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Simplify construction of floating point constants.

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This commit is contained in:
Nick Lewycky
2019-06-25 16:03:40 -07:00
parent 55394b4f06
commit 70247a0c6e
1 changed files with 2 additions and 12 deletions
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14
lib/llvm-backend/src/code.rs
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@ -849,22 +849,12 @@ impl FunctionCodeGenerator<CodegenError> for LLVMFunctionCodeGenerator {
}
Operator::F32Const { value } => {
let bits = intrinsics.i32_ty.const_int(value.bits() as u64, false);
let space =
builder.build_alloca(intrinsics.f32_ty.as_basic_type_enum(), "const_space");
let i32_space =
builder.build_pointer_cast(space, intrinsics.i32_ptr_ty, "i32_space");
builder.build_store(i32_space, bits);
let f = builder.build_load(space, "f");
let f = builder.build_bitcast(bits, intrinsics.f32_ty, "f");
state.push1(f);
}
Operator::F64Const { value } => {
let bits = intrinsics.i64_ty.const_int(value.bits(), false);
let space =
builder.build_alloca(intrinsics.f64_ty.as_basic_type_enum(), "const_space");
let i64_space =
builder.build_pointer_cast(space, intrinsics.i64_ptr_ty, "i32_space");
builder.build_store(i64_space, bits);
let f = builder.build_load(space, "f");
let f = builder.build_bitcast(bits, intrinsics.f64_ty, "f");
state.push1(f);
}