(i32) -declare noalias i8* @aligned_alloc(i32, i32) -declare void @free(i8*) - -define i1 @foo() { -; CHECK-LABEL: @foo( -; CHECK-NEXT: ret i1 false -; - %m = call i8* @malloc(i32 1) - %z = icmp eq i8* %m, null - call void @free(i8* %m) - ret i1 %z -} - -declare void @llvm.lifetime.start.p0i8(i64, i8*) -declare void @llvm.lifetime.end.p0i8(i64, i8*) -declare i64 @llvm.objectsize.i64(i8*, i1) -declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i1) nounwind -declare void @llvm.memmove.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i1) nounwind -declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i1) nounwind - -define void @test3(i8* %src) { -; CHECK-LABEL: @test3( -; CHECK-NEXT: ret void -; - %a = call noalias i8* @malloc(i32 10) - call void @llvm.lifetime.start.p0i8(i64 10, i8* %a) - call void @llvm.lifetime.end.p0i8(i64 10, i8* %a) - %size = call i64 @llvm.objectsize.i64(i8* %a, i1 true) - store i8 42, i8* %a - call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a, i8* %src, i32 32, i1 false) - call void @llvm.memmove.p0i8.p0i8.i32(i8* %a, i8* %src, i32 32, i1 false) - call void @llvm.memset.p0i8.i32(i8* %a, i8 5, i32 32, i1 false) - %alloc2 = call noalias i8* @calloc(i32 5, i32 7) nounwind - %z = icmp ne i8* %alloc2, null - ret void -} - -;; This used to crash. -define void @test4() { -; CHECK-LABEL: @test4( -; CHECK-NEXT: ret void -; - %A = call i8* @malloc(i32 16000) - %B = bitcast i8* %A to double* - %C = bitcast double* %B to i8* - call void @free(i8* %C) - ret void -} - -define void @test5(i8* %ptr, i8** %esc) { -; CHECK-LABEL: @test5( -; CHECK-NEXT: [[A:%.*]] = call dereferenceable_or_null(700) i8* @malloc(i32 700) -; CHECK-NEXT: [[B:%.*]] = call dereferenceable_or_null(700) i8* @malloc(i32 700) -; CHECK-NEXT: [[C:%.*]] = call dereferenceable_or_null(700) i8* @malloc(i32 700) -; CHECK-NEXT: [[D:%.*]] = call dereferenceable_or_null(700) i8* @malloc(i32 700) -; CHECK-NEXT: [[E:%.*]] = call dereferenceable_or_null(700) i8* @malloc(i32 700) -; CHECK-NEXT: [[F:%.*]] = call dereferenceable_or_null(700) i8* @malloc(i32 700) -; CHECK-NEXT: [[G:%.*]] = call dereferenceable_or_null(700) i8* @malloc(i32 700) -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* noundef nonnull align 1 dereferenceable(32) [[PTR:%.*]], i8* noundef nonnull align 1 dereferenceable(32) [[A]], i32 32, i1 false) -; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* noundef nonnull align 1 dereferenceable(32) [[PTR]], i8* noundef nonnull align 1 dereferenceable(32) [[B]], i32 32, i1 false) -; CHECK-NEXT: store i8* [[C]], i8** [[ESC:%.*]], align 8 -; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[D]], i8* [[PTR]], i32 32, i1 true) -; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* [[E]], i8* [[PTR]], i32 32, i1 true) -; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* [[F]], i8 5, i32 32, i1 true) -; CHECK-NEXT: store volatile i8 4, i8* [[G]], align 1 -; CHECK-NEXT: ret void -; - %a = call i8* @malloc(i32 700) - %b = call i8* @malloc(i32 700) - %c = call i8* @malloc(i32 700) - %d = call i8* @malloc(i32 700) - %e = call i8* @malloc(i32 700) - %f = call i8* @malloc(i32 700) - %g = call i8* @malloc(i32 700) - call void @llvm.memcpy.p0i8.p0i8.i32(i8* %ptr, i8* %a, i32 32, i1 false) - call void @llvm.memmove.p0i8.p0i8.i32(i8* %ptr, i8* %b, i32 32, i1 false) - store i8* %c, i8** %esc - call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %ptr, i32 32, i1 true) - call void @llvm.memmove.p0i8.p0i8.i32(i8* %e, i8* %ptr, i32 32, i1 true) - call void @llvm.memset.p0i8.i32(i8* %f, i8 5, i32 32, i1 true) - store volatile i8 4, i8* %g - ret void -} - -;; When a basic block contains only a call to free and this block is accessed -;; through a test of the argument of free against null, move the call in the -;; predecessor block. -;; Using simplifycfg will remove the empty basic block and the branch operation -;; Then, performing a dead elimination will remove the comparison. -;; This is what happens with -O1 and upper. -define void @test6(i8* %foo) minsize { -; CHECK-LABEL: @test6( -; CHECK-NEXT: entry: -; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i8* [[FOO:%.