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Separate constant emission from function emission. (#3916)

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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>
This commit is contained in:
Richard Smith
2024-04-26 23:27:07 +00:00
committed by GitHub
co-authored by Jon Ross-Perkins Carbon Infra Bot
parent 5627f88c22
commit 79c0b65288
36 changed files with 625 additions and 469 deletions
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toolchain/lower/testdata/array/function_param.carbon
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+2 -2
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@@ -15,7 +15,7 @@ fn G() -> i32 {
// CHECK:STDOUT: ; ModuleID = 'function_param.carbon'
// CHECK:STDOUT: source_filename = "function_param.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: @tuple = internal constant [3 x i32] [i32 1, i32 2, i32 3]
// 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:
@@ -30,7 +30,7 @@ fn G() -> i32 {
// 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 @tuple, i64 12, i1 false)
// 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: }