Add a testcase to make sure that we don't emit two fneg instructions back

to back for certain fsel instructions. llvm-svn: 21176
2005-04-09 09:30:09 +00:00 · 2005-04-09 09:30:09 +00:00 · 7d3e44fb12
parent 968e44a900
commit 7d3e44fb12
1 changed files with 8 additions and 0 deletions
--- a/llvm/test/Regression/CodeGen/PowerPC/fnegsel.ll
+++ b/llvm/test/Regression/CodeGen/PowerPC/fnegsel.ll
@ -0,0 +1,8 @@
+; RUN: llvm-as < %s | llc -march=ppc32 -enable-ppc-pattern-isel | not grep fneg
+
+double %test_fneg_sel(double %A, double %B, double %C) {
+    %D = sub double -0.0, %A
+    %Cond = setgt double %D, -0.0
+    %E = select bool %Cond, double %B, double %C
+	ret double %E
+}