[llvm] e3ca61f - AMDGPU: Deprecate getArchAttrAMDGCN (#217769)

[via llvm-commits]

Author: Matt Arsenault
Date: 2026-08-24T15:01:52+02:00
New Revision: e3ca61f7a41d0324453dd4e6fe67d2a4541d810b

URL: https://github.com/llvm/llvm-project/commit/e3ca61f7a41d0324453dd4e6fe67d2a4541d810b
DIFF: https://github.com/llvm/llvm-project/commit/e3ca61f7a41d0324453dd4e6fe67d2a4541d810b.diff

LOG: AMDGPU: Deprecate getArchAttrAMDGCN (#217769)

The legacy ArchFeatureKind bitfield returned by getArchAttrAMDGCN is
being replaced by getFeatureBitset (FEAT_* bits). All in-tree callers have
been migrated, so mark both overloads LLVM_DEPRECATED to steer out of 
tree code to the bitset API before the accessor is removed.

Co-authored-by: Claude (Claude-Opus-4.8) <noreply at anthropic.com>

Added: 
    

Modified: 
    llvm/include/llvm/TargetParser/AMDGPUTargetParser.h
    llvm/lib/TargetParser/AMDGPUTargetParser.cpp

Removed: 
    


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diff  --git a/llvm/include/llvm/TargetParser/AMDGPUTargetParser.h b/llvm/include/llvm/TargetParser/AMDGPUTargetParser.h
index f8e283db55fec..f2c6bdae55c97 100644
--- a/llvm/include/llvm/TargetParser/AMDGPUTargetParser.h
+++ b/llvm/include/llvm/TargetParser/AMDGPUTargetParser.h
@@ -161,7 +161,11 @@ LLVM_ABI StringRef getCanonicalArchName(const Triple &T, StringRef Arch);
 LLVM_ABI GPUKind parseArchAMDGCN(StringRef CPU);
 LLVM_ABI GPUKind parseArchR600(StringRef CPU);
 LLVM_ABI GPUKind getGPUKindFromSubArch(Triple::SubArchType SubArch);
+/// \deprecated Use getFeatureBitset and test the relevant FEAT_* bits instead.
+/// The legacy ArchFeatureKind bitfield is being removed.
+LLVM_DEPRECATED("use getFeatureBitset instead", "getFeatureBitset")
 LLVM_ABI unsigned getArchAttrAMDGCN(GPUKind AK);
+LLVM_DEPRECATED("use getFeatureBitset instead", "getFeatureBitset")
 LLVM_ABI unsigned getArchAttrAMDGCN(Triple::SubArchType SubArch);
 LLVM_ABI R600FeatureKind getArchAttrR600(GPUKind AK);
 

diff  --git a/llvm/lib/TargetParser/AMDGPUTargetParser.cpp b/llvm/lib/TargetParser/AMDGPUTargetParser.cpp
index 98affe3e0d7bd..1f25b579fcc84 100644
--- a/llvm/lib/TargetParser/AMDGPUTargetParser.cpp
+++ b/llvm/lib/TargetParser/AMDGPUTargetParser.cpp
@@ -310,7 +310,8 @@ unsigned AMDGPU::getArchAttrAMDGCN(GPUKind AK) {
 }
 
 unsigned AMDGPU::getArchAttrAMDGCN(Triple::SubArchType SubArch) {
-  return getArchAttrAMDGCN(getGPUKindFromSubArch(SubArch));
+  const GPUInfo *Info = getAMDGPUInfo(getGPUKindFromSubArch(SubArch));
+  return Info ? Info->ArchFeatures : FEATURE_NONE;
 }
 
 R600FeatureKind AMDGPU::getArchAttrR600(GPUKind AK) {