*]], null -; CHECK-NEXT: tail call void @free(i8* [[FOO]]) -; CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]] -; CHECK: if.then: -; CHECK-NEXT: br label [[IF_END]] -; CHECK: if.end: -; CHECK-NEXT: ret void -; -;; Call to free moved -;; Block is now empty and may be simplified by simplifycfg -entry: - %tobool = icmp eq i8* %foo, null - br i1 %tobool, label %if.end, label %if.then - -if.then: ; preds = %entry - tail call void @free(i8* %foo) - br label %if.end - -if.end: ; preds = %entry, %if.then - ret void -} - -; Same optimization with even a builtin 'operator delete' would be -; incorrect in general. -; 'if (p) delete p;' cannot result in a call to 'operator delete(0)'. -define void @test6a(i8* %foo) minsize { -; CHECK-LABEL: @test6a( -; CHECK-NEXT: entry: -; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i8* [[FOO:%.*]], null -; CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]] -; CHECK: if.then: -; CHECK-NEXT: tail call void @_ZdlPv(i8* [[FOO]]) #[[ATTR10:[0-9]+]] -; CHECK-NEXT: br label [[IF_END]] -; CHECK: if.end: -; CHECK-NEXT: ret void -; -entry: - %tobool = icmp eq i8* %foo, null - br i1 %tobool, label %if.end, label %if.then - -if.then: ; preds = %entry - tail call void @_ZdlPv(i8* %foo) builtin - br label %if.end - -if.end: ; preds = %entry, %if.then - ret void -} - -declare i8* @_ZnwmRKSt9nothrow_t(i64, i8*) nobuiltin -declare void @_ZdlPvRKSt9nothrow_t(i8*, i8*) nobuiltin -declare i32 @__gxx_personality_v0(...) -declare void @_ZN1AC2Ev(i8* %this) - -define void @test7() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) { -; CHECK-LABEL: @test7( -; CHECK-NEXT: entry: -; CHECK-NEXT: invoke void @_ZN1AC2Ev(i8* undef) -; CHECK-NEXT: to label [[DOTNOEXC_I:%.*]] unwind label [[LPAD_I:%.*]] -; CHECK: .noexc.i: -; CHECK-NEXT: unreachable -; CHECK: lpad.i: -; CHECK-NEXT: [[TMP0:%.*]] = landingpad { i8*, i32 } -; CHECK-NEXT: cleanup -; CHECK-NEXT: resume { i8*, i32 } [[TMP0]] -; -entry: - %nt = alloca i8 - %call.i = tail call i8* @_ZnwmRKSt9nothrow_t(i64 1, i8* %nt) builtin nounwind - invoke void @_ZN1AC2Ev(i8* undef) - to label %.noexc.i unwind label %lpad.i - -.noexc.i: ; preds = %entry - unreachable - -lpad.i: ; preds = %entry - %0 = landingpad { i8*, i32 } cleanup - call void @_ZdlPvRKSt9nothrow_t(i8* %call.i, i8* %nt) builtin nounwind - resume { i8*, i32 } %0 -} - -declare i8* @_Znwm(i64) nobuiltin -define i8* @_Znwj(i32 %n) nobuiltin { -; CHECK-LABEL: @_Znwj( -; CHECK-NEXT: [[Z:%.*]] = zext i32 [[N:%.*]] to i64 -; CHECK-NEXT: [[M:%.*]] = call i8* @_Znwm(i64 [[Z]]) -; CHECK-NEXT: ret i8* [[M]] -; - %z = zext i32 %n to i64 - %m = call i8* @_Znwm(i64 %z) - ret i8* %m -} -declare i8* @_Znam(i64) nobuiltin -declare i8* @_Znaj(i32) nobuiltin -declare void @_ZdlPv(i8*) nobuiltin -declare void @_ZdaPv(i8*) nobuiltin - -define linkonce void @_ZdlPvm(i8* %p, i64) nobuiltin { -; CHECK-LABEL: @_ZdlPvm( -; CHECK-NEXT: call void @_ZdlPv(i8* [[P:%.*]]) -; CHECK-NEXT: ret void -; - call void @_ZdlPv(i8* %p) - ret void -} -define linkonce void @_ZdlPvj(i8* %p, i32) nobuiltin { -; CHECK-LABEL: @_ZdlPvj( -; CHECK-NEXT: call void @_ZdlPv(i8* [[P:%.*]]) -; CHECK-NEXT: ret void -; - call void @_ZdlPv(i8* %p) - ret void -} -define linkonce void @_ZdaPvm(i8* %p, i64) nobuiltin { -; CHECK-LABEL: @_ZdaPvm( -; CHECK-NEXT: call void @_ZdaPv(i8* [[P:%.*]]) -; CHECK-NEXT: ret void -; - call void @_ZdaPv(i8* %p) - ret void -} -define linkonce void @_ZdaPvj(i8* %p, i32) nobuiltin { -; CHECK-LABEL: @_ZdaPvj( -; CHECK-NEXT: call void @_ZdaPv(i8* [[P:%.