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Fix scratch register pinning

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This commit is contained in:
gingerBill
2026-08-17 21:37:03 +01:00
parent a2bcf3177a
commit 77bedf9947
2 changed files with 5 additions and 4 deletions
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2
src/check_asm.cpp
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@@ -1050,6 +1050,8 @@ gb_internal void check_asm_instruction_operand(AsmCtx *asm_ctx, CheckerContext *
check_expr(ctx, operand, expr);
if (operand->mode != Addressing_Constant) {
error(expr, "Asm operands within parentheses can only compile time constants");
} else {
error(expr, "Asm operands with parentheses are not currently supported");
}
return;
case_end;

7
src/llvm_backend_asm.cpp
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@@ -92,7 +92,7 @@ struct lbAsmGenerate {
}
gbString write_operand(gbString asm_string, Array<i32> op_number, Ast *op, u32 flags) {
gbString write_operand(gbString asm_string, Array<i32> const &op_number, Ast *op, u32 flags) {
if (op->tav.mode == Addressing_Constant) {
return write_constant_operand(asm_string, op, flags);
}
@@ -387,14 +387,13 @@ struct lbAsmGenerate_amd64 : lbAsmGenerate {
array_add(&ret_types, LLVMInt8TypeInContext(ctx));
// Counted in $N even though never referenced in the body.
op_number[i] = next_op++;
op_number[i] = next_op++;
continue;
}
bool is_output = e.param_group == AsmTemplateEntityDeclParamGroup_Output;
bool is_alloc_scratch = e.param_group == AsmTemplateEntityDeclParamGroup_Scratch
&& e.kind == AsmTemplateEntityDecl_Register
&& e.pin.len == 0;
&& e.kind == AsmTemplateEntityDecl_Register;
if (!is_output && !is_alloc_scratch) {
continue;
}