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Check that TD isn't NULL before dereferencing it down this path.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187099 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky 2013-07-25 02:55:14 +00:00
parent 2d680824e3
commit b97b162731
2 changed files with 18 additions and 1 deletions
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2
lib/Transforms/IPO/GlobalOpt.cpp
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@ -2783,7 +2783,7 @@ bool Evaluator::EvaluateBlock(BasicBlock::iterator CurInst,
Value *Ptr = PtrArg->stripPointerCasts();
if (GlobalVariable *GV = dyn_cast<GlobalVariable>(Ptr)) {
Type *ElemTy = cast<PointerType>(GV->getType())->getElementType();
if (!Size->isAllOnesValue() &&
if (TD && !Size->isAllOnesValue() &&
Size->getValue().getLimitedValue() >=
TD->getTypeStoreSize(ElemTy)) {
Invariants.insert(GV);

17
test/Transforms/GlobalOpt/invariant-nodatalayout.ll Normal file
View File

@ -0,0 +1,17 @@
; RUN: opt -globalopt -S -o - < %s | FileCheck %s
; The check here is that it doesn't crash.
declare {}* @llvm.invariant.start(i64 %size, i8* nocapture %ptr)
@object1 = global { i32, i32 } zeroinitializer
; CHECK: @object1 = global { i32, i32 } zeroinitializer
define void @ctor1() {
%ptr = bitcast {i32, i32}* @object1 to i8*
call {}* @llvm.invariant.start(i64 4, i8* %ptr)
ret void
}
@llvm.global_ctors = appending constant
[1 x { i32, void ()* }]
[ { i32, void ()* } { i32 65535, void ()* @ctor1 } ]