}
assert((&*It) == &DefMI && "DefMI is missing");
- // If DefMI also uses the register to be forwarded, we can only forward it
+ // If DefMI also defines the register to be forwarded, we can only forward it
// if DefMI is being erased.
- if (DefMI.readsRegister(Reg, &getRegisterInfo()))
+ if (DefMI.modifiesRegister(Reg, &getRegisterInfo()))
return KillDefMI;
return true;
--- /dev/null
+# RUN: llc -mtriple=powerpc64le--linux-gnu -stop-after ppc-pre-emit-peephole %s -o - -verify-machineinstrs | FileCheck %s
+
+---
+# ADDI8 + STFSX can be converted to ADDI8 + STFS even ADDI8 can not be erased.
+name: testFwdOperandKilledAfter
+# CHECK: name: testFwdOperandKilledAfter
+tracksRegLiveness: true
+body: |
+ bb.0.entry:
+ liveins: $x3, $f1, $x5
+ $x3 = ADDI8 $x5, 100
+ STFSX killed $f1, $zero8, $x3
+ ; CHECK: STFS killed $f1, 100, $x5
+ STD killed $x3, killed $x5, 100
+ ; CHECK: STD killed $x3, killed $x5, 100
+ BLR8 implicit $lr8, implicit $rm
+...