diff options
| author | Peter Collingbourne <peter@pcc.me.uk> | 2012-05-20 18:36:15 +0000 |
|---|---|---|
| committer | Peter Collingbourne <peter@pcc.me.uk> | 2012-05-20 18:36:15 +0000 |
| commit | 92d63ccfc7d86d39bc0b806bf7e9fac13dd2d7b5 (patch) | |
| tree | dd54a97aa7ece95c867f6687f03d9fa88361fc6a /test/CodeGen/X86/pr12889.ll | |
| parent | 5875c33746a86c4596b3039768889680ff4f5752 (diff) | |
| download | llvm-92d63ccfc7d86d39bc0b806bf7e9fac13dd2d7b5.tar.gz llvm-92d63ccfc7d86d39bc0b806bf7e9fac13dd2d7b5.tar.bz2 llvm-92d63ccfc7d86d39bc0b806bf7e9fac13dd2d7b5.tar.xz | |
When legalising shifts, do not pre-build a list of operands which
may be RAUW'd by the recursive call to LegalizeOps; instead, retrieve
the other operands when calling UpdateNodeOperands. Fixes PR12889.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157162 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/pr12889.ll')
| -rw-r--r-- | test/CodeGen/X86/pr12889.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/CodeGen/X86/pr12889.ll b/test/CodeGen/X86/pr12889.ll new file mode 100644 index 0000000000..331d8f907d --- /dev/null +++ b/test/CodeGen/X86/pr12889.ll @@ -0,0 +1,18 @@ +; RUN: llc < %s -march=x86 +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +@c0 = common global i8 0, align 1 + +define void @func() nounwind uwtable { +entry: + %0 = load i8* @c0, align 1, !tbaa !0 + %tobool = icmp ne i8 %0, 0 + %conv = zext i1 %tobool to i8 + %storemerge = shl nuw nsw i8 %conv, %conv + store i8 %storemerge, i8* @c0, align 1 + ret void +} + +!0 = metadata !{metadata !"omnipotent char", metadata !1} +!1 = metadata !{metadata !"Simple C/C++ TBAA"} |