*]]) -; CHECK-NEXT: ret void -; - call void @_ZdaPv(i8* %p) - ret void -} - - -; new(size_t, align_val_t) -declare i8* @_ZnwmSt11align_val_t(i64, i64) nobuiltin -declare i8* @_ZnwjSt11align_val_t(i32, i32) nobuiltin -; new[](size_t, align_val_t) -declare i8* @_ZnamSt11align_val_t(i64, i64) nobuiltin -declare i8* @_ZnajSt11align_val_t(i32, i32) nobuiltin -; new(size_t, align_val_t, nothrow) -declare i8* @_ZnwmSt11align_val_tRKSt9nothrow_t(i64, i64, i8*) nobuiltin -declare i8* @_ZnwjSt11align_val_tRKSt9nothrow_t(i32, i32, i8*) nobuiltin -; new[](size_t, align_val_t, nothrow) -declare i8* @_ZnamSt11align_val_tRKSt9nothrow_t(i64, i64, i8*) nobuiltin -declare i8* @_ZnajSt11align_val_tRKSt9nothrow_t(i32, i32, i8*) nobuiltin -; delete(void*, align_val_t) -declare void @_ZdlPvSt11align_val_t(i8*, i64) nobuiltin -; delete[](void*, align_val_t) -declare void @_ZdaPvSt11align_val_t(i8*, i64) nobuiltin -; delete(void*, align_val_t, nothrow) -declare void @_ZdlPvSt11align_val_tRKSt9nothrow_t(i8*, i64, i8*) nobuiltin -; delete[](void*, align_val_t, nothrow) -declare void @_ZdaPvSt11align_val_tRKSt9nothrow_t(i8*, i64, i8*) nobuiltin -; delete(void*, unsigned int, align_val_t) -declare void @_ZdlPvjSt11align_val_t(i8*, i32, i32) nobuiltin -; delete(void*, unsigned long, align_val_t) -declare void @_ZdlPvmSt11align_val_t(i8*, i64, i64) nobuiltin -; delete[](void*, unsigned int, align_val_t) -declare void @_ZdaPvjSt11align_val_t(i8*, i32, i32) nobuiltin -; delete[](void*, unsigned long, align_val_t) -declare void @_ZdaPvmSt11align_val_t(i8*, i64, i64) nobuiltin - -declare void @llvm.assume(i1) - -define void @test8() { -; CHECK-LABEL: @test8( -; CHECK-NEXT: ret void -; - %nt = alloca i8 - %nw = call i8* @_Znwm(i64 32) builtin - call void @_ZdlPv(i8* %nw) builtin - %na = call i8* @_Znam(i64 32) builtin - call void @_ZdaPv(i8* %na) builtin - %nwm = call i8* @_Znwm(i64 32) builtin - call void @_ZdlPvm(i8* %nwm, i64 32) builtin - %nwj = call i8* @_Znwj(i32 32) builtin - call void @_ZdlPvj(i8* %nwj, i32 32) builtin - %nam = call i8* @_Znam(i64 32) builtin - call void @_ZdaPvm(i8* %nam, i64 32) builtin - %naj = call i8* @_Znaj(i32 32) builtin - call void @_ZdaPvj(i8* %naj, i32 32) builtin - %nwa = call i8* @_ZnwmSt11align_val_t(i64 32, i64 8) builtin - call void @_ZdlPvSt11align_val_t(i8* %nwa, i64 8) builtin - %naa = call i8* @_ZnamSt11align_val_t(i64 32, i64 8) builtin - call void @_ZdaPvSt11align_val_t(i8* %naa, i64 8) builtin - %nwja = call i8* @_ZnwjSt11align_val_t(i32 32, i32 8) builtin - call void @_ZdlPvSt11align_val_t(i8* %nwja, i64 8) builtin - %naja = call i8* @_ZnajSt11align_val_t(i32 32, i32 8) builtin - call void @_ZdaPvSt11align_val_t(i8* %naja, i64 8) builtin - %nwat = call i8* @_ZnwmSt11align_val_tRKSt9nothrow_t(i64 32, i64 8, i8* %nt) builtin - call void @_ZdlPvSt11align_val_tRKSt9nothrow_t(i8* %nwat, i64 8, i8* %nt) builtin - %naat = call i8* @_ZnamSt11align_val_tRKSt9nothrow_t(i64 32, i64 8, i8* %nt) builtin - call void @_ZdaPvSt11align_val_tRKSt9nothrow_t(i8* %naat, i64 8, i8* %nt) builtin - %nwjat = call i8* @_ZnwjSt11align_val_tRKSt9nothrow_t(i32 32, i32 8, i8* %nt) builtin - call void @_ZdlPvSt11align_val_tRKSt9nothrow_t(i8* %nwjat, i64 8, i8* %nt) builtin - %najat = call i8* @_ZnajSt11align_val_tRKSt9nothrow_t(i32 32, i32 8, i8* %nt) builtin - call void @_ZdaPvSt11align_val_tRKSt9nothrow_t(i8* %najat, i64 8, i8* %nt) builtin - %nwa2 = call i8* @_ZnwmSt11align_val_t(i64 32, i64 8) builtin - call void @_ZdlPvmSt11align_val_t(i8* %nwa2, i64 32, i64 8) builtin - %nwja2 = call i8* @_ZnwjSt11align_val_t(i32 32, i32 8) builtin - call void @_ZdlPvjSt11align_val_t(i8* %nwa2, i32 32, i32 8) builtin - %naa2 = call i8* @_ZnamSt11align_val_t(i64 32, i64 8) builtin - call void @_ZdaPvmSt11align_val_t(i8* %naa2, i64 32, i64 8) builtin - %naja2 = call i8* @_ZnajSt11align_val_t(i32 32, i32 8) builtin - call void @_ZdaPvjSt11align_val_t(i8* %naja2, i32 32, i32 8) builtin - - ; Check that the alignment assume does not prevent the removal. - %nwa3 = call i8* @_ZnwmSt11align_val_t(i64 32, i64 16) builtin - call void @llvm.assume(i1 true) [ "align"(i8* %nwa3, i64 16) ] - call void @_ZdlPvmSt11align_val_t(i8* %nwa3, i64 32, i64 16) builtin - - ret void -} - -declare noalias i8* @"\01??2@YAPEAX_K@Z"(i64) nobuiltin -declare void @"\01??3@YAXPEAX@Z"(i8*) nobuiltin - -define void @test9() { -; CHECK-LABEL: @test9( -; CHECK-NEXT: ret void -; - %new_long_long = call noalias i8* @"\01??2@YAPEAX_K@Z"(i64 32) builtin - call void @"\01??3@YAXPEAX@Z"(i8* %new_long_long) builtin - ret void -} - -define void @test10() { -; CHECK-LABEL: @test10( -; CHECK-NEXT: call void @_ZdlPv(i8* null) -; CHECK-NEXT: ret void -; - call void @_ZdlPv(i8* null) - ret void -} - -define void @test11() { -; CHECK-LABEL: @test11( -; CHECK-NEXT: [[CALL:%.