Fixed a bug in the ExecutionDependencyFix pass that caused dependencies to not propagate through implicit defs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165102 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/ExecutionDepsFix.cpp b/lib/CodeGen/ExecutionDepsFix.cpp
index fee8e47..2311842 100644
--- a/lib/CodeGen/ExecutionDepsFix.cpp
+++ b/lib/CodeGen/ExecutionDepsFix.cpp
@@ -626,9 +626,12 @@
}
dv->Instrs.push_back(mi);
- // Finally set all defs and non-collapsed uses to dv.
- for (unsigned i = 0, e = mi->getDesc().getNumOperands(); i != e; ++i) {
- MachineOperand &mo = mi->getOperand(i);
+ // Finally set all defs and non-collapsed uses to dv. We must iterate through
+ // all the operators, including imp-def ones.
+ for (MachineInstr::mop_iterator ii = mi->operands_begin(),
+ ee = mi->operands_end();
+ ii != ee; ++ii) {
+ MachineOperand &mo = *ii;
if (!mo.isReg()) continue;
int rx = regIndex(mo.getReg());
if (rx < 0) continue;