ConstantFold, InstSimplify: undef >>a x can be either -1 or 0, choose 0

[oota-llvm.git] / test / Transforms / InstCombine / 2008-01-06-BitCastAttributes.ll

diff --git a/test/Transforms/InstCombine/2008-01-06-BitCastAttributes.ll b/test/Transforms/InstCombine/2008-01-06-BitCastAttributes.ll
index 23b606779e66c4939eafa05ea11beae457bcab58..22c078250ece702d0a389805fc470d1e2162c2d5 100644 (file)
--- a/test/Transforms/InstCombine/2008-01-06-BitCastAttributes.ll
+++ b/test/Transforms/InstCombine/2008-01-06-BitCastAttributes.ll
@@ -1,23 +1,30 @@
 ; Ignore stderr, we expect warnings there
-; RUN: opt < %s -instcombine 2> /dev/null -S | not grep bitcast
+; RUN: opt < %s -instcombine 2> /dev/null -S | FileCheck %s
+
+; CHECK-NOT: bitcast
 
 define void @a() {
-       ret void
+  ret void
 }
 
 define signext i32 @b(i32* inreg  %x)   {
-       ret i32 0
+  ret i32 0
 }
 
 define void @c(...) {
-       ret void
+  ret void
 }
 
 define void @g(i32* %y) {
-       call void bitcast (void ()* @a to void (i32*)*)( i32* noalias  %y )
-       call <2 x i32> bitcast (i32 (i32*)* @b to <2 x i32> (i32*)*)( i32* inreg  null )                ; <<2 x i32>>:1 [#uses=0]
+; CHECK-LABEL: @g(
+; CHECK: call i64 bitcast (i32 (i32*)* @b to i64 (i32)*)(i32 0)
        %x = call i64 bitcast (i32 (i32*)* @b to i64 (i32)*)( i32 0 )           ; <i64> [#uses=0]
-       call void bitcast (void (...)* @c to void (i32)*)( i32 0 )
-       call void bitcast (void (...)* @c to void (i32)*)( i32 zeroext  0 )
-       ret void
+
+; The rest should not have bitcasts remaining
+; CHECK-NOT: bitcast
+  call void bitcast (void ()* @a to void (i32*)*)( i32* noalias  %y )
+  call <2 x i32> bitcast (i32 (i32*)* @b to <2 x i32> (i32*)*)( i32* inreg  null )             ; <<2 x i32>>:1 [#uses=0]
+  call void bitcast (void (...)* @c to void (i32)*)( i32 0 )
+  call void bitcast (void (...)* @c to void (i32)*)( i32 zeroext  0 )
+  ret void
 }