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riscv64: a pointer is not an integer in the FP calling convention

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kalsprite
2026-08-10 21:34:08 -07:00
parent a50660b5bb
commit aec971197a
1 changed files with 9 additions and 2 deletions
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11
src/llvm_abi.cpp
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@@ -1738,6 +1738,13 @@ namespace lbAbiRiscv64 {
}
}
// The psABI's rule is "one floating-point real and one integer (or bitfield)", and a pointer
// is not an integer. `is_register` admits pointers and keeps that meaning for its other
// callers, so the floating-point arms need their own predicate.
gb_internal bool is_int_member(LLVMTypeRef type) {
return LLVMGetTypeKind(type) == LLVMIntegerTypeKind && lb_sizeof(type) > 0;
}
gb_internal lbArgType compute_arg_type(lbModule *m, LLVMTypeRef type, int *gprs_left, int *fprs_left, Type *odin_type) {
LLVMContextRef c = m->ctx;
@@ -1808,13 +1815,13 @@ namespace lbAbiRiscv64 {
return lb_arg_type_direct(orig_type, fp_type, nullptr, nullptr);
}
if (is_float(ty1) && is_register(ty2) && ty1s <= flen && ty2s <= xlen && *fprs_left >= 1 && *gprs_left >= 1) {
if (is_float(ty1) && is_int_member(ty2) && ty1s <= flen && ty2s <= xlen && *fprs_left >= 1 && *gprs_left >= 1) {
*fprs_left -= 1;
*gprs_left -= 1;
return lb_arg_type_direct(orig_type, fp_type, nullptr, nullptr);
}
if (is_register(ty1) && is_float(ty2) && ty1s <= xlen && ty2s <= flen && *gprs_left >= 1 && *fprs_left >= 1) {
if (is_int_member(ty1) && is_float(ty2) && ty1s <= xlen && ty2s <= flen && *gprs_left >= 1 && *fprs_left >= 1) {
*fprs_left -= 1;
*gprs_left -= 1;
return lb_arg_type_direct(orig_type, fp_type, nullptr, nullptr);