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carbon-lang/toolchain/lower/testdata/array/function_param.carbon
T
79c0b65288 Separate constant emission from function emission. (#3916)
Make constant emission non-recursive, and stop building a bogus
FunctionContext to emit constants.

To support this, move `InstConstantKind` from the typed instruction
definition into the `.def` file, and add more macros to allow us to
generate case labels based on whether an instruction is a constant.

---------

Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
Co-authored-by: Carbon Infra Bot <carbon-external-infra@google.com>
2024-04-26 23:27:07 +00:00

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// 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
fn F(arr: [i32; 3], i: i32) -> i32 {
return arr[i];
}
fn G() -> i32 {
return F((1, 2, 3), 1);
}
// CHECK:STDOUT: ; ModuleID = 'function_param.carbon'
// CHECK:STDOUT: source_filename = "function_param.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: @const.loc12_11.1 = internal constant [3 x i32] [i32 1, i32 2, i32 3]
// CHECK:STDOUT:
// CHECK:STDOUT: define i32 @F(ptr %arr, i32 %i) {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc8_15.2.array.index = getelementptr inbounds [3 x i32], ptr %arr, i32 0, i32 %i
// CHECK:STDOUT: %.loc8_15.3 = load i32, ptr %.loc8_15.2.array.index, align 4
// CHECK:STDOUT: ret i32 %.loc8_15.3
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define i32 @G() {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc12_20.2.temp = alloca [3 x i32], align 4
// CHECK:STDOUT: %.loc12_20.4.array.index = getelementptr inbounds [3 x i32], ptr %.loc12_20.2.temp, i32 0, i32 0
// CHECK:STDOUT: %.loc12_20.7.array.index = getelementptr inbounds [3 x i32], ptr %.loc12_20.2.temp, i32 0, i32 1
// CHECK:STDOUT: %.loc12_20.10.array.index = getelementptr inbounds [3 x i32], ptr %.loc12_20.2.temp, i32 0, i32 2
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %.loc12_20.2.temp, ptr align 4 @const.loc12_11.1, i64 12, i1 false)
// CHECK:STDOUT: %F.call = call i32 @F(ptr %.loc12_20.2.temp, i32 1)
// CHECK:STDOUT: ret i32 %F.call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }