forked from M-Labs/nac3
563 lines
20 KiB
Rust
563 lines
20 KiB
Rust
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use inkwell::AddressSpace;
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use inkwell::context::Context;
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use inkwell::types::AnyTypeEnum::IntType;
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use inkwell::types::FloatType;
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use inkwell::values::{BasicValueEnum, CallSiteValue, FloatValue, IntValue, PointerValue};
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use itertools::Either;
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use crate::codegen::CodeGenContext;
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/// Returns the string representation for the floating-point type `ft` when used in intrinsic
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/// functions.
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fn get_float_intrinsic_repr(ctx: &Context, ft: FloatType) -> &'static str {
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// Standard LLVM floating-point types
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if ft == ctx.f16_type() {
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return "f16"
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}
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if ft == ctx.f32_type() {
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return "f32"
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}
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if ft == ctx.f64_type() {
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return "f64"
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}
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if ft == ctx.f128_type() {
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return "f128"
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}
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// Non-standard floating-point types
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if ft == ctx.x86_f80_type() {
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return "f80"
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}
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if ft == ctx.ppc_f128_type() {
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return "ppcf128"
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}
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unreachable!()
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}
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/// Invokes the [`llvm.stacksave`](https://llvm.org/docs/LangRef.html#llvm-stacksave-intrinsic)
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/// intrinsic.
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pub fn call_stacksave<'ctx>(
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ctx: &CodeGenContext<'ctx, '_>,
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name: Option<&str>,
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) -> PointerValue<'ctx> {
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const FN_NAME: &str = "llvm.stacksave";
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let intrinsic_fn = ctx.module.get_function(FN_NAME).unwrap_or_else(|| {
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let llvm_i8 = ctx.ctx.i8_type();
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let llvm_p0i8 = llvm_i8.ptr_type(AddressSpace::default());
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let fn_type = llvm_p0i8.fn_type(&[], false);
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ctx.module.add_function(FN_NAME, fn_type, None)
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});
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ctx.builder
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.build_call(intrinsic_fn, &[], name.unwrap_or_default())
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.map(CallSiteValue::try_as_basic_value)
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.map(|v| v.map_left(BasicValueEnum::into_pointer_value))
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.map(Either::unwrap_left)
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.unwrap()
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}
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/// Invokes the
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/// [`llvm.stackrestore`](https://llvm.org/docs/LangRef.html#llvm-stackrestore-intrinsic) intrinsic.
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pub fn call_stackrestore<'ctx>(ctx: &CodeGenContext<'ctx, '_>, ptr: PointerValue<'ctx>) {
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const FN_NAME: &str = "llvm.stackrestore";
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let intrinsic_fn = ctx.module.get_function(FN_NAME).unwrap_or_else(|| {
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let llvm_void = ctx.ctx.void_type();
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let llvm_i8 = ctx.ctx.i8_type();
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let llvm_p0i8 = llvm_i8.ptr_type(AddressSpace::default());
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let fn_type = llvm_void.fn_type(&[llvm_p0i8.into()], false);
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ctx.module.add_function(FN_NAME, fn_type, None)
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});
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ctx.builder
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.build_call(intrinsic_fn, &[ptr.into()], "")
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.unwrap();
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}
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/// Invokes the [`llvm.abs`](https://llvm.org/docs/LangRef.html#llvm-abs-intrinsic) intrinsic.
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///
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/// * `src` - The value for which the absolute value is to be returned.
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/// * `is_int_min_poison` - Whether `poison` is to be returned if `src` is `INT_MIN`.