*]] = call dereferenceable(8) i8* @_Znwm(i64 8) #[[ATTR10]] -; CHECK-NEXT: call void @_ZdlPv(i8* nonnull [[CALL]]) -; CHECK-NEXT: ret void -; - %call = call i8* @_Znwm(i64 8) builtin - call void @_ZdlPv(i8* %call) - ret void -} - -;; Check that the optimization that moves a call to free in its predecessor -;; block (see test6) also happens when noop casts are involved. -define void @test12(i32* %foo) minsize { -; CHECK-LABEL: @test12( -; CHECK-NEXT: entry: -; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32* [[FOO:%.*]], null -; CHECK-NEXT: [[BITCAST:%.*]] = bitcast i32* [[FOO]] to i8* -; CHECK-NEXT: tail call void @free(i8* [[BITCAST]]) -; CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]] -; CHECK: if.then: -; CHECK-NEXT: br label [[IF_END]] -; CHECK: if.end: -; CHECK-NEXT: ret void -; -;; Everything before the call to free should have been moved as well. -;; Call to free moved -;; Block is now empty and may be simplified by simplifycfg -entry: - %tobool = icmp eq i32* %foo, null - br i1 %tobool, label %if.end, label %if.then - -if.then: ; preds = %entry - %bitcast = bitcast i32* %foo to i8* - tail call void @free(i8* %bitcast) - br label %if.end - -if.end: ; preds = %entry, %if.then - ret void -} - -; The next four tests cover the semantics of the nofree attributes. These -; are thought to be legal transforms, but an implementation thereof has -; been reverted once due to difficult to isolate fallout. - -; TODO: Freeing a no-free pointer -> %foo must be null -define void @test13(i8* nofree %foo) { -; CHECK-LABEL: @test13( -; CHECK-NEXT: call void @free(i8* [[FOO:%.*]]) -; CHECK-NEXT: ret void -; - call void @free(i8* %foo) - ret void -} - -; TODO: Freeing a no-free pointer -> %foo must be null -define void @test14(i8* %foo) nofree { -; CHECK-LABEL: @test14( -; CHECK-NEXT: call void @free(i8* [[FOO:%.*]]) -; CHECK-NEXT: ret void -; - call void @free(i8* %foo) - ret void -} - -; TODO: free call marked no-free -> %foo must be null -define void @test15(i8* %foo) { -; CHECK-LABEL: @test15( -; CHECK-NEXT: call void @free(i8* [[FOO:%.*]]) #[[ATTR7:[0-9]+]] -; CHECK-NEXT: ret void -; - call void @free(i8* %foo) nofree - ret void -} - -; TODO: freeing a nonnull nofree pointer -> full UB -define void @test16(i8* nonnull nofree %foo) { -; CHECK-LABEL: @test16( -; CHECK-NEXT: call void @free(i8* [[FOO:%.*]]) -; CHECK-NEXT: ret void -; - call void @free(i8* %foo) - ret void -} - -declare i8* @llvm.launder.invariant.group(i8*) -declare i8* @llvm.strip.invariant.group(i8*) - -define void @test17() { -; CHECK-LABEL: @test17( -; CHECK-NEXT: ret void -; - %nw1 = call i8* @_Znwm(i64 32) builtin - %nw2 = call i8* @llvm.launder.invariant.group(i8* %nw1) - %nw3 = call i8* @llvm.strip.invariant.group(i8* %nw2) - store i8 1, i8* %nw3 - call void @_ZdlPv(i8* %nw2) builtin - ret void -} Index: llvm/test/Transforms/InstCombine/malloc-free.ll =================================================================== --- /dev/null +++ llvm/test/Transforms/InstCombine/malloc-free.ll @@ -0,0 +1,215 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt < %s -instcombine -S | FileCheck %s +; PR1201 +define i32 @main(i32 %argc, i8** %argv) { +; CHECK-LABEL: @main( +; CHECK-NEXT: ret i32 0 +; + %c_19 = alloca i8* + %malloc_206 = tail call i8* @malloc(i32 mul (i32 ptrtoint (i8* getelementptr (i8, i8* null, i32 1) to i32), i32 10)) + store i8* %malloc_206, i8** %c_19 + %tmp_207 = load i8*, i8** %c_19 + tail call void @free(i8* %tmp_207) + ret i32 0 +} + +define i32 @dead_aligned_alloc(i32 %size, i32 %alignment, i8 %value) { +; CHECK-LABEL: @dead_aligned_alloc( +; CHECK-NEXT: ret i32 0 +; + %aligned_allocation = tail call i8* @aligned_alloc(i32 %alignment, i32 %size) + store i8 %value, i8* %aligned_allocation + tail call void @free(i8* %aligned_allocation) + ret i32 0 +} + +declare noalias i8* @calloc(i32, i32) nounwind +declare noalias i8* @malloc(i32) +declare noalias i8* @aligned_alloc(i32, i32) +declare void @free(i8*) + +define i1 @foo() { +; CHECK-LABEL: @foo( +; CHECK-NEXT: ret i1 false +; + %m = call i8* @malloc(i32 1) + %z = icmp eq i8* %m, null + call void @free(i8* %m) + ret i1 %z +} + +declare void @llvm.lifetime.start.p0i8(i64, i8*) +declare void @llvm.lifetime.end.p0i8(i64, i8*) +declare i64 @llvm.objectsize.i64(i8*, i1) +declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i1) nounwind +declare void @llvm.memmove.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i1) nounwind +declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i1) nounwind + +define void @test3(i8* %src) { +; CHECK-LABEL: @test3( +; CHECK-NEXT: ret void +; + %a = call noalias i8* @malloc(i32 10) + call void @llvm.lifetime.start.p0i8(i64 10, i8* %a) + call void @llvm.lifetime.end.p0i8(i64 10, i8* %a) + %size = call i64 @llvm.objectsize.i64(i8* %a, i1 true) + store i8 42, i8* %a + call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a, i8* %src, i32 32, i1 false) + call void @llvm.memmove.p0i8.p0i8.i32(i8* %a, i8* %src, i32 32, i1 false) + call void @llvm.memset.p0i8.i32(i8* %a, i8 5, i32 32, i1 false) + %alloc2 = call noalias i8* @calloc(i32 5, i32 7) nounwind + %z = icmp ne i8* %alloc2, null + ret void +} + +;; This used to crash. +define void @test4() { +; CHECK-LABEL: @test4( +; CHECK-NEXT: ret void +; + %A = call i8* @malloc(i32 16000) + %B = bitcast i8* %A to double* + %C = bitcast double* %B to i8* + call void @free(i8* %C) + ret void +} + +define void @test5(i8* %ptr, i8** %esc) { +; CHECK-LABEL: @test5( +; CHECK-NEXT: [[A:%.*]] = call dereferenceable_or_null(700) i8* @malloc(i32 700) +; CHECK-NEXT: [[B:%.*]] = call dereferenceable_or_null(700) i8* @malloc(i32 700) +; CHECK-NEXT: [[C:%.*]] = call dereferenceable_or_null(700) i8* @malloc(i32 700) +; CHECK-NEXT: [[D:%.*]] = call dereferenceable_or_null(700) i8* @malloc(i32 700) +; CHECK-NEXT: [[E:%.*]] = call dereferenceable_or_null(700) i8* @malloc(i32 700) +; CHECK-NEXT: [[F:%.*]] = call dereferenceable_or_null(700) i8* @malloc(i32 700) +; CHECK-NEXT: [[G:%.*]] = call dereferenceable_or_null(700) i8* @malloc(i32 700) +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* noundef nonnull align 1 dereferenceable(32) [[PTR:%.*]], i8* noundef nonnull align 1 dereferenceable(32) [[A]], i32 32, i1 false) +; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* noundef nonnull align 1 dereferenceable(32) [[PTR]], i8* noundef nonnull align 1 dereferenceable(32) [[B]], i32 32, i1 false) +; CHECK-NEXT: store i8* [[C]], i8** [[ESC:%.*]], align 8 +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[D]], i8* [[PTR]], i32 32, i1 true) +; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* [[E]], i8* [[PTR]], i32 32, i1 true) +; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* [[F]], i8 5, i32 32, i1 true) +; CHECK-NEXT: store volatile i8 4, i8* [[G]], align 1 +; CHECK-NEXT: ret void +; + %a = call i8* @malloc(i32 700) + %b = call i8* @malloc(i32 700) + %c = call i8* @malloc(i32 700) + %d = call i8* @malloc(i32 700) + %e = call i8* @malloc(i32 700) + %f = call i8* @malloc(i32 700) + %g = call i8* @malloc(i32 700) + call void @llvm.memcpy.p0i8.p0i8.i32(i8* %ptr, i8* %a, i32 32, i1 false) + call void @llvm.memmove.p0i8.p0i8.i32(i8* %ptr, i8* %b, i32 32, i1 false) + store i8* %c, i8** %esc + call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %ptr, i32 32, i1 true) + call void @llvm.memmove.p0i8.p0i8.i32(i8* %e, i8* %ptr, i32 32, i1 true) + call void @llvm.memset.p0i8.i32(i8* %f, i8 5, i32 32, i1 true) + store volatile i8 4, i8* %g + ret void +} + +;; When a basic block contains only a call to free and this block is accessed +;; through a test of the argument of free against null, move the call in the +;; predecessor block. +;; Using simplifycfg will remove the empty basic block and the branch operation +;; Then, performing a dead elimination will remove the comparison. +;; This is what happens with -O1 and upper. +define void @test6(i8* %foo) minsize { +; CHECK-LABEL: @test6( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i8* [[FOO:%.