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-rw-r--r--llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp b/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp
index bc4547c996f..427bdd9cf51 100644
--- a/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp
+++ b/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp
@@ -2333,6 +2333,8 @@ bool llvm::tryFoldSPUpdateIntoPushPop(const ARMSubtarget &Subtarget,
for (int CurRegEnc = FirstRegEnc - 1; CurRegEnc >= 0 && RegsNeeded;
--CurRegEnc) {
unsigned CurReg = RegClass->getRegister(CurRegEnc);
+ if (IsT1PushPop && CurReg > ARM::R7)
+ continue;
if (!IsPop) {
// Pushing any register is completely harmless, mark the register involved
// as undef since we don't care about its value and must not restore it
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