[llvm] a10fc16 - [StackSafety,NFC] Fix use of CallBase API
Vitaly Buka via llvm-commits
llvm-commits at lists.llvm.org
Thu Jun 11 16:11:39 PDT 2020
Author: Vitaly Buka
Date: 2020-06-11T16:11:30-07:00
New Revision: a10fc165f58dea12442ade6712370638cdce5c14
URL: https://github.com/llvm/llvm-project/commit/a10fc165f58dea12442ade6712370638cdce5c14
DIFF: https://github.com/llvm/llvm-project/commit/a10fc165f58dea12442ade6712370638cdce5c14.diff
LOG: [StackSafety,NFC] Fix use of CallBase API
Code does not need iterate arguments and can get ArgNo from
CallBase::getArgOperandNo.
Added:
Modified:
llvm/lib/Analysis/StackSafetyAnalysis.cpp
Removed:
################################################################################
diff --git a/llvm/lib/Analysis/StackSafetyAnalysis.cpp b/llvm/lib/Analysis/StackSafetyAnalysis.cpp
index e3bd26374abc..f2c2bfd3b1a9 100644
--- a/llvm/lib/Analysis/StackSafetyAnalysis.cpp
+++ b/llvm/lib/Analysis/StackSafetyAnalysis.cpp
@@ -327,8 +327,6 @@ bool StackSafetyLocalAnalysis::analyzeAllUses(Value *Ptr,
case Instruction::Call:
case Instruction::Invoke: {
- const auto &CB = cast<CallBase>(*I);
-
if (I->isLifetimeStartOrEnd())
break;
@@ -337,6 +335,12 @@ bool StackSafetyLocalAnalysis::analyzeAllUses(Value *Ptr,
break;
}
+ const auto &CB = cast<CallBase>(*I);
+ if (!CB.isArgOperand(&UI)) {
+ US.updateRange(UnknownRange);
+ return false;
+ }
+
// FIXME: consult devirt?
// Do not follow aliases, otherwise we could inadvertently follow
// dso_preemptable aliases or aliases with interposable linkage.
@@ -348,19 +352,8 @@ bool StackSafetyLocalAnalysis::analyzeAllUses(Value *Ptr,
}
assert(isa<Function>(Callee) || isa<GlobalAlias>(Callee));
-
- int Found = 0;
- for (size_t ArgNo = 0; ArgNo < CB.getNumArgOperands(); ++ArgNo) {
- if (CB.getArgOperand(ArgNo) == V) {
- ++Found;
- US.Calls.emplace_back(Callee, ArgNo, offsetFrom(UI, Ptr));
- }
- }
- if (!Found) {
- US.updateRange(UnknownRange);
- return false;
- }
-
+ US.Calls.emplace_back(Callee, CB.getArgOperandNo(&UI),
+ offsetFrom(UI, Ptr));
break;
}
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