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cranelift: remove load_complex and store_complex (#3976)

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This change removes all variants of `load*_complex` and `store*_complex`
from Cranelift; this is a breaking change to the instructions exposed by
CLIF. The complete list of instructions removed is: `load_complex`,
`store_complex`, `uload8_complex`, `sload8_complex`, `istore8_complex`,
`sload8_complex`, `uload16_complex`, `sload16_complex`,
`istore16_complex`, `uload32_complex`, `sload32_complex`,
`istore32_complex`, `uload8x8_complex`, `sload8x8_complex`,
`sload16x4_complex`, `uload16x4_complex`, `uload32x2_complex`,
`sload32x2_complex`.

The rationale for this removal is that the Cranelift backend now has the
ability to pattern-match multiple upstream additions in order to
calculate the address to access. Previously, this was not possible so
the `*_complex` instructions were needed. Over time, these instructions
have fallen out of use in this repository, making the additional
overhead of maintaining them a chore.
This commit is contained in:
Andrew Brown
2022-03-31 10:05:10 -07:00
committed by GitHub
parent c8daf0b8db
commit bd6fe11ca9
20 changed files with 51 additions and 892 deletions
Download Patch File Download Diff File Expand all files Collapse all files

126
cranelift/codegen/src/isa/x64/lower.rs
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@@ -2173,13 +2173,6 @@ fn lower_insn_to_regs<C: LowerCtx<I = Inst>>(
| Opcode::Sload16
| Opcode::Uload32
| Opcode::Sload32
| Opcode::LoadComplex
| Opcode::Uload8Complex
| Opcode::Sload8Complex
| Opcode::Uload16Complex
| Opcode::Sload16Complex
| Opcode::Uload32Complex
| Opcode::Sload32Complex
| Opcode::Sload8x8
| Opcode::Uload8x8
| Opcode::Sload16x4
@@ -2189,30 +2182,13 @@ fn lower_insn_to_regs<C: LowerCtx<I = Inst>>(
let offset = ctx.data(insn).load_store_offset().unwrap();
let elem_ty = match op {
Opcode::Sload8 | Opcode::Uload8 | Opcode::Sload8Complex | Opcode::Uload8Complex => {
types::I8
}
Opcode::Sload16
| Opcode::Uload16
| Opcode::Sload16Complex
| Opcode::Uload16Complex => types::I16,
Opcode::Sload32
| Opcode::Uload32
| Opcode::Sload32Complex
| Opcode::Uload32Complex => types::I32,
Opcode::Sload8x8
| Opcode::Uload8x8
| Opcode::Sload8x8Complex
| Opcode::Uload8x8Complex => types::I8X8,
Opcode::Sload16x4
| Opcode::Uload16x4
| Opcode::Sload16x4Complex
| Opcode::Uload16x4Complex => types::I16X4,
Opcode::Sload32x2
| Opcode::Uload32x2
| Opcode::Sload32x2Complex
| Opcode::Uload32x2Complex => types::I32X2,
Opcode::Load | Opcode::LoadComplex => ctx.output_ty(insn, 0),
Opcode::Sload8 | Opcode::Uload8 => types::I8,
Opcode::Sload16 | Opcode::Uload16 => types::I16,
Opcode::Sload32 | Opcode::Uload32 => types::I32,
Opcode::Sload8x8 | Opcode::Uload8x8 => types::I8X8,
Opcode::Sload16x4 | Opcode::Uload16x4 => types::I16X4,
Opcode::Sload32x2 | Opcode::Uload32x2 => types::I32X2,
Opcode::Load => ctx.output_ty(insn, 0),
_ => unimplemented!(),
};
@@ -2220,17 +2196,11 @@ fn lower_insn_to_regs<C: LowerCtx<I = Inst>>(
let sign_extend = match op {
Opcode::Sload8
| Opcode::Sload8Complex
| Opcode::Sload16
| Opcode::Sload16Complex
