Move InstCombine's knowledge of fdiv to SimplifyInstruction().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124534 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 17 insertions, 0 deletions

diff --git a/test/Transforms/InstSimplify/fdiv.ll b/test/Transforms/InstSimplify/fdiv.ll
new file mode 100644
index 0000000000..9d85154b24
--- /dev/null
+++ b/test/Transforms/InstSimplify/fdiv.ll
@@ -0,0 +1,17 @@
+; RUN: opt < %s -instsimplify -S | FileCheck %s
+
+define double @fdiv_of_undef(double %X) {
+; CHECK: @fdiv_of_undef
+; undef / X -> undef
+  %r = fdiv double undef, %X
+  ret double %r
+; CHECK: ret double undef
+}
+
+define double @fdiv_by_undef(double %X) {
+; CHECK: @fdiv_by_undef
+; X / undef -> undef
+  %r = fdiv double %X, undef
+  ret double %r
+; CHECK: ret double undef
+}