diff options
| -rw-r--r-- | tcg/optimize.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/tcg/optimize.c b/tcg/optimize.c index abe016a28a..c8ae50bc91 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -434,7 +434,10 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, CASE_OP_32_64(eqv): CASE_OP_32_64(nand): CASE_OP_32_64(nor): - if (temps[args[1]].state == TCG_TEMP_CONST) { + /* Prefer the constant in second argument, and then the form + op a, a, b, which is better handled on non-RISC hosts. */ + if (temps[args[1]].state == TCG_TEMP_CONST || (args[0] == args[2] + && temps[args[2]].state != TCG_TEMP_CONST)) { tmp = args[1]; args[1] = args[2]; args[2] = tmp; |