[LLVM][MC] Disable cfi-version test for aarch64-pc-windows*

[omjavaid]

Summary

This patch disables MC/ELF/cfi-version.ll test as windows does not emit
.debug_frame needed by the test. This was previously disabled for arm64
but windows on arm uses aarch64-pc-windows* triple. Replacing arm64 with
aarch64 to accomodate windows aarch64 triple(s).

[DavidSpickett]

Is target_triple some normalised triple because I do see some arm64-windows in the tests. E.g. llvm/test/CodeGen/AArch64/arm64-windows-tailcall.ll and llvm/test/MC/AArch64/arm64ec.s.

Checking for both would be fine (I half expect that at least clang would accept either, it's not very picky).

[omjavaid]

As suggested I have accomodated both arm64 and aarch64.

[DavidSpickett]

LGTM.

[MaskRay]

Any idea for windows-gnu|windows-msvc|aix, which system uses arm64 as the canonical target triple name? I think all use aarch64 except arm64 for macOS/iOS?

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.
+; .debug_frame is not emitted for targeting Windows x64, aarch64/arm64, or AIX.
 ; REQUIRES: debug_frame
 ; 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

llvm/test/lit.cfg.py

if sysctl_cmd.wait():
         print(
           "Warning: sysctl exists but calling \"{}\" failed, defaulting to no fma3.".format(
           " ".join(cmd)))
     else:
         result = sysctl_cmd.stdout.read().decode('ascii')
         if 'hw.optional.fma: 1' in result:
             config.available_features.add('fma3')
 
-# .debug_frame is not emitted for targeting Windows x64, arm64, or AIX.
-if not re.match(r'^(x86_64|arm64|powerpc|powerpc64).*-(windows-gnu|windows-msvc|aix)', config.target_triple):
+# .debug_frame is not emitted for targeting Windows x64, aarch64/arm64, or AIX.
+if not re.match(r'^(x86_64|aarch64|arm64|powerpc|powerpc64).*-(windows-gnu|windows-msvc|aix)', config.target_triple):
     config.available_features.add('debug_frame')
 
 if config.have_libxar:
     config.available_features.add('xar')
 
 if config.enable_threads:
     config.available_features.add('thread_support')