*]], null +; CHECK-NEXT: tail call void @free(i8* [[FOO]]) +; CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]] +; CHECK: if.then: +; CHECK-NEXT: br label [[IF_END]] +; CHECK: if.end: +; CHECK-NEXT: ret void +; +;; Call to free moved +;; Block is now empty and may be simplified by simplifycfg +entry: + %tobool = icmp eq i8* %foo, null + br i1 %tobool, label %if.end, label %if.then + +if.then: ; preds = %entry + tail call void @free(i8* %foo) + br label %if.end + +if.end: ; preds = %entry, %if.then + ret void +} + +;; Check that the optimization that moves a call to free in its predecessor +;; block (see test6) also happens when noop casts are involved. +define void @test12(i32* %foo) minsize { +; CHECK-LABEL: @test12( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32* [[FOO:%.*]], null +; CHECK-NEXT: [[BITCAST:%.*]] = bitcast i32* [[FOO]] to i8* +; CHECK-NEXT: tail call void @free(i8* [[BITCAST]]) +; CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]] +; CHECK: if.then: +; CHECK-NEXT: br label [[IF_END]] +; CHECK: if.end: +; CHECK-NEXT: ret void +; +;; Everything before the call to free should have been moved as well. +;; Call to free moved +;; Block is now empty and may be simplified by simplifycfg +entry: + %tobool = icmp eq i32* %foo, null + br i1 %tobool, label %if.end, label %if.then + +if.then: ; preds = %entry + %bitcast = bitcast i32* %foo to i8* + tail call void @free(i8* %bitcast) + br label %if.end + +if.end: ; preds = %entry, %if.then + ret void +} + +; The next four tests cover the semantics of the nofree attributes. These +; are thought to be legal transforms, but an implementation thereof has +; been reverted once due to difficult to isolate fallout. + +; TODO: Freeing a no-free pointer -> %foo must be null +define void @test13(i8* nofree %foo) { +; CHECK-LABEL: @test13( +; CHECK-NEXT: call void @free(i8* [[FOO:%.*]]) +; CHECK-NEXT: ret void +; + call void @free(i8* %foo) + ret void +} + +; TODO: Freeing a no-free pointer -> %foo must be null +define void @test14(i8* %foo) nofree { +; CHECK-LABEL: @test14( +; CHECK-NEXT: call void @free(i8* [[FOO:%.*]]) +; CHECK-NEXT: ret void +; + call void @free(i8* %foo) + ret void +} + +; TODO: free call marked no-free -> %foo must be null +define void @test15(i8* %foo) { +; CHECK-LABEL: @test15( +; CHECK-NEXT: call void @free(i8* [[FOO:%.*]]) #[[ATTR5:[0-9]+]] +; CHECK-NEXT: ret void +; + call void @free(i8* %foo) nofree + ret void +} + +; TODO: freeing a nonnull nofree pointer -> full UB +define void @test16(i8* nonnull nofree %foo) { +; CHECK-LABEL: @test16( +; CHECK-NEXT: call void @free(i8* [[FOO:%.*]]) +; CHECK-NEXT: ret void +; + call void @free(i8* %foo) + ret void +} Index: llvm/test/Transforms/InstCombine/new-delete-itanium.ll =================================================================== --- /dev/null +++ llvm/test/Transforms/InstCombine/new-delete-itanium.ll @@ -0,0 +1,226 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt < %s -mtriple x86_64--linux -instcombine -S | FileCheck %s +; REQUIRES: x86-registered-target +; PR1201 + +; 'if (p) delete p;' cannot result in a call to 'operator delete(0)'. +define void @test6a(i8* %foo) minsize { +; CHECK-LABEL: @test6a( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i8* [[FOO:%.