New test case. DAGCombiner should be able to fold -sin(-x)

in -enable-unsafe-fp-math mode. llvm-svn: 37841
2007-07-02 15:43:20 +00:00 · 2007-07-02 15:43:20 +00:00 · 11a4008a59
parent 32c3c19bed
commit 11a4008a59
1 changed files with 12 additions and 0 deletions
--- a/llvm/test/CodeGen/X86/negative-sin.ll
+++ b/llvm/test/CodeGen/X86/negative-sin.ll
@ -0,0 +1,12 @@
+; RUN: llvm-as < %s | llc -enable-unsafe-fp-math -march=x86-64 | \
+; RUN:   not egrep {addsd|subsd|xor}
+
+declare double @sin(double %f)
+
+define double @foo(double %e)
+{
+  %f = sub double 0.0, %e
+  %g = call double @sin(double %f)
+  %h = sub double 0.0, %g
+  ret double %h
+}