fix ShrinkDemandedOps to not leave dead nodes around,
fixing PR6607
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98512 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/crash.ll b/test/CodeGen/X86/crash.ll
index b75d265..cfa1270 100644
--- a/test/CodeGen/X86/crash.ll
+++ b/test/CodeGen/X86/crash.ll
@@ -71,3 +71,22 @@
}
declare i32 @safe(i32)
+
+; PR6607
+define fastcc void @test5(i32 %FUNC) nounwind {
+foo:
+ %0 = load i8* undef, align 1 ; <i8> [#uses=3]
+ %1 = sext i8 %0 to i32 ; <i32> [#uses=2]
+ %2 = zext i8 %0 to i32 ; <i32> [#uses=1]
+ %tmp1.i5037 = urem i32 %2, 10 ; <i32> [#uses=1]
+ %tmp.i5038 = icmp ugt i32 %tmp1.i5037, 15 ; <i1> [#uses=1]
+ %3 = zext i1 %tmp.i5038 to i8 ; <i8> [#uses=1]
+ %4 = icmp slt i8 %0, %3 ; <i1> [#uses=1]
+ %5 = add nsw i32 %1, 256 ; <i32> [#uses=1]
+ %storemerge.i.i57 = select i1 %4, i32 %5, i32 %1 ; <i32> [#uses=1]
+ %6 = shl i32 %storemerge.i.i57, 16 ; <i32> [#uses=1]
+ %7 = sdiv i32 %6, -256 ; <i32> [#uses=1]
+ %8 = trunc i32 %7 to i8 ; <i8> [#uses=1]
+ store i8 %8, i8* undef, align 1
+ ret void
+}