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pub fn call_int_abs<'ctx>(
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ctx: &CodeGenContext<'ctx, '_>,
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src: IntValue<'ctx>,
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is_int_min_poison: IntValue<'ctx>,
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name: Option<&str>,
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) -> IntValue<'ctx> {
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debug_assert_eq!(is_int_min_poison.get_type().get_bit_width(), 1);
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debug_assert!(is_int_min_poison.is_const());
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let llvm_src_t = src.get_type();
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let fn_name = format!("llvm.abs.i{}", llvm_src_t.get_bit_width());
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let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
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let llvm_i1 = ctx.ctx.bool_type();
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let fn_type = llvm_src_t.fn_type(&[llvm_src_t.into(), llvm_i1.into()], false);
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ctx.module.add_function(fn_name.as_str(), fn_type, None)
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});
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ctx.builder
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.build_call(intrinsic_fn, &[src.into(), is_int_min_poison.into()], name.unwrap_or_default())
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.map(CallSiteValue::try_as_basic_value)
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.map(|v| v.map_left(BasicValueEnum::into_int_value))
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.map(Either::unwrap_left)
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.unwrap()
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}
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/// Invokes the [`llvm.smax`](https://llvm.org/docs/LangRef.html#llvm-smax-intrinsic) intrinsic.
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pub fn call_int_smax<'ctx>(
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ctx: &CodeGenContext<'ctx, '_>,
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a: IntValue<'ctx>,
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b: IntValue<'ctx>,
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name: Option<&str>,
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) -> IntValue<'ctx> {
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debug_assert_eq!(a.get_type().get_bit_width(), b.get_type().get_bit_width());
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let llvm_int_t = a.get_type();
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let fn_name = format!("llvm.smax.i{}", llvm_int_t.get_bit_width());
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let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
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let fn_type = llvm_int_t.fn_type(&[llvm_int_t.into(), llvm_int_t.into()], false);
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ctx.module.add_function(fn_name.as_str(), fn_type, None)
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});
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ctx.builder
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.build_call(intrinsic_fn, &[a.into(), b.into()], name.unwrap_or_default())
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.map(CallSiteValue::try_as_basic_value)
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.map(|v| v.map_left(BasicValueEnum::into_int_value))
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.map(Either::unwrap_left)
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.unwrap()
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}
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/// Invokes the [`llvm.smin`](https://llvm.org/docs/LangRef.html#llvm-smin-intrinsic) intrinsic.
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pub fn call_int_smin<'ctx>(
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ctx: &CodeGenContext<'ctx, '_>,
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a: IntValue<'ctx>,
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b: IntValue<'ctx>,
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name: Option<&str>,
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) -> IntValue<'ctx> {
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debug_assert_eq!(a.get_type().get_bit_width(), b.get_type().get_bit_width());
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let llvm_int_t = a.get_type();
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let fn_name = format!("llvm.smin.i{}", llvm_int_t.get_bit_width());
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let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
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let fn_type = llvm_int_t.fn_type(&[llvm_int_t.into(), llvm_int_t.into()], false);
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ctx.module.add_function(fn_name.as_str(), fn_type, None)
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});
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ctx.builder
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.build_call(intrinsic_fn, &[a.into(), b.into()], name.unwrap_or_default())
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.map(CallSiteValue::try_as_basic_value)
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.map(|v| v.map_left(BasicValueEnum::into_int_value))
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.map(Either::unwrap_left)
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.unwrap()
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}
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/// Invokes the [`llvm.umax`](https://llvm.org/docs/LangRef.html#llvm-umax-intrinsic) intrinsic.
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pub fn call_int_umax<'ctx>(
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ctx: &CodeGenContext<'ctx, '_>,
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a: IntValue<'ctx>,
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b: IntValue<'ctx>,
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name: Option<&str>,
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) -> IntValue<'ctx> {
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debug_assert_eq!(a.get_type().get_bit_width(), b.get_type().get_bit_width());
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let llvm_int_t = a.get_type();
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let fn_name = format!("llvm.umax.i{}", llvm_int_t.get_bit_width());
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let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
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let fn_type = llvm_int_t.fn_type(&[llvm_int_t.into(), llvm_int_t.into()], false);
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ctx.module.add_function(fn_name.as_str(), fn_type, None)
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});
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ctx.builder
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.build_call(intrinsic_fn, &[a.into(), b.into()], name.unwrap_or_default())
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.map(CallSiteValue::try_as_basic_value)
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.map(|v| v.map_left(BasicValueEnum::into_int_value))
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.map(Either::unwrap_left)
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.unwrap()
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}
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/// Invokes the [`llvm.umin`](https://llvm.org/docs/LangRef.html#llvm-umin-intrinsic) intrinsic.
