While these are rare from code that's been through the optimizer,
it's not uncommon within the tcg backend.
Signed-off-by: Richard Henderson <r...@twiddle.net>
---
tcg/ppc/tcg-target.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/tcg/ppc/tcg-target.c b/tcg/ppc/tcg-target.c
index 9a73d06..b0fbc54 100644
--- a/tcg/ppc/tcg-target.c
+++ b/tcg/ppc/tcg-target.c
@@ -450,7 +450,9 @@ static const uint32_t tcg_to_bc[] = {
static void tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg)
{
- tcg_out32 (s, OR | SAB (arg, ret, arg));
+ if (ret != arg) {
+ tcg_out32(s, OR | SAB(arg, ret, arg));
+ }
}
static void tcg_out_movi(TCGContext *s, TCGType type,
--
1.8.3.1
