Add a test case for PR1271 (necessary, but not sufficient).

llvm-svn: 35343
2007-03-25 21:30:41 +00:00 · 2007-03-25 21:30:41 +00:00 · 726b0a7fa4
parent 52830327e9
commit 726b0a7fa4
1 changed files with 9 additions and 0 deletions
--- a/llvm/test/Transforms/InstCombine/2007-03-25-DoubleShift.ll
+++ b/llvm/test/Transforms/InstCombine/2007-03-25-DoubleShift.ll
@ -0,0 +1,9 @@
+; PR1271
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep and
+define i1 @test(i32 %tmp13) {
+entry:
+	%tmp14 = shl i32 %tmp13, 12		; <i32> [#uses=1]
+	%tmp15 = lshr i32 %tmp14, 12		; <i32> [#uses=1]
+	%res = icmp ne i32 %tmp15, 0		; <i1>:3 [#uses=1]
+        ret i1 %res
+}