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[ARM] Fix null pointer dereference in CodeGen/ARM/Windows/stack-protector-msvc.ll.test after D64292/r365283 

CLI.CS may not be set.

llvm-svn: 365299
This commit is contained in:
Fangrui Song 2019-07-08 08:43:31 +00:00
parent 0464e07c8f
commit 7d63be09b6
1 changed files with 8 additions and 6 deletions
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14
llvm/lib/Target/ARM/ARMISelLowering.cpp
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@ -1981,12 +1981,14 @@ ARMTargetLowering::LowerCall(TargetLowering::CallLoweringInfo &CLI,
// more times in this block, we can improve codesize by calling indirectly
// as BLXr has a 16-bit encoding.
auto *GV = cast<GlobalAddressSDNode>(Callee)->getGlobal();
auto *BB = CLI.CS.getParent();
PreferIndirect =
Subtarget->isThumb() && Subtarget->hasMinSize() &&
count_if(GV->users(), [&BB](const User *U) {
return isa<Instruction>(U) && cast<Instruction>(U)->getParent() == BB;
}) > 2;
if (CLI.CS) {
auto *BB = CLI.CS.getParent();
PreferIndirect = Subtarget->isThumb() && Subtarget->hasMinSize() &&
count_if(GV->users(), [&BB](const User *U) {
return isa<Instruction>(U) &&
cast<Instruction>(U)->getParent() == BB;
}) > 2;
}
}
if (isTailCall) {
// Check if it's really possible to do a tail call.