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optimise add; jo

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Fabian 2022-11-05 14:52:28 -06:00
parent f8cbf3b2bd
commit 625ad2802c
1 changed files with 28 additions and 2 deletions
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30
src/rust/codegen.rs
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@ -1829,6 +1829,7 @@ pub fn gen_getsf(ctx: &mut JitContext, negate: ConditionNegate) {
pub fn gen_getof(ctx: &mut JitContext) {
match &ctx.previous_instruction {
Instruction::Cmp { opsize, .. } | Instruction::Sub { opsize, .. } => {
// TODO: a better formula might be possible
let &opsize = opsize;
gen_profiler_stat_increment(ctx.builder, profiler::stat::CONDITION_OPTIMISED);
gen_get_last_op1(ctx.builder, &ctx.previous_instruction);
@ -1853,8 +1854,33 @@ pub fn gen_getof(ctx: &mut JitContext) {
});
ctx.builder.and_i32();
},
Instruction::Add { .. } | Instruction::Arithmetic { .. } | Instruction::Other => {
// TODO: add
Instruction::Add { opsize, .. } => {
// TODO: a better formula might be possible
let &opsize = opsize;
gen_profiler_stat_increment(ctx.builder, profiler::stat::CONDITION_OPTIMISED);
gen_get_last_op1(ctx.builder, &ctx.previous_instruction);
gen_get_last_result(ctx.builder, &ctx.previous_instruction);
ctx.builder.xor_i32();
gen_get_last_result(ctx.builder, &ctx.previous_instruction);
gen_get_last_result(ctx.builder, &ctx.previous_instruction);
gen_get_last_op1(ctx.builder, &ctx.previous_instruction);
ctx.builder.sub_i32();
ctx.builder.xor_i32();
ctx.builder.and_i32();
ctx.builder.const_i32(if opsize == OPSIZE_32 {
0x8000_0000u32 as i32
}
else if opsize == OPSIZE_16 {
0x8000
}
else {
0x80
});
ctx.builder.and_i32();
},
Instruction::Arithmetic { .. } | Instruction::Other => {
gen_profiler_stat_increment(ctx.builder, profiler::stat::CONDITION_UNOPTIMISED);
gen_get_flags_changed(ctx.builder);
let flags_changed = ctx.builder.tee_new_local();