Recognize the identity function for division.
Suggested-by: Luis Pires <[email protected]>
Reviewed-by: Luis Pires <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Signed-off-by: Richard Henderson <[email protected]>
---
tcg/optimize.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/tcg/optimize.c b/tcg/optimize.c
index 907049fb06..f8b0709157 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -1218,7 +1218,11 @@ static bool fold_deposit(OptContext *ctx, TCGOp *op)
static bool fold_divide(OptContext *ctx, TCGOp *op)
{
- return fold_const2(ctx, op);
+ if (fold_const2(ctx, op) ||
+ fold_xi_to_x(ctx, op, 1)) {
+ return true;
+ }
+ return false;
}
static bool fold_dup(OptContext *ctx, TCGOp *op)
--
2.25.1