*]], null +; CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]] +; CHECK: if.then: +; CHECK-NEXT: tail call void @_ZdlPv(i8* [[FOO]]) #[[ATTR5:[0-9]+]] +; CHECK-NEXT: br label [[IF_END]] +; CHECK: if.end: +; CHECK-NEXT: ret void +; +entry: + %tobool = icmp eq i8* %foo, null + br i1 %tobool, label %if.end, label %if.then + +if.then: ; preds = %entry + tail call void @_ZdlPv(i8* %foo) builtin + br label %if.end + +if.end: ; preds = %entry, %if.then + ret void +} + +declare i8* @_ZnwmRKSt9nothrow_t(i64, i8*) nobuiltin +declare void @_ZdlPvRKSt9nothrow_t(i8*, i8*) nobuiltin +declare i32 @__gxx_personality_v0(...) +declare void @_ZN1AC2Ev(i8* %this) + +define void @test7() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) { +; CHECK-LABEL: @test7( +; CHECK-NEXT: entry: +; CHECK-NEXT: invoke void @_ZN1AC2Ev(i8* undef) +; CHECK-NEXT: to label [[DOTNOEXC_I:%.*]] unwind label [[LPAD_I:%.*]] +; CHECK: .noexc.i: +; CHECK-NEXT: unreachable +; CHECK: lpad.i: +; CHECK-NEXT: [[TMP0:%.*]] = landingpad { i8*, i32 } +; CHECK-NEXT: cleanup +; CHECK-NEXT: resume { i8*, i32 } [[TMP0]] +; +entry: + %nt = alloca i8 + %call.i = tail call i8* @_ZnwmRKSt9nothrow_t(i64 1, i8* %nt) builtin nounwind + invoke void @_ZN1AC2Ev(i8* undef) + to label %.noexc.i unwind label %lpad.i + +.noexc.i: ; preds = %entry + unreachable + +lpad.i: ; preds = %entry + %0 = landingpad { i8*, i32 } cleanup + call void @_ZdlPvRKSt9nothrow_t(i8* %call.i, i8* %nt) builtin nounwind + resume { i8*, i32 } %0 +} + +declare i8* @_Znwm(i64) nobuiltin +define i8* @_Znwj(i32 %n) nobuiltin { +; CHECK-LABEL: @_Znwj( +; CHECK-NEXT: [[Z:%.*]] = zext i32 [[N:%.*]] to i64 +; CHECK-NEXT: [[M:%.*]] = call i8* @_Znwm(i64 [[Z]]) +; CHECK-NEXT: ret i8* [[M]] +; + %z = zext i32 %n to i64 + %m = call i8* @_Znwm(i64 %z) + ret i8* %m +} +declare i8* @_Znam(i64) nobuiltin +declare i8* @_Znaj(i32) nobuiltin +declare void @_ZdlPv(i8*) nobuiltin +declare void @_ZdaPv(i8*) nobuiltin + +define linkonce void @_ZdlPvm(i8* %p, i64) nobuiltin { +; CHECK-LABEL: @_ZdlPvm( +; CHECK-NEXT: call void @_ZdlPv(i8* [[P:%.*]]) +; CHECK-NEXT: ret void +; + call void @_ZdlPv(i8* %p) + ret void +} +define linkonce void @_ZdlPvj(i8* %p, i32) nobuiltin { +; CHECK-LABEL: @_ZdlPvj( +; CHECK-NEXT: call void @_ZdlPv(i8* [[P:%.*]]) +; CHECK-NEXT: ret void +; + call void @_ZdlPv(i8* %p) + ret void +} +define linkonce void @_ZdaPvm(i8* %p, i64) nobuiltin { +; CHECK-LABEL: @_ZdaPvm( +; CHECK-NEXT: call void @_ZdaPv(i8* [[P:%.*]]) +; CHECK-NEXT: ret void +; + call void @_ZdaPv(i8* %p) + ret void +} +define linkonce void @_ZdaPvj(i8* %p, i32) nobuiltin { +; CHECK-LABEL: @_ZdaPvj( +; CHECK-NEXT: call void @_ZdaPv(i8* [[P:%.*]]) +; CHECK-NEXT: ret void +; + call void @_ZdaPv(i8* %p) + ret void +} + + +; new(size_t, align_val_t) +declare i8* @_ZnwmSt11align_val_t(i64, i64) nobuiltin +declare i8* @_ZnwjSt11align_val_t(i32, i32) nobuiltin +; new[](size_t, align_val_t) +declare i8* @_ZnamSt11align_val_t(i64, i64) nobuiltin +declare i8* @_ZnajSt11align_val_t(i32, i32) nobuiltin +; new(size_t, align_val_t, nothrow) +declare i8* @_ZnwmSt11align_val_tRKSt9nothrow_t(i64, i64, i8*) nobuiltin +declare i8* @_ZnwjSt11align_val_tRKSt9nothrow_t(i32, i32, i8*) nobuiltin +; new[](size_t, align_val_t, nothrow) +declare i8* @_ZnamSt11align_val_tRKSt9nothrow_t(i64, i64, i8*) nobuiltin +declare i8* @_ZnajSt11align_val_tRKSt9nothrow_t(i32, i32, i8*) nobuiltin +; delete(void*, align_val_t) +declare void @_ZdlPvSt11align_val_t(i8*, i64) nobuiltin +; delete[](void*, align_val_t) +declare void @_ZdaPvSt11align_val_t(i8*, i64) nobuiltin +; delete(void*, align_val_t, nothrow) +declare void @_ZdlPvSt11align_val_tRKSt9nothrow_t(i8*, i64, i8*) nobuiltin +; delete[](void*, align_val_t, nothrow) +declare void @_ZdaPvSt11align_val_tRKSt9nothrow_t(i8*, i64, i8*) nobuiltin +; delete(void*, unsigned int, align_val_t) +declare void @_ZdlPvjSt11align_val_t(i8*, i32, i32) nobuiltin +; delete(void*, unsigned long, align_val_t) +declare void @_ZdlPvmSt11align_val_t(i8*, i64, i64) nobuiltin +; delete[](void*, unsigned int, align_val_t) +declare void @_ZdaPvjSt11align_val_t(i8*, i32, i32) nobuiltin +; delete[](void*, unsigned long, align_val_t) +declare void @_ZdaPvmSt11align_val_t(i8*, i64, i64) nobuiltin + +declare void @llvm.assume(i1) + +define void @test8() { +; CHECK-LABEL: @test8( +; CHECK-NEXT: ret void +; + %nt = alloca i8 + %nw = call i8* @_Znwm(i64 32) builtin + call void @_ZdlPv(i8* %nw) builtin + %na = call i8* @_Znam(i64 32) builtin + call void @_ZdaPv(i8* %na) builtin + %nwm = call i8* @_Znwm(i64 32) builtin + call void @_ZdlPvm(i8* %nwm, i64 32) builtin + %nwj = call i8* @_Znwj(i32 32) builtin + call void @_ZdlPvj(i8* %nwj, i32 32) builtin + %nam = call i8* @_Znam(i64 32) builtin + call void @_ZdaPvm(i8* %nam, i64 32) builtin + %naj = call i8* @_Znaj(i32 32) builtin + call void @_ZdaPvj(i8* %naj, i32 32) builtin + %nwa = call i8* @_ZnwmSt11align_val_t(i64 32, i64 8) builtin + call void @_ZdlPvSt11align_val_t(i8* %nwa, i64 8) builtin + %naa = call i8* @_ZnamSt11align_val_t(i64 32, i64 8) builtin + call void @_ZdaPvSt11align_val_t(i8* %naa, i64 8) builtin + %nwja = call i8* @_ZnwjSt11align_val_t(i32 32, i32 8) builtin + call void @_ZdlPvSt11align_val_t(i8* %nwja, i64 8) builtin + %naja = call i8* @_ZnajSt11align_val_t(i32 32, i32 8) builtin + call void @_ZdaPvSt11align_val_t(i8* %naja, i64 8) builtin + %nwat = call i8* @_ZnwmSt11align_val_tRKSt9nothrow_t(i64 32, i64 8, i8* %nt) builtin + call void @_ZdlPvSt11align_val_tRKSt9nothrow_t(i8* %nwat, i64 8, i8* %nt) builtin + %naat = call i8* @_ZnamSt11align_val_tRKSt9nothrow_t(i64 32, i64 8, i8* %nt) builtin + call void @_ZdaPvSt11align_val_tRKSt9nothrow_t(i8* %naat, i64 8, i8* %nt) builtin + %nwjat = call i8* @_ZnwjSt11align_val_tRKSt9nothrow_t(i32 32, i32 8, i8* %nt) builtin + call void @_ZdlPvSt11align_val_tRKSt9nothrow_t(i8* %nwjat, i64 8, i8* %nt) builtin + %najat = call i8* @_ZnajSt11align_val_tRKSt9nothrow_t(i32 32, i32 8, i8* %nt) builtin + call void @_ZdaPvSt11align_val_tRKSt9nothrow_t(i8* %najat, i64 8, i8* %nt) builtin + %nwa2 = call i8* @_ZnwmSt11align_val_t(i64 32, i64 8) builtin + call void @_ZdlPvmSt11align_val_t(i8* %nwa2, i64 32, i64 8) builtin + %nwja2 = call i8* @_ZnwjSt11align_val_t(i32 32, i32 8) builtin + call void @_ZdlPvjSt11align_val_t(i8* %nwa2, i32 32, i32 8) builtin + %naa2 = call i8* @_ZnamSt11align_val_t(i64 32, i64 8) builtin + call void @_ZdaPvmSt11align_val_t(i8* %naa2, i64 32, i64 8) builtin + %naja2 = call i8* @_ZnajSt11align_val_t(i32 32, i32 8) builtin + call void @_ZdaPvjSt11align_val_t(i8* %naja2, i32 32, i32 8) builtin + + ; Check that the alignment assume does not prevent the removal. + %nwa3 = call i8* @_ZnwmSt11align_val_t(i64 32, i64 16) builtin + call void @llvm.assume(i1 true) [ "align"(i8* %nwa3, i64 16) ] + call void @_ZdlPvmSt11align_val_t(i8* %nwa3, i64 32, i64 16) builtin + + ret void +} + +define void @test10() { +; CHECK-LABEL: @test10( +; CHECK-NEXT: call void @_ZdlPv(i8* null) +; CHECK-NEXT: ret void +; + call void @_ZdlPv(i8* null) + ret void +} + +define void @test11() { +; CHECK-LABEL: @test11( +; CHECK-NEXT: [[CALL:%.*]] = call dereferenceable(8) i8* @_Znwm(i64 8) #[[ATTR5]] +; CHECK-NEXT: call void @_ZdlPv(i8* nonnull [[CALL]]) +; CHECK-NEXT: ret void +; + %call = call i8* @_Znwm(i64 8) builtin + call void @_ZdlPv(i8* %call) + ret void +} + +declare i8* @llvm.launder.invariant.group(i8*) +declare i8* @llvm.strip.invariant.group(i8*) + +define void @test17() { +; CHECK-LABEL: @test17( +; CHECK-NEXT: ret void +; + %nw1 = call i8* @_Znwm(i64 32) builtin + %nw2 = call i8* @llvm.launder.invariant.group(i8* %nw1) + %nw3 = call i8* @llvm.strip.invariant.group(i8* %nw2) + store i8 1, i8* %nw3 + call void @_ZdlPv(i8* %nw2) builtin + ret void +} Index: llvm/test/Transforms/InstCombine/new-delete-msvc.ll =================================================================== --- /dev/null +++ llvm/test/Transforms/InstCombine/new-delete-msvc.ll @@ -0,0 +1,17 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt < %s -mtriple x86_64--windows -instcombine -S | FileCheck %s +; REQUIRES: x86-registered-target +; PR1201 + +declare noalias i8* @"\01??2@YAPEAX_K@Z"(i64) nobuiltin +declare void @"\01??3@YAXPEAX@Z"(i8*) nobuiltin + +define void @test9() { +; CHECK-LABEL: @test9( +; CHECK-NEXT: ret void +; + %new_long_long = call noalias i8* @"\01??2@YAPEAX_K@Z"(i64 32) builtin + call void @"\01??3@YAXPEAX@Z"(i8* %new_long_long) builtin + ret void +} +