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pub fn call_int_umin<'ctx>(
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ctx: &CodeGenContext<'ctx, '_>,
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a: IntValue<'ctx>,
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b: IntValue<'ctx>,
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name: Option<&str>,
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) -> IntValue<'ctx> {
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debug_assert_eq!(a.get_type().get_bit_width(), b.get_type().get_bit_width());
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let llvm_int_t = a.get_type();
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let fn_name = format!("llvm.umin.i{}", llvm_int_t.get_bit_width());
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let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
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let fn_type = llvm_int_t.fn_type(&[llvm_int_t.into(), llvm_int_t.into()], false);
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ctx.module.add_function(fn_name.as_str(), fn_type, None)
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});
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ctx.builder
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.build_call(intrinsic_fn, &[a.into(), b.into()], name.unwrap_or_default())
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.map(CallSiteValue::try_as_basic_value)
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.map(|v| v.map_left(BasicValueEnum::into_int_value))
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.map(Either::unwrap_left)
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.unwrap()
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}
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/// Invokes the [`llvm.memcpy`](https://llvm.org/docs/LangRef.html#llvm-memcpy-intrinsic) intrinsic.
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///
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/// * `dest` - The pointer to the destination. Must be a pointer to an integer type.
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/// * `src` - The pointer to the source. Must be a pointer to an integer type.
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/// * `len` - The number of bytes to copy.
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/// * `is_volatile` - Whether the `memcpy` operation should be `volatile`.
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pub fn call_memcpy<'ctx>(
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ctx: &CodeGenContext<'ctx, '_>,
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dest: PointerValue<'ctx>,
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src: PointerValue<'ctx>,
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len: IntValue<'ctx>,
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is_volatile: IntValue<'ctx>,
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) {
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debug_assert!(dest.get_type().get_element_type().is_int_type());
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debug_assert!(src.get_type().get_element_type().is_int_type());
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debug_assert_eq!(
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dest.get_type().get_element_type().into_int_type().get_bit_width(),
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src.get_type().get_element_type().into_int_type().get_bit_width(),
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);
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debug_assert!(matches!(len.get_type().get_bit_width(), 32 | 64));
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debug_assert_eq!(is_volatile.get_type().get_bit_width(), 1);
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let llvm_dest_t = dest.get_type();
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let llvm_src_t = src.get_type();
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let llvm_len_t = len.get_type();
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let fn_name = format!(
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"llvm.memcpy.p0i{}.p0i{}.i{}",
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llvm_dest_t.get_element_type().into_int_type().get_bit_width(),
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llvm_src_t.get_element_type().into_int_type().get_bit_width(),
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llvm_len_t.get_bit_width(),
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);
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let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
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let llvm_void = ctx.ctx.void_type();
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let fn_type = llvm_void.fn_type(
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&[
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llvm_dest_t.into(),
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llvm_src_t.into(),
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llvm_len_t.into(),
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is_volatile.get_type().into(),
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],
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false,
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);
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ctx.module.add_function(fn_name.as_str(), fn_type, None)
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});
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ctx.builder
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.build_call(intrinsic_fn, &[dest.into(), src.into(), len.into(), is_volatile.into()], "")
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.unwrap();
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}
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/// Invokes the `llvm.memcpy` intrinsic.
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///
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/// Unlike [`call_memcpy`], this function accepts any type of pointer value. If `dest` or `src` is
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/// not a pointer to an integer, the pointer(s) will be cast to `i8*` before invoking `memcpy`.
