[NVPTX][tests] Do not run tests that require direct object generation

[ikudrin]

Summary

NVPTX does not support generating binary files, which is required for these tests.

The majority of tests in 'DebugInfo/Generic' also require emitting object files, so they all are disabled for NVPTX.

[nigelp-xmos]

The code LGTM. When object-emission was reintroduced in D98508, there was some discussion on whether XCore ought to use this feature, or provide an integrated assembler instead. Sorry I don't know NVPTX: is NVPTX different because it generates assembly as its natural output, and binary does not make sense? Or could it have an integrated assembler at some point?

[ikudrin]

In D121996#3392197, @nigelp-xmos wrote:

The code LGTM. When object-emission was reintroduced in D98508, there was some discussion on whether XCore ought to use this feature, or provide an integrated assembler instead. Sorry I don't know NVPTX: is NVPTX different because it generates assembly as its natural output, and binary does not make sense? Or could it have an integrated assembler at some point?

As far as I know, there are no plans for adding the integrated assembler.

[nigelp-xmos]

LGTM but I would prefer to hear from other reviewers who commented on object-emission before.

[tra]

In D121996#3392197, @nigelp-xmos wrote:

The code LGTM. When object-emission was reintroduced in D98508, there was some discussion on whether XCore ought to use this feature, or provide an integrated assembler instead. Sorry I don't know NVPTX: is NVPTX different because it generates assembly as its natural output, and binary does not make sense? Or could it have an integrated assembler at some point?

NVPTX only generates assembly. It is not going to have native code generation any time soon. It it did, we'd have multiple native back-ends. In other words, LGTM as far as NVPTX back-end is concerned.

[MaskRay]

LGTM

llvm/test/DebugInfo/Generic/lit.local.cfg

 if not config.target_triple:
     config.unsupported = True
-elif 'xcore' in config.target_triple:
+elif config.target_triple.startswith(("nvptx", "xcore")):
     config.unsupported = True

llvm/test/DebugInfo/attr-btf_type_tag.ll

-; REQUIRES: x86-registered-target
+; REQUIRES: object-emission
 ; RUN: llc -filetype=obj -o %t %s
 ; RUN: llvm-dwarfdump -debug-info %t | FileCheck %s
 ; Source:
 ;   #define __tag1 __attribute__((btf_type_tag("tag1")))
 ;   #define __tag2 __attribute__((btf_type_tag("tag2")))
 ;
 ;   int * __tag1 * __tag2 *g;
 ; Compilation flag:

llvm/test/DebugInfo/dwarfdump-immutable.ll

 ;; This test checks whether DWARF tag DW_TAG_immutable_type
 ;; is accepted and processed.
-; REQUIRES: default_triple
+; REQUIRES: object-emission
 ; RUN: %llc_dwarf %s -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
 
 ;; Test whether DW_TAG_immutable_type is accepted.
 
 ; CHECK: DW_TAG_immutable_type
 
 ; ModuleID = 'immutable.d'
 source_filename = "immutable.d"

llvm/test/Instrumentation/InstrProfiling/debug-info-correlate.ll

 ; RUN: opt < %s -instrprof -debug-info-correlate -S > %t.ll
 ; RUN: FileCheck < %t.ll --implicit-check-not "{{__llvm_prf_data|__llvm_prf_names}}" %s
 ; RUN: %llc_dwarf -O0 -filetype=obj < %t.ll | llvm-dwarfdump - | FileCheck --implicit-check-not "{{DW_TAG|NULL}}" %s --check-prefix CHECK-DWARF
 
-; REQUIRES: system-linux
+; REQUIRES: system-linux, object-emission
 
 @__profn_foo = private constant [3 x i8] c"foo"
 ; CHECK:      @__profc_foo =
 ; CHECK-SAME: !dbg ![[EXPR:[0-9]+]]
 
 ; CHECK:      ![[EXPR]] = !DIGlobalVariableExpression(var: ![[GLOBAL:[0-9]+]]
 ; CHECK:      ![[GLOBAL]] = {{.*}} !DIGlobalVariable(name: "__profc_foo"
 ; CHECK-SAME: scope: ![[SCOPE:[0-9]+]]

llvm/test/MC/AsmParser/debug-empty-source.s

 // XFAIL: -aix
 // UNSUPPORTED: -zos
-// REQUIRES: default_triple
+// REQUIRES: object-emission
 // RUN: llvm-mc %s -o -| FileCheck %s
 
