[AMDGPU] Remove dead code in SIISelLowering (NFC)

[npmiller]

This return is dead code as the return just above will always be taken.

[llvmbot]

@llvm/pr-subscribers-backend-amdgpu

Author: Nicolas Miller (npmiller)

Changes

This return is dead code as the return just above will always be taken.

---

Full diff: https://github.com/llvm/llvm-project/pull/108198.diff

1 Files Affected:

• (modified) llvm/lib/Target/AMDGPU/SIISelLowering.cpp (-3)

diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
index 736f714ac1a77c..fb553314919096 100644
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -16207,9 +16207,6 @@ SITargetLowering::shouldExpandAtomicRMWInIR(AtomicRMWInst *RMW) const {
     return isAtomicRMWLegalXChgTy(RMW)
                ? TargetLowering::AtomicExpansionKind::None
                : TargetLowering::AtomicExpansionKind::CmpXChg;
-
-    // PCIe supports add and xchg for system atomics.
-    return atomicSupportedIfLegalIntType(RMW);
   }
   case AtomicRMWInst::Add:
   case AtomicRMWInst::And:

[arsenm]

I'd prefer to leave this as-is. The comment is still significant and these paths will deviate in a patch I'm working on

[arsenm]

I'd prefer to leave this as-is. The comment is still significant and these paths will deviate in a patch I'm working on

Oh wait, I see it now