commit 0baace53799424bd1e3cfe9068ee254fae0ca677
author Abinav Puthan Purayil <abinav.puthanpurayil@amd.com> Mon Aug 02 16:42:23 2021 +0530
committer Abinav Puthan Purayil <abinav.puthanpurayil@amd.com> Thu Sep 02 11:33:14 2021 +0530
tree ca65c689d208e30038fb637467007882010e9764
parent bc0d16969adfcd9bf5a07708b93da475e04c74a8

[DAGCombine] Add node level checks for fp-contract and fp-ninf in visitFMULForFMADistributiveCombine().

Differential Revision: https://reviews.llvm.org/D107551

llvm/test/CodeGen/AMDGPU/fma.ll

diff --git a/llvm/test/CodeGen/AMDGPU/fma.ll b/llvm/test/CodeGen/AMDGPU/fma.ll
index 6fadd91..dcf3254 100644
--- a/llvm/test/CodeGen/AMDGPU/fma.ll
+++ b/llvm/test/CodeGen/AMDGPU/fma.ll
@@ -144,3 +144,13 @@
   store float %tmp10, float addrspace(1)* %gep.out
   ret void
 }
+
+; Fold (fmul (fadd x, 1.0), y) -> (fma x, y, y) without FP specific command-line
+; options.
+; FUNC-LABEL: {{^}}fold_fmul_distributive:
+; GFX906: v_fmac_f32_e32 v0, v1, v0
+define float @fold_fmul_distributive(float %x, float %y) {
+  %fadd = fadd ninf float %y, 1.0
+  %fmul = fmul contract float %fadd, %x
+  ret float %fmul
+}