[llvm] [AMDGPU] SILowerI1Copies: clear kill flags on COPY (PR #65883)

[Carl Ritson via llvm-commits]

================
@@ -708,6 +708,9 @@ bool SILowerI1Copies::lowerCopiesToI1() {
             .addImm(0);
         MI.getOperand(1).setReg(TmpReg);
         SrcReg = TmpReg;
+      } else {
+        // SrcReg needs to be live beyond copy.
+        MI.clearKillInfo();
----------------
perlfu wrote:

Done

https://github.com/llvm/llvm-project/pull/65883