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tcg: Optimize past conditional branches

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We already register allocate through extended basic blocks,
optimize through extended basic blocks as well.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-10-16 19:10:42 -07:00
parent bfefdbea9e
commit d97f8f3941
1 changed files with 5 additions and 3 deletions
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8
tcg/optimize.c
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@ -688,12 +688,14 @@ static void finish_folding(OptContext *ctx, TCGOp *op)
int i, nb_oargs;
/*
* For an opcode that ends a BB, reset all temp data.
* We do no cross-BB optimization.
* We only optimize extended basic blocks. If the opcode ends a BB
* and is not a conditional branch, reset all temp data.
*/
if (def->flags & TCG_OPF_BB_END) {
memset(&ctx->temps_used, 0, sizeof(ctx->temps_used));
ctx->prev_mb = NULL;
if (!(def->flags & TCG_OPF_COND_BRANCH)) {
memset(&ctx->temps_used, 0, sizeof(ctx->temps_used));
}
return;
}