[llvm] AMDGPU: Simplify DS atomicrmw fadd handling (PR #89468)

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git-clang-format --diff f433c3b38005701fdc219ae8c01e6af1b8bedba9 93186007dfd527c98047831777160f4634c67d7d -- llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp llvm/lib/Target/AMDGPU/GCNSubtarget.h llvm/lib/Target/AMDGPU/SIISelLowering.cpp
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View the diff from clang-format here.
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diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
index 9f766fda65..12b7f05c44 100644
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -16051,8 +16051,8 @@ SITargetLowering::shouldExpandAtomicRMWInIR(AtomicRMWInst *RMW) const {
 
     // TODO: Handle REGION_ADDRESS
     if (AS == AMDGPUAS::LOCAL_ADDRESS) {
-      // DS F32 FP atomics do respect the denormal mode, but the rounding mode is
-      // fixed to round-to-nearest-even.
+      // DS F32 FP atomics do respect the denormal mode, but the rounding mode
+      // is fixed to round-to-nearest-even.
       //
       // F64 / PK_F16 / PK_BF16 never flush and are also fixed to
       // round-to-nearest-even.
@@ -16067,8 +16067,8 @@ SITargetLowering::shouldExpandAtomicRMWInIR(AtomicRMWInst *RMW) const {
 
       if (Ty->isDoubleTy()) {
         // Ignores denormal mode, but we don't consider flushing mandatory.
-        return Subtarget->hasLDSFPAtomicAddF64() ?
-          AtomicExpansionKind::None : AtomicExpansionKind::CmpXChg;
+        return Subtarget->hasLDSFPAtomicAddF64() ? AtomicExpansionKind::None
+                                                 : AtomicExpansionKind::CmpXChg;
       }
 
       // TODO: Handle v2f16/v2bf16 cases for gfx940

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https://github.com/llvm/llvm-project/pull/89468