[RISCV] Emitting proper atomic ABI tag when Zalasr is enabled

[mehnadnerd]

When Zalasr is enabled, it will emit the A7 atomic ABI tag.

[llvmbot]

@llvm/pr-subscribers-backend-risc-v

Author: Brendan Sweeney (mehnadnerd)

Changes

When Zalasr is enabled, it will emit the A7 atomic ABI tag.

---

Full diff: https://github.com/llvm/llvm-project/pull/121017.diff

1 Files Affected:

• (modified) llvm/lib/Target/RISCV/MCTargetDesc/RISCVTargetStreamer.cpp (+5-3)

diff --git a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVTargetStreamer.cpp b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVTargetStreamer.cpp
index 99f57f47835abd..6035dffaa8ac8e 100644
--- a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVTargetStreamer.cpp
+++ b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVTargetStreamer.cpp
@@ -86,9 +86,11 @@ void RISCVTargetStreamer::emitTargetAttributes(const MCSubtargetInfo &STI,
 
   if (RiscvAbiAttr && STI.hasFeature(RISCV::FeatureStdExtA)) {
     unsigned AtomicABITag = static_cast<unsigned>(
-        STI.hasFeature(RISCV::FeatureNoTrailingSeqCstFence)
-            ? RISCVAttrs::RISCVAtomicAbiTag::A6C
-            : RISCVAttrs::RISCVAtomicAbiTag::A6S);
+        STI.hasFeature(RISCV::FeatureStdExtZalasr)
+            ? RISCVAttrs::RISCVAtomicAbiTag::A7
+            : STI.hasFeature(RISCV::FeatureNoTrailingSeqCstFence)
+              ? RISCVAttrs::RISCVAtomicAbiTag::A6C
+              : RISCVAttrs::RISCVAtomicAbiTag::A6S);
     emitAttribute(RISCVAttrs::ATOMIC_ABI, AtomicABITag);
   }
 }

[github-actions]

✅ With the latest revision this PR passed the C/C++ code formatter.

[mehnadnerd]

Still upgrading tests