mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +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.
35 lines
1.3 KiB
Plaintext
35 lines
1.3 KiB
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 F(arr: [i32; 3], i: i32) -> i32 {
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return arr[i];
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}
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fn G() -> i32 {
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return F((1, 2, 3), 1);
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}
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// CHECK:STDOUT: ; ModuleID = 'function_param.carbon'
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// CHECK:STDOUT: source_filename = "function_param.carbon"
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// CHECK:STDOUT:
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// CHECK:STDOUT: define i32 @F(ptr %arr, i32 %i) {
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// CHECK:STDOUT: %array.index = getelementptr inbounds [3 x i32], ptr %arr, i32 0, i32 %i
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// CHECK:STDOUT: %1 = load i32, ptr %array.index, 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 @G() {
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// CHECK:STDOUT: %temp = alloca [3 x i32], align 4
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// CHECK:STDOUT: %array.index = getelementptr inbounds [3 x i32], ptr %temp, i32 0, i32 0
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// CHECK:STDOUT: store i32 1, ptr %array.index, align 4
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// CHECK:STDOUT: %array.index1 = getelementptr inbounds [3 x i32], ptr %temp, i32 0, i32 1
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// CHECK:STDOUT: store i32 2, ptr %array.index1, align 4
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// CHECK:STDOUT: %array.index2 = getelementptr inbounds [3 x i32], ptr %temp, i32 0, i32 2
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// CHECK:STDOUT: store i32 3, ptr %array.index2, align 4
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// CHECK:STDOUT: %F = call i32 @F(ptr %temp, i32 1)
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// CHECK:STDOUT: ret i32 %F
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// CHECK:STDOUT: }
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