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Clobber implicit_wr and implicit_rd

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This commit is contained in:
gingerBill
2026-08-19 11:03:50 +01:00
parent ec81477af6
commit 8d0cc4d64b
3 changed files with 41 additions and 6 deletions
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16
src/asm_tables_amd64.cpp
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@@ -296,6 +296,22 @@ struct Asm_amd64 {
return ((side_effects & VOLATILE_SE) != 0);
}
};
void clobber_implicit_regs(StringSet *clobber_registers_set, ClobberRegs implicit_regs) {
u16 const NAMED =
ClobberReg_RAX|ClobberReg_RBX|ClobberReg_RCX|ClobberReg_RDX|
ClobberReg_RSI|ClobberReg_RDI|ClobberReg_RBP|ClobberReg_R11|
ClobberReg_XMM0;
u16 regs = implicit_regs & NAMED;
for (u16 bit = 1; bit != 0; bit <<= 1) {
if ((regs & bit) == 0) {
continue;
}
char const *rname = clobber_reg_bit_name(bit);
string_set_update(clobber_registers_set, make_string_c(rname));
}
}
static u16 const register_codes [REG_COUNT];
static String const register_strings[REG_COUNT];