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-rw-r--r--llvm/lib/Target/PowerPC/PPCMIPeephole.cpp8
1 files changed, 5 insertions, 3 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCMIPeephole.cpp b/llvm/lib/Target/PowerPC/PPCMIPeephole.cpp
index 3360e74db99..ee62bb3b500 100644
--- a/llvm/lib/Target/PowerPC/PPCMIPeephole.cpp
+++ b/llvm/lib/Target/PowerPC/PPCMIPeephole.cpp
@@ -201,11 +201,13 @@ bool PPCMIPeephole::simplifyCode(void) {
// Splat fed by another splat - switch the output of the first
// and remove the second.
if (SameOpcode) {
- DefMI->getOperand(0).setReg(MI.getOperand(0).getReg());
+ DEBUG(dbgs() << "Changing redundant splat to a copy: ");
+ DEBUG(MI.dump());
+ BuildMI(MBB, &MI, MI.getDebugLoc(), TII->get(PPC::COPY),
+ MI.getOperand(0).getReg())
+ .addOperand(MI.getOperand(OpNo));
ToErase = &MI;
Simplified = true;
- DEBUG(dbgs() << "Removing redundant splat: ");
- DEBUG(MI.dump());
}
// Splat fed by a shift. Usually when we align value to splat into
// vector element zero.
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