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aarch64: Migrate ishl/ushr/sshr to ISLE (#3608)

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* aarch64: Migrate ishl/ushr/sshr to ISLE

This commit migrates the `ishl`, `ushr`, and `sshr` instructions to
ISLE. These involve special cases for almost all types of integers
(including vectors) and helper functions for the i128 lowerings since
the i128 lowerings look to be used for other instructions as well. This
doesn't delete the i128 lowerings in the Rust code just yet because
they're still used by Rust lowerings, but they should be deletable in
due time once those lowerings are translated to ISLE.

* Use more descriptive names for i128 lowerings

* Use a with_flags-lookalike for csel

* Use existing `with_flags_*`

* Coment backwards order

* Update generated code
This commit is contained in:
Alex Crichton
2021-12-16 17:37:53 -06:00
committed by GitHub
parent e1e2f3ca15
commit d8974ce6bc
13 changed files with 895 additions and 290 deletions
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15
cranelift/codegen/src/isa/x64/lower/isle/generated_code.rs generated
View File

@@ -32,6 +32,7 @@ pub trait Context {
fn u32_as_u64(&mut self, arg0: u32) -> u64;
fn ty_bits(&mut self, arg0: Type) -> u8;
fn ty_bits_u16(&mut self, arg0: Type) -> u16;
fn fits_in_16(&mut self, arg0: Type) -> Option<Type>;
fn fits_in_32(&mut self, arg0: Type) -> Option<Type>;
fn fits_in_64(&mut self, arg0: Type) -> Option<Type>;
fn ty_32_or_64(&mut self, arg0: Type) -> Option<Type>;
@@ -76,13 +77,13 @@ pub trait Context {
fn sse_insertps_lane_imm(&mut self, arg0: u8) -> u8;
}
/// Internal type ProducesFlags: defined at src/prelude.isle line 259.
/// Internal type ProducesFlags: defined at src/prelude.isle line 263.
#[derive(Clone, Debug)]
pub enum ProducesFlags {
ProducesFlags { inst: MInst, result: Reg },
}
/// Internal type ConsumesFlags: defined at src/prelude.isle line 262.
/// Internal type ConsumesFlags: defined at src/prelude.isle line 266.
#[derive(Clone, Debug)]
pub enum ConsumesFlags {
ConsumesFlags { inst: MInst, result: Reg },
@@ -132,7 +133,7 @@ pub fn constructor_with_flags<C: Context>(
result: pattern3_1,
} = pattern2_0
{
// Rule at src/prelude.isle line 272.
// Rule at src/prelude.isle line 276.
let expr0_0 = C::emit(ctx, &pattern1_0);
let expr1_0 = C::emit(ctx, &pattern3_0);
let expr2_0 = C::value_regs(ctx, pattern1_1, pattern3_1);
@@ -160,7 +161,7 @@ pub fn constructor_with_flags_1<C: Context>(
result: pattern3_1,
} = pattern2_0
{
// Rule at src/prelude.isle line 280.
// Rule at src/prelude.isle line 284.
let expr0_0 = C::emit(ctx, &pattern1_0);
let expr1_0 = C::emit(ctx, &pattern3_0);
return Some(pattern3_1);
@@ -194,10 +195,10 @@ pub fn constructor_with_flags_2<C: Context>(
result: pattern5_1,
} = pattern4_0
{
// Rule at src/prelude.isle line 290.
// Rule at src/prelude.isle line 294.
let expr0_0 = C::emit(ctx, &pattern1_0);
let expr1_0 = C::emit(ctx, &pattern3_0);
let expr2_0 = C::emit(ctx, &pattern5_0);
let expr1_0 = C::emit(ctx, &pattern5_0);
let expr2_0 = C::emit(ctx, &pattern3_0);
let expr3_0 = C::value_regs(ctx, pattern3_1, pattern5_1);
return Some(expr3_0);
}