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-rw-r--r--tools/llvm-mca/InstrBuilder.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/llvm-mca/InstrBuilder.cpp b/tools/llvm-mca/InstrBuilder.cpp
index dbd457196f9d..053b7b4e8175 100644
--- a/tools/llvm-mca/InstrBuilder.cpp
+++ b/tools/llvm-mca/InstrBuilder.cpp
@@ -443,6 +443,10 @@ InstrBuilder::createInstruction(const MCInst &MCI) {
// register writes implicitly clear the upper portion of a super-register.
MCIA.clearsSuperRegisters(MRI, MCI, WriteMask);
+ // Check if this is a dependency breaking instruction.
+ if (MCIA.isDependencyBreaking(STI, MCI))
+ NewIS->setDependencyBreaking();
+
// Initialize writes.
unsigned WriteIndex = 0;
for (const WriteDescriptor &WD : D.Writes) {