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pub fn call_memcpy_generic<'ctx>(
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ctx: &CodeGenContext<'ctx, '_>,
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dest: PointerValue<'ctx>,
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src: PointerValue<'ctx>,
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len: IntValue<'ctx>,
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is_volatile: IntValue<'ctx>,
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) {
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let llvm_i8 = ctx.ctx.i8_type();
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let llvm_p0i8 = llvm_i8.ptr_type(AddressSpace::default());
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let dest_elem_t = dest.get_type().get_element_type();
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let src_elem_t = src.get_type().get_element_type();
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let dest = if matches!(dest_elem_t, IntType(t) if t.get_bit_width() == 8) {
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dest
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} else {
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ctx.builder
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.build_bitcast(dest, llvm_p0i8, "")
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.map(BasicValueEnum::into_pointer_value)
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.unwrap()
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};
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let src = if matches!(src_elem_t, IntType(t) if t.get_bit_width() == 8) {
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src
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} else {
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ctx.builder
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.build_bitcast(src, llvm_p0i8, "")
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.map(BasicValueEnum::into_pointer_value)
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.unwrap()
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};
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call_memcpy(ctx, dest, src, len, is_volatile);
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}
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/// Invokes the [`llvm.powi`](https://llvm.org/docs/LangRef.html#llvm-powi-intrinsic) intrinsic.
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pub fn call_float_powi<'ctx>(
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ctx: &CodeGenContext<'ctx, '_>,
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||
|
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val: FloatValue<'ctx>,
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|
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power: IntValue<'ctx>,
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|
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name: Option<&str>,
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|
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) -> FloatValue<'ctx> {
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let llvm_val_t = val.get_type();
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let llvm_power_t = power.get_type();
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let fn_name = format!(
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"llvm.powi.{}.i{}",
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get_float_intrinsic_repr(ctx.ctx, llvm_val_t),
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llvm_power_t.get_bit_width(),
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);
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||
|
|
let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
|
||
|
|
let fn_type = llvm_val_t.fn_type(&[llvm_val_t.into(), llvm_power_t.into()], false);
|
||
|
|
|
||
|
|
ctx.module.add_function(fn_name.as_str(), fn_type, None)
|
||
|
|
});
|
||
|
|
|
||
|
|
ctx.builder
|
||
|
|
.build_call(intrinsic_fn, &[val.into(), power.into()], name.unwrap_or_default())
|
||
|
|
.map(CallSiteValue::try_as_basic_value)
|
||
|
|
.map(|v| v.map_left(BasicValueEnum::into_float_value))
|
||
|
|
.map(Either::unwrap_left)
|
||
|
|
.unwrap()
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Invokes the [`llvm.pow`](https://llvm.org/docs/LangRef.html#llvm-pow-intrinsic) intrinsic.
|
||
|
|
pub fn call_float_pow<'ctx>(
|
||
|
|
ctx: &CodeGenContext<'ctx, '_>,
|
||
|
|
val: FloatValue<'ctx>,
|
||
|
|
power: FloatValue<'ctx>,
|
||
|
|
name: Option<&str>,
|
||
|
|
) -> FloatValue<'ctx> {
|
||
|
|
debug_assert_eq!(val.get_type(), power.get_type());
|
||
|
|
|
||
|
|
let llvm_float_t = val.get_type();
|
||
|
|
|
||
|
|
let fn_name = format!("llvm.pow.{}", get_float_intrinsic_repr(ctx.ctx, llvm_float_t));
|
||
|
|
let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
|
||
|
|
let fn_type = llvm_float_t.fn_type(&[llvm_float_t.into(), llvm_float_t.into()], false);
|
||
|
|
|
||
|
|
ctx.module.add_function(fn_name.as_str(), fn_type, None)
|
||
|
|
});
|
||
|
|
|
||
|
|
ctx.builder
|
||
|
|
.build_call(intrinsic_fn, &[val.into(), power.into()], name.unwrap_or_default())
|
||
|
|
.map(CallSiteValue::try_as_basic_value)
|
||
|
|
.map(|v| v.map_left(BasicValueEnum::into_float_value))
|
||
|
|
.map(Either::unwrap_left)
|
||
|
|
.unwrap()
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Invokes the [`llvm.fabs`](https://llvm.org/docs/LangRef.html#llvm-fabs-intrinsic) intrinsic.
