diff options
| author | Sanjay Patel <spatel@rotateright.com> | 2017-06-23 18:42:15 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2017-06-23 18:42:15 +0000 |
| commit | 243c5c12f5b579a3d316dadffe0d238aa8f8f658 (patch) | |
| tree | e23ff533149bfc497a9eba624da86f986cb5b5c8 /test | |
| parent | 34c8eeb7921900c4edbca9e3b67d63b8a9199299 (diff) | |
[x86] fix value types for SBB transform (PR33560)
I'm not sure yet why this wouldn't fail in the simple case,
but clearly I used the wrong value type with:
https://reviews.llvm.org/rL306040
...and the bug manifests with:
https://bugs.llvm.org/show_bug.cgi?id=33560
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@306139 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/sbb.ll | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/test/CodeGen/X86/sbb.ll b/test/CodeGen/X86/sbb.ll index 409af00d3b2..bc00fc7c66a 100644 --- a/test/CodeGen/X86/sbb.ll +++ b/test/CodeGen/X86/sbb.ll @@ -111,3 +111,28 @@ define i8 @i8_select_neg1_or_0_commuted_as_math(i8 %x) { ret i8 %add } +; Make sure we're creating nodes with the right value types. This would crash. +; https://bugs.llvm.org/show_bug.cgi?id=33560 + +define void @PR33560(i8 %x, i64 %y) { +; CHECK-LABEL: PR33560: +; CHECK: # BB#0: # %entry +; CHECK-NEXT: negb %dil +; CHECK-NEXT: sbbq %rax, %rax +; CHECK-NEXT: cmpq %rsi, %rax +; CHECK-NEXT: retq +entry: + %cmp1 = icmp eq i8 %x, 0 + %ext = zext i1 %cmp1 to i64 + %add = add i64 %ext, -1 + %cmp2 = icmp eq i64 %add, %y + br i1 %cmp2, label %end, label %else + +else: + %tmp7 = zext i1 %cmp1 to i8 + br label %end + +end: + ret void +} + |