New testcase for a latent bug in instcombine that I have been chasing for

1.5 days :( llvm-svn: 16545
2004-09-28 17:50:05 +00:00 · 2004-09-28 17:50:05 +00:00 · 64ee11511f
parent 5753883dc0
commit 64ee11511f
1 changed files with 9 additions and 0 deletions
--- a/llvm/test/Regression/Transforms/InstCombine/2004-09-28-BadShiftAndSetCC.llx
+++ b/llvm/test/Regression/Transforms/InstCombine/2004-09-28-BadShiftAndSetCC.llx
@ -0,0 +1,9 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep -- -65536
+
+bool %test(int %tmp.124) {
+        %tmp.125 = shl int %tmp.124, ubyte 8
+        %tmp.126.mask = and int %tmp.125, -16777216             ; <int> [#uses=1]
+        %tmp.128 = seteq int %tmp.126.mask, 167772160           ; <bool> [#uses=1]
+        ret bool %tmp.128
+}
+