|
||
|
|
pub fn call_float_fabs<'ctx>(
|
||
|
|
ctx: &CodeGenContext<'ctx, '_>,
|
||
|
|
src: FloatValue<'ctx>,
|
||
|
|
name: Option<&str>,
|
||
|
|
) -> FloatValue<'ctx> {
|
||
|
|
let llvm_src_t = src.get_type();
|
||
|
|
|
||
|
|
let fn_name = format!("llvm.fabs.{}", get_float_intrinsic_repr(ctx.ctx, llvm_src_t));
|
||
|
|
|
||
|
|
let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
|
||
|
|
let fn_type = llvm_src_t.fn_type(&[llvm_src_t.into()], false);
|
||
|
|
|
||
|
|
ctx.module.add_function(fn_name.as_str(), fn_type, None)
|
||
|
|
});
|
||
|
|
|
||
|
|
ctx.builder
|
||
|
|
.build_call(intrinsic_fn, &[src.into()], name.unwrap_or_default())
|
||
|
|
.map(CallSiteValue::try_as_basic_value)
|
||
|
|
.map(|v| v.map_left(BasicValueEnum::into_float_value))
|
||
|
|
.map(Either::unwrap_left)
|
||
|
|
.unwrap()
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Invokes the [`llvm.minnum`](https://llvm.org/docs/LangRef.html#llvm-minnum-intrinsic) intrinsic.
|
||
|
|
pub fn call_float_minnum<'ctx>(
|
||
|
|
ctx: &CodeGenContext<'ctx, '_>,
|
||
|
|
val1: FloatValue<'ctx>,
|
||
|
|
val2: FloatValue<'ctx>,
|
||
|
|
name: Option<&str>,
|
||
|
|
) -> FloatValue<'ctx> {
|
||
|
|
debug_assert_eq!(val1.get_type(), val2.get_type());
|
||
|
|
|
||
|
|
let llvm_float_t = val1.get_type();
|
||
|
|
|
||
|
|
let fn_name = format!("llvm.minnum.{}", get_float_intrinsic_repr(ctx.ctx, llvm_float_t));
|
||
|
|
let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
|
||
|
|
let fn_type = llvm_float_t.fn_type(&[llvm_float_t.into(), llvm_float_t.into()], false);
|
||
|
|
|
||
|
|
ctx.module.add_function(fn_name.as_str(), fn_type, None)
|
||
|
|
});
|
||
|
|
|
||
|
|
ctx.builder
|
||
|
|
.build_call(intrinsic_fn, &[val1.into(), val2.into()], name.unwrap_or_default())
|
||
|
|
.map(CallSiteValue::try_as_basic_value)
|
||
|
|
.map(|v| v.map_left(BasicValueEnum::into_float_value))
|
||
|
|
.map(Either::unwrap_left)
|
||
|
|
.unwrap()
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Invokes the [`llvm.maxnum`](https://llvm.org/docs/LangRef.html#llvm-maxnum-intrinsic) intrinsic.