 .file 1 "dir1" "foo" source ""
 
 # CHECK: .file {{.*}} source ""

llvm/test/MC/AsmParser/debug-no-source.s

 // UNSUPPORTED: -zos
-// REQUIRES: default_triple
+// REQUIRES: object-emission
 // RUN: llvm-mc %s | FileCheck %s
 
 .file 1 "dir1/foo"
 
 # CHECK-NOT: .file {{.*}} source

llvm/test/MC/ELF/cfi-version.ll

 ; RUN: %llc_dwarf %s -o - -dwarf-version 2 -filetype=obj | llvm-dwarfdump -v - | FileCheck %s --check-prefix=DWARF2
 ; RUN: %llc_dwarf %s -o - -dwarf-version 3 -filetype=obj | llvm-dwarfdump -v - | FileCheck %s --check-prefix=DWARF3
 ; RUN: %llc_dwarf %s -o - -dwarf-version 4 -filetype=obj | llvm-dwarfdump -v - | FileCheck %s --check-prefix=DWARF4
 ; RUN: %llc_dwarf %s -o - -dwarf-version 5 -filetype=obj | llvm-dwarfdump -v - | FileCheck %s --check-prefix=DWARF4
 
 ; PR46647
 ; XFAIL: arm64-apple
 
 ; .debug_frame is not emitted for targeting Windows x64, arm64, or AIX.
 ; REQUIRES: debug_frame
-; REQUIRES: default_triple
+; REQUIRES: object-emission
 
 ; Function Attrs: nounwind
 define i32 @foo() #0 !dbg !4 {
 entry:
   %call = call i32 bitcast (i32 (...)* @bar to i32 ()*)(), !dbg !12
   %add = add nsw i32 %call, 1, !dbg !12
   ret i32 %add, !dbg !12
 }

llvm/test/MC/ELF/dwarf-file0.s

 # XFAIL: -aix
 # UNSUPPORTED: -zos
-# REQUIRES: default_triple
+# REQUIRES: object-emission
 # RUN: llvm-mc -dwarf-version 4 %s -filetype=obj -o - | llvm-dwarfdump -debug-line - | FileCheck %s
 # RUN: llvm-mc -dwarf-version 4 %s --fatal-warnings -o - | FileCheck %s --check-prefix=ASM
 # RUN: llvm-mc -dwarf-version 5 %s -filetype=obj -o - | llvm-dwarfdump -debug-line - | FileCheck %s
 # RUN: llvm-mc -dwarf-version 5 %s -o - | FileCheck %s --check-prefix=ASM
 
 ## If the DWARF version is less than 5, .file 0 upgrades the version to 5.
         .file 0 "/test" "root.cpp"
         .file 1 "/include" "header.h"

llvm/test/MC/ELF/dwarf-loc0.s

 # XFAIL: -aix
 # UNSUPPORTED: -zos
-# REQUIRES: default_triple
+# REQUIRES: object-emission
 # RUN: llvm-mc -dwarf-version 5 --defsym FILE0=1 %s -filetype=obj -o - | llvm-dwarfdump -debug-line - | FileCheck %s
 # RUN: not llvm-mc -dwarf-version 4 %s -filetype=asm -o - 2>&1 | FileCheck %s -check-prefix=ERR
 # Show that ".loc 0" works in DWARF v5, gets an error for earlier versions.
 .ifdef FILE0
         .file 0 "root.cpp"
 .endif
         .file 1 "header.h"
   .loc  0 10 0

llvm/test/lit.cfg.py

 if config.libcxx_used:
     config.available_features.add('libcxx-used')
 
 # LLVM can be configured with an empty default triple
 # Some tests are "generic" and require a valid default triple
 if config.target_triple:
     config.available_features.add('default_triple')
     # Direct object generation
-    if not 'xcore' in config.target_triple:
+    if not config.target_triple.startswith(("nvptx", "xcore")):
         config.available_features.add('object-emission')
 
 import subprocess
 
 
 def have_ld_plugin_support():
     if not os.path.exists(os.path.join(config.llvm_shlib_dir, 'LLVMgold' + config.llvm_shlib_ext)):
         return False

llvm/test/tools/llvm-mc/lit.local.cfg

 # Requires a non-empty default triple for these tests
-if 'default_triple' not in config.available_features:
+if 'object-emission' not in config.available_features:
     config.unsupported = True