[PATCH] D60679: [LowerAtomic] Lower fadd and fsub atomicrmw instructions

[Josh Berdine via Phabricator via llvm-commits]

jberdine created this revision.
Herald added subscribers: llvm-commits, jfb.
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FAdd and FSub have recently (r351850) been added as atomicrmw
operations. This diff adds lowering cases for them to the LowerAtomic
transform.


Repository:
  rL LLVM

https://reviews.llvm.org/D60679

Files:
  lib/Transforms/Scalar/LowerAtomic.cpp


Index: lib/Transforms/Scalar/LowerAtomic.cpp
===================================================================
--- lib/Transforms/Scalar/LowerAtomic.cpp
+++ lib/Transforms/Scalar/LowerAtomic.cpp
@@ -86,6 +86,12 @@
     Res = Builder.CreateSelect(Builder.CreateICmpULT(Orig, Val),
                                Orig, Val);
     break;
+  case AtomicRMWInst::FAdd:
+    Res = Builder.CreateFAdd(Orig, Val);
+    break;
+  case AtomicRMWInst::FSub:
+    Res = Builder.CreateFSub(Orig, Val);
+    break;
   }
   Builder.CreateStore(Res, Ptr);
   RMWI->replaceAllUsesWith(Orig);


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