llvm-6502/test/Transforms/DeadStoreElimination/crash.ll
Chris Lattner 40ef630a46 fix PR4815: some cases where DeleteDeadInstruction can delete
the instruction BBI points to.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80768 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-02 06:31:02 +00:00

27 lines
988 B
LLVM

; RUN: llvm-as < %s | opt -dse | llvm-dis
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin10.0"
@g80 = external global i8 ; <i8*> [#uses=3]
declare signext i8 @foo(i8 signext, i8 signext) nounwind readnone ssp
declare i32 @func68(i32) nounwind readonly ssp
; PR4815
define void @test1(i32 %int32p54) noreturn nounwind ssp {
entry:
br label %bb
bb: ; preds = %bb, %entry
%storemerge = phi i8 [ %2, %bb ], [ 1, %entry ] ; <i8> [#uses=1]
store i8 %storemerge, i8* @g80
%0 = tail call i32 @func68(i32 1) nounwind ssp ; <i32> [#uses=1]
%1 = trunc i32 %0 to i8 ; <i8> [#uses=1]
store i8 %1, i8* @g80, align 1
store i8 undef, i8* @g80, align 1
%2 = tail call signext i8 @foo(i8 signext undef, i8 signext 1) nounwind ; <i8> [#uses=1]
br label %bb
}