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carbon-lang/toolchain/check/testdata/while/break_continue.carbon
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Richard Smith 3776c068de Unify instruction naming between SemIR and LLVM IR (#3898) 
Factor out `SemIR::InstNamer` and also use it when lowering to LLVM IR.
Automatically name all instructions created with our `IRBuilder` based
on the name computed by the `InstNamer`, and likewise name basic blocks
using the label generated by the `InstNamer`.

Move some of the existing naming logic out from lower into `InstNamer`
so that it's also used in SemIR. In particular, we now name call
instructions after their callee, or after the builtin name for calls to
builtins.

Computing and adding these names isn't completely free. This instruction
naming is designed to be optional, so that we can turn it off for builds
where the LLVM IR will only be converted to assembly and won't be seen
by a human, but so far it's enabled unconditionally. We can tune that
later as needed.
2024-04-19 02:19:30 +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 A() -> bool;
fn B() -> bool;
fn C() -> bool;
fn D() -> bool;
fn E() -> bool;
fn F() -> bool;
fn G() -> bool;
fn H() -> bool;
fn While() {
while (A()) {
if (B()) { continue; }
if (C()) { break; }
while (D()) {
if (E()) { continue; }
if (F()) { break; }
}
if (G()) { continue; }
if (H()) { break; }
}
}
// CHECK:STDOUT: --- break_continue.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = %Core
// CHECK:STDOUT: .A = %A
// CHECK:STDOUT: .B = %B
// CHECK:STDOUT: .C = %C
// CHECK:STDOUT: .D = %D
// CHECK:STDOUT: .E = %E
// CHECK:STDOUT: .F = %F
// CHECK:STDOUT: .G = %G
// CHECK:STDOUT: .H = %H
// CHECK:STDOUT: .While = %While
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core: <namespace> = namespace [template] {}
// CHECK:STDOUT: %A: <function> = fn_decl @A [template] {
// CHECK:STDOUT: @A.%return: ref bool = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %B: <function> = fn_decl @B [template] {
// CHECK:STDOUT: @B.%return: ref bool = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %C: <function> = fn_decl @C [template] {
// CHECK:STDOUT: @C.%return: ref bool = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %D: <function> = fn_decl @D [template] {
// CHECK:STDOUT: @D.%return: ref bool = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %E: <function> = fn_decl @E [template] {
// CHECK:STDOUT: @E.%return: ref bool = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %F: <function> = fn_decl @F [template] {
// CHECK:STDOUT: @F.%return: ref bool = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %G: <function> = fn_decl @G [template] {
// CHECK:STDOUT: @G.%return: ref bool = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %H: <function> = fn_decl @H [template] {
// CHECK:STDOUT: @H.%return: ref bool = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %While: <function> = fn_decl @While [template] {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @A() -> bool;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @B() -> bool;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @C() -> bool;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @D() -> bool;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @E() -> bool;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() -> bool;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @G() -> bool;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @H() -> bool;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @While() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: br !while.cond.loc17
// CHECK:STDOUT:
// CHECK:STDOUT: !while.cond.loc17:
// CHECK:STDOUT: %A.ref: <function> = name_ref A, file.%A [template = file.%A]
// CHECK:STDOUT: %A.call: init bool = call %A.ref()
// CHECK:STDOUT: %.loc17_13.1: bool = value_of_initializer %A.call
