llvm-6502/test/Transforms/DeadStoreElimination/crash.ll
Chris Lattner ab9530ee5d implement a FIXME: limit the depth that DecomposeGEPExpression goes the same
way that getUnderlyingObject does it. 

This fixes the 'DecomposeGEPExpression and getUnderlyingObject disagree!' 
assertion on sqlite3.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90038 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-28 15:12:41 +00:00

44 lines
1.8 KiB
LLVM

; RUN: opt < %s -dse -S
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
}
define fastcc i32 @test2() nounwind ssp {
bb14: ; preds = %bb4
%0 = bitcast i8* undef to i8** ; <i8**> [#uses=1]
%1 = getelementptr inbounds i8** %0, i64 undef ; <i8**> [#uses=1]
%2 = bitcast i8** %1 to i16* ; <i16*> [#uses=2]
%3 = getelementptr inbounds i16* %2, i64 undef ; <i16*> [#uses=1]
%4 = bitcast i16* %3 to i8* ; <i8*> [#uses=1]
%5 = getelementptr inbounds i8* %4, i64 undef ; <i8*> [#uses=1]
%6 = getelementptr inbounds i16* %2, i64 undef ; <i16*> [#uses=1]
store i16 undef, i16* %6, align 2
%7 = getelementptr inbounds i8* %5, i64 undef ; <i8*> [#uses=1]
call void @llvm.memcpy.i64(i8* %7, i8* undef, i64 undef, i32 1) nounwind
unreachable
}
declare void @llvm.memcpy.i64(i8* nocapture, i8* nocapture, i64, i32) nounwind