mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-22 10:29:35 +00:00
In some cases, the "fail BB dominator" may be null after the BB was split (and
becomes reachable when before it wasn't). Check to make sure that it's not null before trying to use it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128434 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
a7b8c2b6a4
commit
2d930db24f
@ -221,7 +221,8 @@ bool StackProtector::InsertStackProtectors() {
|
||||
BasicBlock *NewBB = BB->splitBasicBlock(RI, "SP_return");
|
||||
if (DT && DT->isReachableFromEntry(BB)) {
|
||||
DT->addNewBlock(NewBB, BB);
|
||||
FailBBDom = DT->findNearestCommonDominator(FailBBDom, BB);
|
||||
if (FailBBDom)
|
||||
FailBBDom = DT->findNearestCommonDominator(FailBBDom, BB);
|
||||
}
|
||||
|
||||
// Remove default branch instruction to the new BB.
|
||||
|
@ -189,7 +189,7 @@ for.inc44: ; preds = %for.body
|
||||
}
|
||||
|
||||
; PR9028
|
||||
define void @f(i64 %A) nounwind {
|
||||
define void @func_60(i64 %A) nounwind {
|
||||
entry:
|
||||
%0 = zext i64 %A to i160
|
||||
%1 = shl i160 %0, 64
|
||||
@ -199,3 +199,19 @@ entry:
|
||||
store i576 %4, i576* undef, align 8
|
||||
ret void
|
||||
}
|
||||
|
||||
; <rdar://problem/9187792>
|
||||
define fastcc void @func_61() nounwind sspreq {
|
||||
entry:
|
||||
%t1 = tail call i64 @llvm.objectsize.i64(i8* undef, i1 false)
|
||||
%t2 = icmp eq i64 %t1, -1
|
||||
br i1 %t2, label %bb2, label %bb1
|
||||
|
||||
bb1:
|
||||
ret void
|
||||
|
||||
bb2:
|
||||
ret void
|
||||
}
|
||||
|
||||
declare i64 @llvm.objectsize.i64(i8*, i1) nounwind readnone
|
||||
|
Loading…
Reference in New Issue
Block a user