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Fix #align_stack redundancy checks

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gingerBill
2026-08-19 14:52:35 +01:00
parent 5e165d2393
commit 2873e323c7
1 changed files with 5 additions and 1 deletions
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6
src/check_asm.cpp
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@@ -1074,8 +1074,12 @@ gb_internal void check_mnemonic(AsmCtx *asm_ctx, CheckerContext *ctx, Entity *tm
tmpl_entity->AsmTemplate.has_observable_side_effect |= clobber.implies_side_effects() != 0;
tmpl_entity->AsmTemplate.has_observable_side_effect |= clobber.writes_mem;
// #align_stack only matters if the body makes a call (which requires the stack
// aligned at the call boundary) or manipulates RSP directly. Plain memory access
// through a parameter pointer does NOT require stack realignment, so
// implies_clobber_memory() is intentionally NOT used here.
if ((cast(u16)clobber.side_effects & asm_ctx->SideEffectFlag_CONTROL) != 0 ||
clobber.implies_clobber_memory()) {
(cast(u16)clobber.implicit_wr & asm_ctx->ClobberReg_RSP) != 0) {
asm_acc->saw_call_or_mem = true;
}