When expanding t2STRDi8 r, r to two stores, add kill markers correctly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88734 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
index 873a8d3..304d0ef 100644
--- a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
+++ b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
@@ -866,6 +866,13 @@
BaseReg, BaseKill, BaseUndef, OffReg, OffKill, OffUndef,
Pred, PredReg, TII, isT2);
} else {
+ if (OddReg == EvenReg && EvenDeadKill) {
+ // If the two source operands are the same, the kill marker is probably
+ // on the first one. e.g.
+ // t2STRDi8 %R5<kill>, %R5, %R9<kill>, 0, 14, %reg0
+ EvenDeadKill = false;
+ OddDeadKill = true;
+ }
InsertLDR_STR(MBB, MBBI, OffImm, isLd, dl, NewOpc,
EvenReg, EvenDeadKill, EvenUndef,
BaseReg, false, BaseUndef, OffReg, false, OffUndef,