[llvm] X86DiscriminateMemOps: insert debug info when missing
Reviewers: davidxl
Reviewed By: davidxl
Subscribers: aprantl, hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D61735
llvm-svn: 360396
diff --git a/llvm/lib/Target/X86/X86DiscriminateMemOps.cpp b/llvm/lib/Target/X86/X86DiscriminateMemOps.cpp
index 2227189..7589dca 100644
--- a/llvm/lib/Target/X86/X86DiscriminateMemOps.cpp
+++ b/llvm/lib/Target/X86/X86DiscriminateMemOps.cpp
@@ -115,14 +115,15 @@
if (X86II::getMemoryOperandNo(MI.getDesc().TSFlags) < 0)
continue;
const DILocation *DI = MI.getDebugLoc();
- if (!DI) {
+ bool HasDebug = DI;
+ if (!HasDebug) {
DI = ReferenceDI;
}
Location L = diToLocation(DI);
DenseSet<unsigned> &Set = Seen[L];
const std::pair<DenseSet<unsigned>::iterator, bool> TryInsert =
Set.insert(DI->getBaseDiscriminator());
- if (!TryInsert.second) {
+ if (!TryInsert.second || !HasDebug) {
unsigned BF, DF, CI = 0;
DILocation::decodeDiscriminator(DI->getDiscriminator(), BF, DF, CI);
Optional<unsigned> EncodedDiscriminator = DILocation::encodeDiscriminator(