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Add a simple i32.eq operator.

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This commit is contained in:
Sergey Pepyakin
2018-11-19 21:56:19 +01:00
committed by Dan Gohman
parent b42696f207
commit ba216b2e8a
3 changed files with 39 additions and 0 deletions
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14
src/backend.rs
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@@ -243,6 +243,20 @@ pub fn store_i32(ctx: &mut Context, local_idx: u32) {
ctx.regs.release_scratch_gpr(gpr);
}
pub fn relop_eq_i32(ctx: &mut Context) {
let right = pop_i32(ctx);
let left = pop_i32(ctx);
let result = ctx.regs.take_scratch_gpr();
dynasm!(ctx.asm
; xor Rq(result), Rq(result)
; cmp Rd(left), Rd(right)
; sete Rb(result)
);
push_i32(ctx, result);
ctx.regs.release_scratch_gpr(left);
ctx.regs.release_scratch_gpr(right);
}
pub fn prepare_return_value(ctx: &mut Context) {
let ret_gpr = pop_i32(ctx);
if ret_gpr != RAX {