Signed-off-by: Paolo Bonzini <[email protected]>
---
tcg/i386/tcg-target.c.inc | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/tcg/i386/tcg-target.c.inc b/tcg/i386/tcg-target.c.inc
index a83f8aab304..4e9f372d4fd 100644
--- a/tcg/i386/tcg-target.c.inc
+++ b/tcg/i386/tcg-target.c.inc
@@ -1332,7 +1332,11 @@ static void tgen_arithi(TCGContext *s, int c, int r0,
return;
}
- if (c == ARITH_AND) {
+ if ((c == ARITH_ADD || c == ARITH_SUB) && val == 128) {
+ /* Facilitate using an 8-bit immediate. */
+ c ^= ARITH_ADD ^ ARITH_SUB;
+ val = -128;
+ } else if (c == ARITH_AND) {
if (TCG_TARGET_REG_BITS == 64) {
if (val == 0xffffffffu) {
tcg_out_ext32u(s, r0, r0);
--
2.43.0
