[llvm] [SimplifyLibCalls] fdim constant fold (PR #109235)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,20 @@
+; RUN: opt %s -passes=instcombine -S -mtriple=i386-pc-mingw32 | FileCheck %s --check-prefixes=CHECK,MINGW32
+
+define double @fdim_double() {
+; CHECK-LABEL: define double @fdim_double() {
+; MINGW32:    ret double 2.500000e+00
+;
+  %dim = call double @fdim(double 10.5, double 8.0)
+  ret double %dim
+}
+
+define float @fdim_float() {
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arsenm wrote:

Yes, the call should remain 

https://github.com/llvm/llvm-project/pull/109235