fluencelabs/wasmer
1
0
Fork 0
mirror of https://github.com/fluencelabs/wasmer synced 2025-06-30 00:51:34 +00:00
Code Issues Projects Releases Wiki Activity

Use type traits to ensure that the float and int types match in trunc_sat.

Browse Source
This commit is contained in:
Nick Lewycky
2019-12-12 13:56:11 -08:00
parent fa29a1b9f2
commit 5b35313099
1 changed files with 8 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
lib/llvm-backend/src/code.rs
View File

@ -13,7 +13,7 @@ use inkwell::{
module::{Linkage, Module},
passes::PassManager,
targets::{CodeModel, InitializationConfig, RelocMode, Target, TargetMachine},
types::{BasicType, BasicTypeEnum, FunctionType, PointerType, VectorType},
types::{BasicType, BasicTypeEnum, FloatMathType, FunctionType, PointerType, VectorType},
values::{
BasicValue, BasicValueEnum, FloatValue, FunctionValue, IntValue, PhiValue, PointerValue,
VectorValue,
@ -99,13 +99,12 @@ fn splat_vector<'ctx>(
}
// Convert floating point vector to integer and saturate when out of range.
// TODO: generalize to non-vectors using FloatMathType, IntMathType, etc. for
// https://github.com/WebAssembly/nontrapping-float-to-int-conversions/blob/master/proposals/nontrapping-float-to-int-conversion/Overview.md
fn trunc_sat<'ctx>(
fn trunc_sat<'ctx, T: FloatMathType<'ctx>>(
builder: &Builder<'ctx>,
intrinsics: &Intrinsics<'ctx>,
fvec_ty: VectorType<'ctx>,
ivec_ty: VectorType<'ctx>,
fvec_ty: T,
ivec_ty: T::MathConvType,
lower_bound: u64, // Exclusive (lowest representable value)
upper_bound: u64, // Exclusive (greatest representable value)
int_min_value: u64,
@ -126,6 +125,9 @@ fn trunc_sat<'ctx>(
// f) Use our previous comparison results to replace certain zeros with
// int_min or int_max.
let fvec_ty = fvec_ty.as_basic_type_enum().into_vector_type();
let ivec_ty = ivec_ty.as_basic_type_enum().into_vector_type();
let is_signed = int_min_value != 0;
let ivec_element_ty = ivec_ty.get_element_type().into_int_type();
let int_min_value = splat_vector(
@ -4492,6 +4494,7 @@ impl<'ctx> FunctionCodeGenerator<CodegenError> for LLVMFunctionCodeGenerator<'ct
}
Operator::I64TruncSSatF32 | Operator::I64TruncSSatF64 => {
let v1 = state.pop1()?.into_float_value();
let res =
builder.build_float_to_signed_int(v1, intrinsics.i64_ty, &state.var_name());
state.push1(res);