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https://github.com/carbon-language/carbon-lang.git
synced 2026-09-27 22:02:33 +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.
30 lines
791 B
Plaintext
30 lines
791 B
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// AUTOUPDATE
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fn G(p: i32*) -> i32 {
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return *p;
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}
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fn F() -> i32 {
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var n: i32 = 0;
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return G(&n);
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}
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// CHECK:STDOUT: ; ModuleID = 'basic.carbon'
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// CHECK:STDOUT: source_filename = "basic.carbon"
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// CHECK:STDOUT:
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// CHECK:STDOUT: define i32 @G(ptr %p) {
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// CHECK:STDOUT: %1 = load i32, ptr %p, align 4
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// CHECK:STDOUT: ret i32 %1
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: define i32 @F() {
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// CHECK:STDOUT: %n = alloca i32, align 4
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// CHECK:STDOUT: store i32 0, ptr %n, align 4
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// CHECK:STDOUT: %G = call i32 @G(ptr %n)
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// CHECK:STDOUT: ret i32 %G
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// CHECK:STDOUT: }
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