mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-03 06:25:49 +01:00
Richard Smith
428d11323a
If the initializing representation is the same as the value representation, don't materialize a temporary and perform a value binding. Instead, directly extract the value, using a new `value_of_initializer` node. This removes a lot of redundant `alloca`s from our generated LLVM IR.
43 lines
1.3 KiB
Plaintext
43 lines
1.3 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
|
|
// Exceptions. See /LICENSE for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
// AUTOUPDATE
|
|
|
|
class C {
|
|
var a: i32;
|
|
var b: C*;
|
|
}
|
|
|
|
fn F(c: C) -> i32 {
|
|
return (*c.b).a;
|
|
}
|
|
|
|
fn Run() -> i32 {
|
|
var c: C;
|
|
c.a = 1;
|
|
c.b = &c;
|
|
return F(c);
|
|
}
|
|
|
|
// CHECK:STDOUT: ; ModuleID = 'field.carbon'
|
|
// CHECK:STDOUT: source_filename = "field.carbon"
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: define i32 @F(ptr %c) {
|
|
// CHECK:STDOUT: %b = getelementptr inbounds { i32, ptr }, ptr %c, i32 0, i32 1
|
|
// CHECK:STDOUT: %1 = load ptr, ptr %b, align 8
|
|
// CHECK:STDOUT: %a = getelementptr inbounds { i32, ptr }, ptr %1, i32 0, i32 0
|
|
// CHECK:STDOUT: %2 = load i32, ptr %a, align 4
|
|
// CHECK:STDOUT: ret i32 %2
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: define i32 @main() {
|
|
// CHECK:STDOUT: %c = alloca { i32, ptr }, align 8
|
|
// CHECK:STDOUT: %a = getelementptr inbounds { i32, ptr }, ptr %c, i32 0, i32 0
|
|
// CHECK:STDOUT: store i32 1, ptr %a, align 4
|
|
// CHECK:STDOUT: %b = getelementptr inbounds { i32, ptr }, ptr %c, i32 0, i32 1
|
|
// CHECK:STDOUT: store ptr %c, ptr %b, align 8
|
|
// CHECK:STDOUT: %F = call i32 @F(ptr %c)
|
|
// CHECK:STDOUT: ret i32 %F
|
|
// CHECK:STDOUT: }
|