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Infer #clobber memory and #clobber cc from the mnemonics directly

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gingerBill
2026-08-12 12:45:48 +01:00
parent b9a7ed9942
commit 2300a48782
5 changed files with 60 additions and 8 deletions
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12
core/rexcode/isa/x86/tablegen/cpp-compiler/cpp-gen.odin
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@@ -187,6 +187,18 @@ main :: proc() {
strings.write_string(&sb, "\t\tbool writes_mem;\n")
strings.write_string(&sb, "\t\tbool reads_mem;\n")
strings.write_string(&sb, "\t\tSideEffectFlags side_effects;\n")
strings.write_string(&sb, "\n")
strings.write_string(&sb, "\t\tbool implies_clobber_cc() {\n")
strings.write_string(&sb, "\t\t\tu16 const CC_MASK = ClobberFlag_CF|ClobberFlag_PF|ClobberFlag_AF|\n")
strings.write_string(&sb, "\t\t\t ClobberFlag_ZF|ClobberFlag_SF|ClobberFlag_OF;\n")
strings.write_string(&sb, "\t\t\treturn ((flags_wr | flags_undef) & CC_MASK) != 0;\n")
strings.write_string(&sb, "\t\t}\n")
strings.write_string(&sb, "\t\tbool implies_clobber_memory() {\n")
strings.write_string(&sb, "\t\t\treturn writes_mem || reads_mem ||\n")
strings.write_string(&sb, "\t\t\t\t(side_effects & (SideEffectFlag_FENCE |\n")
strings.write_string(&sb, "\t\t\t\t SideEffectFlag_CACHE |\n")
strings.write_string(&sb, "\t\t\t\t SideEffectFlag_SERIALIZING)) != 0;\n")
strings.write_string(&sb, "\t\t}\n")
strings.write_string(&sb, "\t};\n")
}
strings.write_string(&sb, "\n");