[AMDGPU] fix test to survive the most basic undef constant folding
This will likely need to be changed again for anything more than:
fmul undef, undef -> undef
llvm-svn: 327034
diff --git a/llvm/test/CodeGen/AMDGPU/debug-value.ll b/llvm/test/CodeGen/AMDGPU/debug-value.ll
index 30c1342..8fa05f6 100644
--- a/llvm/test/CodeGen/AMDGPU/debug-value.ll
+++ b/llvm/test/CodeGen/AMDGPU/debug-value.ll
@@ -30,7 +30,7 @@
bb21: ; preds = %bb
%tmp22 = fmul <4 x float> %tmp18, undef
%tmp23 = fadd <4 x float> undef, %tmp22
- %tmp24 = fmul <4 x float> undef, undef
+ %tmp24 = fmul <4 x float> %tmp23, undef
br label %bb28
bb25: ; preds = %bb