[clang] [llvm] [WIP] Support the inline asm 'a' constraint on PowerPC (PR #141604)

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Tue May 27 06:47:00 PDT 2025


github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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You can test this locally with the following command:
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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions h,cpp,c -- clang/test/CodeGen/PowerPC/inline-asm-constraints.c clang/lib/Basic/Targets/PPC.h clang/test/CodeGen/PowerPC/inline-asm-constraints-error.c llvm/include/llvm/IR/InlineAsm.h llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp llvm/lib/Target/PowerPC/PPCISelLowering.cpp llvm/lib/Target/PowerPC/PPCISelLowering.h
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.h b/llvm/lib/Target/PowerPC/PPCISelLowering.h
index 27fc3d537..be33f0525 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.h
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.h
@@ -1004,12 +1004,12 @@ namespace llvm {
     InlineAsm::ConstraintCode
     getInlineAsmMemConstraint(StringRef ConstraintCode) const override {
       return StringSwitch<InlineAsm::ConstraintCode>(ConstraintCode)
-        .Case("es", InlineAsm::ConstraintCode::es)
-        .Case("Q", InlineAsm::ConstraintCode::Q)
-        .Case("Z", InlineAsm::ConstraintCode::Z)
-        .Case("Zy", InlineAsm::ConstraintCode::Zy)
-        .Case("a", InlineAsm::ConstraintCode::a)
-        .Default(TargetLowering::getInlineAsmMemConstraint(ConstraintCode));
+          .Case("es", InlineAsm::ConstraintCode::es)
+          .Case("Q", InlineAsm::ConstraintCode::Q)
+          .Case("Z", InlineAsm::ConstraintCode::Z)
+          .Case("Zy", InlineAsm::ConstraintCode::Zy)
+          .Case("a", InlineAsm::ConstraintCode::a)
+          .Default(TargetLowering::getInlineAsmMemConstraint(ConstraintCode));
     }
 
     void CollectTargetIntrinsicOperands(const CallInst &I,

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https://github.com/llvm/llvm-project/pull/141604


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