|
||
|
|
pub fn call_float_maxnum<'ctx>(
|
||
|
|
ctx: &CodeGenContext<'ctx, '_>,
|
||
|
|
val1: FloatValue<'ctx>,
|
||
|
|
val2: FloatValue<'ctx>,
|
||
|
|
name: Option<&str>,
|
||
|
|
) -> FloatValue<'ctx> {
|
||
|
|
debug_assert_eq!(val1.get_type(), val2.get_type());
|
||
|
|
|
||
|
|
let llvm_float_t = val1.get_type();
|
||
|
|
|
||
|
|
let fn_name = format!("llvm.maxnum.{}", get_float_intrinsic_repr(ctx.ctx, llvm_float_t));
|
||
|
|
let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
|
||
|
|
let fn_type = llvm_float_t.fn_type(&[llvm_float_t.into(), llvm_float_t.into()], false);
|
||
|
|
|
||
|
|
ctx.module.add_function(fn_name.as_str(), fn_type, None)
|
||
|
|
});
|
||
|
|
|
||
|
|
ctx.builder
|
||
|
|
.build_call(intrinsic_fn, &[val1.into(), val2.into()], name.unwrap_or_default())
|
||
|
|
.map(CallSiteValue::try_as_basic_value)
|
||
|
|
.map(|v| v.map_left(BasicValueEnum::into_float_value))
|
||
|
|
.map(Either::unwrap_left)
|
||
|
|
.unwrap()
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Invokes the [`llvm.floor`](https://llvm.org/docs/LangRef.html#llvm-floor-intrinsic) intrinsic.
|
||
|
|
pub fn call_float_floor<'ctx>(
|
||
|
|
ctx: &CodeGenContext<'ctx, '_>,
|
||
|
|
val: FloatValue<'ctx>,
|
||
|
|
name: Option<&str>,
|
||
|
|
) -> FloatValue<'ctx> {
|
||
|
|
let llvm_float_t = val.get_type();
|
||
|
|
|
||
|
|
let fn_name = format!("llvm.floor.{}", get_float_intrinsic_repr(ctx.ctx, llvm_float_t));
|
||
|
|
let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
|
||
|
|
let fn_type = llvm_float_t.fn_type(&[llvm_float_t.into()], false);
|
||
|
|
|
||
|
|
ctx.module.add_function(fn_name.as_str(), fn_type, None)
|
||
|
|
});
|
||
|
|
|
||
|
|
ctx.builder
|
||
|
|
.build_call(intrinsic_fn, &[val.into()], name.unwrap_or_default())
|
||
|
|
.map(CallSiteValue::try_as_basic_value)
|
||
|
|
.map(|v| v.map_left(BasicValueEnum::into_float_value))
|
||
|
|
.map(Either::unwrap_left)
|
||
|
|
.unwrap()
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Invokes the [`llvm.ceil`](https://llvm.org/docs/LangRef.html#llvm-ceil-intrinsic) intrinsic.
|
||
|
|
pub fn call_float_ceil<'ctx>(
|
||
|
|
ctx: &CodeGenContext<'ctx, '_>,
|
||
|
|
val: FloatValue<'ctx>,
|
||
|
|
name: Option<&str>,
|
||
|
|
) -> FloatValue<'ctx> {
|
||
|
|
let llvm_float_t = val.get_type();
|
||
|
|
|
||
|
|
let fn_name = format!("llvm.ceil.{}", get_float_intrinsic_repr(ctx.ctx, llvm_float_t));
|
||
|
|
let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
|
||
|
|
let fn_type = llvm_float_t.fn_type(&[llvm_float_t.into()], false);
|
||
|
|
|
||
|
|
ctx.module.add_function(fn_name.as_str(), fn_type, None)
|
||
|
|
});
|
||
|
|
|
||
|
|
ctx.builder
|
||
|
|
.build_call(intrinsic_fn, &[val.into()], name.unwrap_or_default())
|
||
|
|
.map(CallSiteValue::try_as_basic_value)
|
||
|
|
.map(|v| v.map_left(BasicValueEnum::into_float_value))
|
||
|
|
.map(Either::unwrap_left)
|
||
|
|
.unwrap()
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Invokes the [`llvm.round`](https://llvm.org/docs/LangRef.html#llvm-round-intrinsic) intrinsic.
