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| author | Chris Lattner <sabre@nondot.org> | 2009-04-12 07:51:14 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-04-12 07:51:14 +0000 |
| commit | 8d57b778b5f57295ac9aac2e1ad1434d9ac2bcc4 (patch) | |
| tree | 0fd9112c463b5be873bd8a70250ae01fc8358910 /test/CodeGen/X86/2009-04-12-FastIselOverflowCrash.ll | |
| parent | 36e3946ac2f30a0bda66538ef2b974b1c8fbdc97 (diff) | |
| download | llvm-8d57b778b5f57295ac9aac2e1ad1434d9ac2bcc4.tar.gz llvm-8d57b778b5f57295ac9aac2e1ad1434d9ac2bcc4.tar.bz2 llvm-8d57b778b5f57295ac9aac2e1ad1434d9ac2bcc4.tar.xz | |
fix a cross-block fastisel crash handling overflow intrinsics.
See comment for details. This fixes rdar://6772169
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68890 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/2009-04-12-FastIselOverflowCrash.ll')
| -rw-r--r-- | test/CodeGen/X86/2009-04-12-FastIselOverflowCrash.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2009-04-12-FastIselOverflowCrash.ll b/test/CodeGen/X86/2009-04-12-FastIselOverflowCrash.ll new file mode 100644 index 0000000000..bf1c8df377 --- /dev/null +++ b/test/CodeGen/X86/2009-04-12-FastIselOverflowCrash.ll @@ -0,0 +1,21 @@ +; RUN: llvm-as < %s | llc -fast-isel +; radr://6772169 +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" +target triple = "x86_64-apple-darwin10" + type { i32, i1 } ; type %0 + +declare %0 @llvm.sadd.with.overflow.i32(i32, i32) nounwind + +define fastcc i32 @test() nounwind { +entry: + %tmp1 = call %0 @llvm.sadd.with.overflow.i32(i32 1, i32 0) + %tmp2 = extractvalue %0 %tmp1, 1 + br i1 %tmp2, label %.backedge, label %BB3 + +BB3: + %tmp4 = extractvalue %0 %tmp1, 0 + br label %.backedge + +.backedge: + ret i32 0 +} |