From 8d57b778b5f57295ac9aac2e1ad1434d9ac2bcc4 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sun, 12 Apr 2009 07:51:14 +0000 Subject: 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 --- .../CodeGen/X86/2009-04-12-FastIselOverflowCrash.ll | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 test/CodeGen/X86/2009-04-12-FastIselOverflowCrash.ll (limited to 'test/CodeGen/X86/2009-04-12-FastIselOverflowCrash.ll') 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 +} -- cgit v1.2.3