mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Richard Smith
1b335402d1
Move completeness check to the point where the function is defined or first called. This means we also defer deciding whether the function has a return slot until that point. Instead of storing a return slot per function, store the location of the return storage, which may or may not be used, and compute and store a separate flag saying whether to use it at the point of first use or definition. This is the final piece in supporting simple `Make` functions in classes as a replacement for constructors.
79 lines
3.3 KiB
Plaintext
79 lines
3.3 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(a: bool, b: bool, c: bool) -> i32 {
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return if a then if b then 1 else 2 else if c then 3 else 4;
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}
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// CHECK:STDOUT: --- nested.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %.1: i32 = int_literal 1 [template]
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// CHECK:STDOUT: %.2: i32 = int_literal 2 [template]
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// CHECK:STDOUT: %.3: i32 = int_literal 3 [template]
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// CHECK:STDOUT: %.4: i32 = int_literal 4 [template]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: file {
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// CHECK:STDOUT: package: <namespace> = namespace [template] {
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// CHECK:STDOUT: .Core = %Core
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// CHECK:STDOUT: .F = %F
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Core: <namespace> = namespace [template] {}
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// CHECK:STDOUT: %F: <function> = fn_decl @F [template] {
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// CHECK:STDOUT: %a.loc7_6.1: bool = param a
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// CHECK:STDOUT: @F.%a: bool = bind_name a, %a.loc7_6.1
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// CHECK:STDOUT: %b.loc7_15.1: bool = param b
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// CHECK:STDOUT: @F.%b: bool = bind_name b, %b.loc7_15.1
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// CHECK:STDOUT: %c.loc7_24.1: bool = param c
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// CHECK:STDOUT: @F.%c: bool = bind_name c, %c.loc7_24.1
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// CHECK:STDOUT: @F.%return: ref i32 = var <return slot>
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @F(%a: bool, %b: bool, %c: bool) -> i32 {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %a.ref: bool = name_ref a, %a
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// CHECK:STDOUT: if %a.ref br !if.expr.then.loc8_10 else br !if.expr.else.loc8_10
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// CHECK:STDOUT:
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// CHECK:STDOUT: !if.expr.then.loc8_10:
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// CHECK:STDOUT: %b.ref: bool = name_ref b, %b
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// CHECK:STDOUT: if %b.ref br !if.expr.then.loc8_20 else br !if.expr.else.loc8_20
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// CHECK:STDOUT:
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// CHECK:STDOUT: !if.expr.then.loc8_20:
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// CHECK:STDOUT: %.loc8_30: i32 = int_literal 1 [template = constants.%.1]
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// CHECK:STDOUT: br !if.expr.result.loc8_20(%.loc8_30)
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// CHECK:STDOUT:
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// CHECK:STDOUT: !if.expr.else.loc8_20:
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// CHECK:STDOUT: %.loc8_37: i32 = int_literal 2 [template = constants.%.2]
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// CHECK:STDOUT: br !if.expr.result.loc8_20(%.loc8_37)
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// CHECK:STDOUT:
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// CHECK:STDOUT: !if.expr.result.loc8_20:
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// CHECK:STDOUT: %.loc8_20: i32 = block_arg !if.expr.result.loc8_20
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// CHECK:STDOUT: br !if.expr.result.loc8_10(%.loc8_20)
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// CHECK:STDOUT:
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// CHECK:STDOUT: !if.expr.else.loc8_10:
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// CHECK:STDOUT: %c.ref: bool = name_ref c, %c
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// CHECK:STDOUT: if %c.ref br !if.expr.then.loc8_44 else br !if.expr.else.loc8_44
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// CHECK:STDOUT:
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// CHECK:STDOUT: !if.expr.then.loc8_44:
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// CHECK:STDOUT: %.loc8_54: i32 = int_literal 3 [template = constants.%.3]
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// CHECK:STDOUT: br !if.expr.result.loc8_44(%.loc8_54)
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// CHECK:STDOUT:
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// CHECK:STDOUT: !if.expr.else.loc8_44:
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// CHECK:STDOUT: %.loc8_61: i32 = int_literal 4 [template = constants.%.4]
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// CHECK:STDOUT: br !if.expr.result.loc8_44(%.loc8_61)
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// CHECK:STDOUT:
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// CHECK:STDOUT: !if.expr.result.loc8_44:
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// CHECK:STDOUT: %.loc8_44: i32 = block_arg !if.expr.result.loc8_44
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// CHECK:STDOUT: br !if.expr.result.loc8_10(%.loc8_44)
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// CHECK:STDOUT:
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// CHECK:STDOUT: !if.expr.result.loc8_10:
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// CHECK:STDOUT: %.loc8_10: i32 = block_arg !if.expr.result.loc8_10
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// CHECK:STDOUT: return %.loc8_10
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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