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VREG 0 is special (it's never coalesced)

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Dmitry Stogov 2023-12-21 16:01:40 +03:00
parent 415f673be5
commit a75bb8fabe
1 changed files with 2 additions and 2 deletions
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4
ir_ra.c
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@ -1615,7 +1615,7 @@ static bool ir_try_coalesce(ir_ctx *ctx, ir_ref from, ir_ref to)
} else if (from < to) {
ir_vregs_join(ctx, v1, v2);
if (f2 & IR_LIVE_INTERVAL_COALESCED) {
for (i = 0; i < ctx->insns_count; i++) {
for (i = 1; i < ctx->insns_count; i++) {
if (ctx->vregs[i] == v2) {
ctx->vregs[i] = v1;
}
@ -1626,7 +1626,7 @@ static bool ir_try_coalesce(ir_ctx *ctx, ir_ref from, ir_ref to)
} else {
ir_vregs_join(ctx, v2, v1);
if (f1 & IR_LIVE_INTERVAL_COALESCED) {
for (i = 0; i < ctx->insns_count; i++) {
for (i = 1; i < ctx->insns_count; i++) {
if (ctx->vregs[i] == v1) {
ctx->vregs[i] = v2;
}