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native: implement neg() for arm64 (#14745)

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Spydr 2022-06-12 08:42:39 +02:00 committed by GitHub
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commit 5c104cf981
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13
vlib/v/gen/native/arm64.v
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@ -77,6 +77,19 @@ fn (mut g Gen) mov_arm(reg Arm64Register, val u64) {
*/
}
fn (mut g Gen) neg_arm(r Arm64Register) {
g.neg_regs_arm(r, r)
}
fn (mut g Gen) neg_regs_arm(a Arm64Register, b Arm64Register) {
if int(a) < 0x0f && int(b) < 0x0f {
g.write32(0xe2600000 | int(a) << 16 | int(b) << 12)
g.println('neg $a, $b')
} else {
g.n_error('unhandled neg $a, $b')
}
}
pub fn (mut g Gen) fn_decl_arm64(node ast.FnDecl) {
g.gen_arm64_helloworld()
// TODO