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author | Richard Henderson <richard.henderson@linaro.org> | 2021-08-24 11:58:12 -0700 |
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committer | Richard Henderson <richard.henderson@linaro.org> | 2021-10-27 17:11:22 -0700 |
commit | 09bacdc2632581cafd2878d91d62ba69dc7574f0 (patch) | |
tree | 6b86c594e5f331da74cbe7ace45c585c9702f758 /tcg/optimize.c | |
parent | 30dd0bfeb5385342a7f216e661d9b69f6ec7182e (diff) | |
download | qemu-09bacdc2632581cafd2878d91d62ba69dc7574f0.zip qemu-09bacdc2632581cafd2878d91d62ba69dc7574f0.tar.gz qemu-09bacdc2632581cafd2878d91d62ba69dc7574f0.tar.bz2 |
tcg/optimize: Split out fold_bswap
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg/optimize.c')
-rw-r--r-- | tcg/optimize.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/tcg/optimize.c b/tcg/optimize.c index dd65f1a..5374c23 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -841,6 +841,17 @@ static bool fold_brcond2(OptContext *ctx, TCGOp *op) return false; } +static bool fold_bswap(OptContext *ctx, TCGOp *op) +{ + if (arg_is_const(op->args[1])) { + uint64_t t = arg_info(op->args[1])->val; + + t = do_constant_folding(op->opc, t, op->args[2]); + return tcg_opt_gen_movi(ctx, op, op->args[0], t); + } + return false; +} + static bool fold_call(OptContext *ctx, TCGOp *op) { TCGContext *s = ctx->tcg; @@ -1742,17 +1753,6 @@ void tcg_optimize(TCGContext *s) } break; - CASE_OP_32_64(bswap16): - CASE_OP_32_64(bswap32): - case INDEX_op_bswap64_i64: - if (arg_is_const(op->args[1])) { - tmp = do_constant_folding(opc, arg_info(op->args[1])->val, - op->args[2]); - tcg_opt_gen_movi(&ctx, op, op->args[0], tmp); - continue; - } - break; - default: break; @@ -1777,6 +1777,11 @@ void tcg_optimize(TCGContext *s) case INDEX_op_brcond2_i32: done = fold_brcond2(&ctx, op); break; + CASE_OP_32_64(bswap16): + CASE_OP_32_64(bswap32): + case INDEX_op_bswap64_i64: + done = fold_bswap(&ctx, op); + break; CASE_OP_32_64(clz): CASE_OP_32_64(ctz): done = fold_count_zeros(&ctx, op); |