T0b1/wasmtime
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Remove trapif and trapff (#5162)

Browse Source 
This branch removes the trapif and trapff instructions, in favor of using an explicit comparison and trapnz. This moves us closer to removing iflags and fflags, but introduces the need to implement instructions like iadd_cout in the x64 and aarch64 backends.
This commit is contained in:
Trevor Elliott
2022-11-03 09:25:11 -07:00
committed by GitHub
parent 311b01875f
commit aeceea28e2
19 changed files with 30 additions and 215 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
cranelift/codegen/meta/src/shared/instructions.rs
View File

@@ -75,9 +75,6 @@ fn define_control_flow(
);
}
let iflags: &TypeVar = &ValueType::Special(types::Flag::IFlags.into()).into();
let fflags: &TypeVar = &ValueType::Special(types::Flag::FFlags.into()).into();
{
let _i32 = &TypeVar::new(
"i32",
@@ -205,35 +202,6 @@ fn define_control_flow(
.operands_in(vec![c, code])
.can_trap(true),
);
let Cond = &Operand::new("Cond", &imm.intcc);
let f = &Operand::new("f", iflags);
ig.push(
Inst::new(
"trapif",
r#"
Trap when condition is true in integer CPU flags.
"#,
&formats.int_cond_trap,
)
.operands_in(vec![Cond, f, code])
.can_trap(true),
);
let Cond = &Operand::new("Cond", &imm.floatcc);
let f = &Operand::new("f", fflags);
let code = &Operand::new("code", &imm.trapcode);
ig.push(
Inst::new(
"trapff",
r#"
Trap when condition is true in floating point CPU flags.
"#,
&formats.float_cond_trap,
)
.operands_in(vec![Cond, f, code])
.can_trap(true),
);
}
let rvals = &Operand::new("rvals", &entities.varargs).with_doc("return values");