// CHECK:STDOUT: %.loc17_13.2: bool = converted %A.call, %.loc17_13.1
// CHECK:STDOUT: if %.loc17_13.2 br !while.body.loc17 else br !while.done.loc17
// CHECK:STDOUT:
// CHECK:STDOUT: !while.body.loc17:
// CHECK:STDOUT: %B.ref: <function> = name_ref B, file.%B [template = file.%B]
// CHECK:STDOUT: %B.call: init bool = call %B.ref()
// CHECK:STDOUT: %.loc18_12.1: bool = value_of_initializer %B.call
// CHECK:STDOUT: %.loc18_12.2: bool = converted %B.call, %.loc18_12.1
// CHECK:STDOUT: if %.loc18_12.2 br !if.then.loc18 else br !if.else.loc18
// CHECK:STDOUT:
// CHECK:STDOUT: !if.then.loc18:
// CHECK:STDOUT: br !while.cond.loc17
// CHECK:STDOUT:
// CHECK:STDOUT: !if.else.loc18:
// CHECK:STDOUT: %C.ref: <function> = name_ref C, file.%C [template = file.%C]
// CHECK:STDOUT: %C.call: init bool = call %C.ref()
// CHECK:STDOUT: %.loc19_12.1: bool = value_of_initializer %C.call
// CHECK:STDOUT: %.loc19_12.2: bool = converted %C.call, %.loc19_12.1
// CHECK:STDOUT: if %.loc19_12.2 br !if.then.loc19 else br !if.else.loc19
// CHECK:STDOUT:
// CHECK:STDOUT: !if.then.loc19:
// CHECK:STDOUT: br !while.done.loc17
// CHECK:STDOUT:
// CHECK:STDOUT: !if.else.loc19:
// CHECK:STDOUT: br !while.cond.loc20
// CHECK:STDOUT:
// CHECK:STDOUT: !while.cond.loc20:
// CHECK:STDOUT: %D.ref: <function> = name_ref D, file.%D [template = file.%D]
// CHECK:STDOUT: %D.call: init bool = call %D.ref()
// CHECK:STDOUT: %.loc20_15.1: bool = value_of_initializer %D.call
// CHECK:STDOUT: %.loc20_15.2: bool = converted %D.call, %.loc20_15.1
// CHECK:STDOUT: if %.loc20_15.2 br !while.body.loc20 else br !while.done.loc20
// CHECK:STDOUT:
// CHECK:STDOUT: !while.body.loc20:
// CHECK:STDOUT: %E.ref: <function> = name_ref E, file.%E [template = file.%E]
// CHECK:STDOUT: %E.call: init bool = call %E.ref()
// CHECK:STDOUT: %.loc21_14.1: bool = value_of_initializer %E.call
// CHECK:STDOUT: %.loc21_14.2: bool = converted %E.call, %.loc21_14.1
// CHECK:STDOUT: if %.loc21_14.2 br !if.then.loc21 else br !if.else.loc21
// CHECK:STDOUT:
// CHECK:STDOUT: !if.then.loc21:
// CHECK:STDOUT: br !while.cond.loc20
// CHECK:STDOUT:
// CHECK:STDOUT: !if.else.loc21:
// CHECK:STDOUT: %F.ref: <function> = name_ref F, file.%F [template = file.%F]
// CHECK:STDOUT: %F.call: init bool = call %F.ref()
// CHECK:STDOUT: %.loc22_14.1: bool = value_of_initializer %F.call
// CHECK:STDOUT: %.loc22_14.2: bool = converted %F.call, %.loc22_14.1
// CHECK:STDOUT: if %.loc22_14.2 br !if.then.loc22 else br !if.else.loc22
// CHECK:STDOUT:
// CHECK:STDOUT: !if.then.loc22:
// CHECK:STDOUT: br !while.done.loc20
// CHECK:STDOUT:
// CHECK:STDOUT: !if.else.loc22:
// CHECK:STDOUT: br !while.cond.loc20
// CHECK:STDOUT:
// CHECK:STDOUT: !while.done.loc20:
// CHECK:STDOUT: %G.ref: <function> = name_ref G, file.%G [template = file.%G]
// CHECK:STDOUT: %G.call: init bool = call %G.ref()
// CHECK:STDOUT: %.loc24_12.1: bool = value_of_initializer %G.call
// CHECK:STDOUT: %.loc24_12.2: bool = converted %G.call, %.loc24_12.1
// CHECK:STDOUT: if %.loc24_12.2 br !if.then.loc24 else br !if.else.loc24
// CHECK:STDOUT:
// CHECK:STDOUT: !if.then.loc24:
// CHECK:STDOUT: br !while.cond.loc17
// CHECK:STDOUT:
// CHECK:STDOUT: !if.else.loc24:
// CHECK:STDOUT: %H.ref: <function> = name_ref H, file.%H [template = file.%H]
// CHECK:STDOUT: %H.call: init bool = call %H.ref()
// CHECK:STDOUT: %.loc25_12.1: bool = value_of_initializer %H.call
// CHECK:STDOUT: %.loc25_12.2: bool = converted %H.call, %.loc25_12.1
// CHECK:STDOUT: if %.loc25_12.2 br !if.then.loc25 else br !if.else.loc25
// CHECK:STDOUT:
// CHECK:STDOUT: !if.then.loc25:
// CHECK:STDOUT: br !while.done.loc17
// CHECK:STDOUT:
// CHECK:STDOUT: !if.else.loc25:
// CHECK:STDOUT: br !while.cond.loc17
// CHECK:STDOUT:
// CHECK:STDOUT: !while.done.loc17:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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