new testcase

llvm-svn: 15259
2004-07-27 06:35:11 +00:00 · 2004-07-27 06:35:11 +00:00 · 0373d994a0
parent e30d3c8292
commit 0373d994a0
1 changed files with 15 additions and 0 deletions
--- a/llvm/test/Regression/Analysis/GlobalsModRef/purecse.ll
+++ b/llvm/test/Regression/Analysis/GlobalsModRef/purecse.ll
@ -0,0 +1,15 @@
+; Test that pure functions are cse'd away
+
+; RUN: llvm-as < %s | opt -globalsmodref-aa -load-vn -gcse -instcombine -adce| llvm-dis | not grep call
+
+int %pure(int %X) {
+	%Y = add int %X, 1
+	ret int %Y
+}
+
+int %test(int %X) {
+	%A = call int %pure(int %X)
+	%B = call int %pure(int %X)
+	%C = sub int %A, %B
+	ret int %C
+}