| Opcode::Sload32
| Opcode::Sload32Complex
| Opcode::Sload8x8
| Opcode::Sload8x8Complex
| Opcode::Sload16x4
| Opcode::Sload16x4Complex
| Opcode::Sload32x2
| Opcode::Sload32x2Complex => true,
| Opcode::Sload32x2 => true,
_ => false,
};
@@ -2251,37 +2221,6 @@ fn lower_insn_to_regs<C: LowerCtx<I = Inst>>(
assert_eq!(inputs.len(), 1, "only one input for load operands");
lower_to_amode(ctx, inputs[0], offset)
}
Opcode::LoadComplex
| Opcode::Uload8Complex
| Opcode::Sload8Complex
| Opcode::Uload16Complex
| Opcode::Sload16Complex
| Opcode::Uload32Complex
| Opcode::Sload32Complex
| Opcode::Sload8x8Complex
| Opcode::Uload8x8Complex
| Opcode::Sload16x4Complex
| Opcode::Uload16x4Complex
| Opcode::Sload32x2Complex
| Opcode::Uload32x2Complex => {
assert_eq!(
inputs.len(),
2,
"can't handle more than two inputs in complex load"
);
let base = put_input_in_reg(ctx, inputs[0]);
let index = put_input_in_reg(ctx, inputs[1]);
let shift = 0;
let flags = ctx.memflags(insn).expect("load should have memflags");
Amode::imm_reg_reg_shift(
offset as u32,
Gpr::new(base).unwrap(),
Gpr::new(index).unwrap(),
shift,
)
.with_flags(flags)
}
_ => unreachable!(),
};
@@ -2347,21 +2286,14 @@ fn lower_insn_to_regs<C: LowerCtx<I = Inst>>(
}
}
Opcode::Store
| Opcode::Istore8
| Opcode::Istore16
| Opcode::Istore32
| Opcode::StoreComplex
| Opcode::Istore8Complex
| Opcode::Istore16Complex
| Opcode::Istore32Complex => {
Opcode::Store | Opcode::Istore8 | Opcode::Istore16 | Opcode::Istore32 => {
let offset = ctx.data(insn).load_store_offset().unwrap();
let elem_ty = match op {
Opcode::Istore8 | Opcode::Istore8Complex => types::I8,
Opcode::Istore16 | Opcode::Istore16Complex => types::I16,
Opcode::Istore32 | Opcode::Istore32Complex => types::I32,
Opcode::Store | Opcode::StoreComplex => ctx.input_ty(insn, 0),
Opcode::Istore8 => types::I8,
Opcode::Istore16 => types::I16,
Opcode::Istore32 => types::I32,
Opcode::Store => ctx.input_ty(insn, 0),
_ => unreachable!(),
};
@@ -2370,29 +2302,6 @@ fn lower_insn_to_regs<C: LowerCtx<I = Inst>>(
assert_eq!(inputs.len(), 2, "only one input for store memory operands");
lower_to_amode(ctx, inputs[1], offset)
}
Opcode::StoreComplex
| Opcode::Istore8Complex
| Opcode::Istore16Complex
| Opcode::Istore32Complex => {
assert_eq!(
inputs.len(),
3,
"can't handle more than two inputs in complex store"
);
let base = put_input_in_reg(ctx, inputs[1]);
let index = put_input_in_reg(ctx, inputs[2]);
let shift = 0;
let flags = ctx.memflags(insn).expect("store should have memflags");
Amode::imm_reg_reg_shift(
offset as u32,
Gpr::new(base).unwrap(),
Gpr::new(index).unwrap(),
shift,
)
.with_flags(flags)
}
_ => unreachable!(),
};
@@ -3293,15 +3202,6 @@ fn lower_insn_to_regs<C: LowerCtx<I = Inst>>(
// Unimplemented opcodes below. These are not currently used by Wasm
// lowering or other known embeddings, but should be either supported or
// removed eventually.
Opcode::Uload8x8Complex
| Opcode::Sload8x8Complex
| Opcode::Uload16x4Complex
| Opcode::Sload16x4Complex
| Opcode::Uload32x2Complex
| Opcode::Sload32x2Complex => {
unimplemented!("Vector load {:?} not implemented", op);
}
Opcode::Cls => unimplemented!("Cls not supported"),
Opcode::Fma => unimplemented!("Fma not supported"),