|
||
|
|
pub fn call_float_round<'ctx>(
|
||
|
|
ctx: &CodeGenContext<'ctx, '_>,
|
||
|
|
val: FloatValue<'ctx>,
|
||
|
|
name: Option<&str>,
|
||
|
|
) -> FloatValue<'ctx> {
|
||
|
|
let llvm_float_t = val.get_type();
|
||
|
|
|
||
|
|
let fn_name = format!("llvm.round.{}", get_float_intrinsic_repr(ctx.ctx, llvm_float_t));
|
||
|
|
let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
|
||
|
|
let fn_type = llvm_float_t.fn_type(&[llvm_float_t.into()], false);
|
||
|
|
|
||
|
|
ctx.module.add_function(fn_name.as_str(), fn_type, None)
|
||
|
|
});
|
||
|
|
|
||
|
|
ctx.builder
|
||
|
|
.build_call(intrinsic_fn, &[val.into()], name.unwrap_or_default())
|
||
|
|
.map(CallSiteValue::try_as_basic_value)
|
||
|
|
.map(|v| v.map_left(BasicValueEnum::into_float_value))
|
||
|
|
.map(Either::unwrap_left)
|
||
|
|
.unwrap()
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Invokes the
|
||
|
|
/// [`llvm.roundeven`](https://llvm.org/docs/LangRef.html#llvm-roundeven-intrinsic) intrinsic.
|
||
|
|
pub fn call_float_roundeven<'ctx>(
|
||
|
|
ctx: &CodeGenContext<'ctx, '_>,
|
||
|
|
val: FloatValue<'ctx>,
|
||
|
|
name: Option<&str>,
|
||
|
|
) -> FloatValue<'ctx> {
|
||
|
|
let llvm_float_t = val.get_type();
|
||
|
|
|
||
|
|
let fn_name = format!("llvm.roundeven.{}", get_float_intrinsic_repr(ctx.ctx, llvm_float_t));
|
||
|
|
let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
|
||
|
|
let fn_type = llvm_float_t.fn_type(&[llvm_float_t.into()], false);
|
||
|
|
|
||
|
|
ctx.module.add_function(fn_name.as_str(), fn_type, None)
|
||
|
|
});
|
||
|
|
|
||
|
|
ctx.builder
|
||
|
|
.build_call(intrinsic_fn, &[val.into()], name.unwrap_or_default())
|
||
|
|
.map(CallSiteValue::try_as_basic_value)
|
||
|
|
.map(|v| v.map_left(BasicValueEnum::into_float_value))
|
||
|
|
.map(Either::unwrap_left)
|
||
|
|
.unwrap()
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Invokes the [`llvm.expect`](https://llvm.org/docs/LangRef.html#llvm-expect-intrinsic) intrinsic.
|
||
|
|
pub fn call_expect<'ctx>(
|
||
|
|
ctx: &CodeGenContext<'ctx, '_>,
|
||
|
|
val: IntValue<'ctx>,
|
||
|
|
expected_val: IntValue<'ctx>,
|
||
|
|
name: Option<&str>,
|
||
|
|
) -> IntValue<'ctx> {
|
||
|
|
debug_assert_eq!(val.get_type().get_bit_width(), expected_val.get_type().get_bit_width());
|
||
|
|
|
||
|
|
let llvm_int_t = val.get_type();
|
||
|
|
|
||
|
|
let fn_name = format!("llvm.expect.i{}", llvm_int_t.get_bit_width());
|
||
|
|
let intrinsic_fn = ctx.module.get_function(fn_name.as_str()).unwrap_or_else(|| {
|
||
|
|
let fn_type = llvm_int_t.fn_type(&[llvm_int_t.into(), llvm_int_t.into()], false);
|
||
|
|
|
||
|
|
ctx.module.add_function(fn_name.as_str(), fn_type, None)
|
||
|
|
});
|
||
|
|
|
||
|
|
ctx.builder
|
||
|
|
.build_call(intrinsic_fn, &[val.into(), expected_val.into()], name.unwrap_or_default())
|
||
|
|
.map(CallSiteValue::try_as_basic_value)
|
||
|
|
.map(|v| v.map_left(BasicValueEnum::into_int_value))
|
||
|
|
.map(Either::unwrap_left)
|
||
|
|
.unwrap()
|
||
|
|
}
|