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carbon-lang/toolchain/driver/testdata/compile/optimize/optimize_default.carbon
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Richard Smith cefa0397bb More fixes to package and library fingerprinting. (#7297) 
Fix import logic to make all imported packages be children of the
`NameScopeId::Package` scope. Previously, indirectly-imported packages
would end up as children of their importing package's scope, which
resulted in them not being treated as packages at all, and in particular
not being fingerprinted as packages.

Fixing that caused a failure in the fingerprinting logic as we started
to encounter packages with no correspoding import scopes. Instead of
looking for import scopes, use a simpler mechanism to map packages to
their package names, and clean up.

Unfortunately the latter change churns all the fingerprints again :(
Hopefully this is the last time for a while.
2026-06-04 17:41:46 +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
//
// ARGS: compile foo.carbon --target=x86_64-unknown-linux-gnu --phase=optimize --dump-llvm-ir --exclude-dump-file-prefix=%{core}
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/driver/testdata/compile/optimize/optimize_default.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/driver/testdata/compile/optimize/optimize_default.carbon
// --- foo.carbon
import Core library "range";
fn Rand() -> i32;
fn NoInlineWithOz() -> i32 {
return Rand() + Rand();
}
fn CallNoInlineWithOptSize() -> i32 {
// Should not be inlined with --optimize=size, because the body is larger than the call.
return NoInlineWithOz();
}
fn VectorizedWithOptSpeed(a: array(i32, 65536)*) {
// Should be vectorized with --optimize=speed, but not in other modes.
var n: i32 = 0;
while (n < 65536) {
(*a)[n] *= 2;
++n;
}
}
// CHECK:STDOUT: ; ModuleID = 'foo.carbon'
// CHECK:STDOUT: source_filename = "foo.carbon"
// CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
// CHECK:STDOUT:
// CHECK:STDOUT: declare i32 @_CRand.Main() local_unnamed_addr
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CNoInlineWithOz.Main() local_unnamed_addr #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %Rand.call.loc7_15 = tail call i32 @_CRand.Main() #0, !dbg !8
// CHECK:STDOUT: %Rand.call.loc7_24 = tail call i32 @_CRand.Main() #0, !dbg !9
// CHECK:STDOUT: %Int.as.AddWith.impl.Op.call = add i32 %Rand.call.loc7_24, %Rand.call.loc7_15, !dbg !8
// CHECK:STDOUT: ret i32 %Int.as.AddWith.impl.Op.call, !dbg !10
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CCallNoInlineWithOptSize.Main() local_unnamed_addr #0 !dbg !11 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %Rand.call.loc7_15.i = tail call i32 @_CRand.Main() #0, !dbg !12
// CHECK:STDOUT: %Rand.call.loc7_24.i = tail call i32 @_CRand.Main() #0, !dbg !14
// CHECK:STDOUT: %Int.as.AddWith.impl.Op.call.i = add i32 %Rand.call.loc7_24.i, %Rand.call.loc7_15.i, !dbg !12
// CHECK:STDOUT: ret i32 %Int.as.AddWith.impl.Op.call.i, !dbg !15
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nofree norecurse nosync nounwind memory(argmem: readwrite)
// CHECK:STDOUT: define void @_CVectorizedWithOptSpeed.Main(ptr captures(none) %a) local_unnamed_addr #1 !dbg !16 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: br label %while.body, !dbg !22
// CHECK:STDOUT:
// CHECK:STDOUT: while.body: ; preds = %entry, %while.body
// CHECK:STDOUT: %n.var.03 = phi i32 [ 0, %entry ], [ %1, %while.body ]
// CHECK:STDOUT: %0 = zext nneg i32 %n.var.03 to i64, !dbg !23
// CHECK:STDOUT: %.loc19_11.array.index = getelementptr inbounds nuw [4 x i8], ptr %a, i64 %0, !dbg !23
// CHECK:STDOUT: %Int.as.MulAssignWith.impl.Op.call = load i32, ptr %.loc19_11.array.index, align 4, !dbg !23
// CHECK:STDOUT: %Int.as.MulAssignWith.impl.Op.call1 = shl i32 %Int.as.MulAssignWith.impl.Op.call, 1, !dbg !23
// CHECK:STDOUT: store i32 %Int.as.MulAssignWith.impl.Op.call1, ptr %.loc19_11.array.index, align 4, !dbg !23
// CHECK:STDOUT: %1 = add nuw nsw i32 %n.var.03, 1, !dbg !24
// CHECK:STDOUT: %Int.as.OrderedWith.impl.Less.call = icmp samesign ult i32 %n.var.03, 65535, !dbg !39
// CHECK:STDOUT: br i1 %Int.as.OrderedWith.impl.Less.call, label %while.body, label %while.done, !dbg !22
// CHECK:STDOUT:
// CHECK:STDOUT: while.done: ; preds = %while.body
// CHECK:STDOUT: ret void, !dbg !40
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder label %while.body, { 1, 0 }
// CHECK:STDOUT: uselistorder i32 %n.var.03, { 0, 2, 1 }
// CHECK:STDOUT: uselistorder ptr %.loc19_11.array.index, { 1, 0 }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.5e27612b9dd31a14:core.Destroy.Core"(ptr %self) local_unnamed_addr #0 !dbg !41 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !44
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT: attributes #1 = { nofree norecurse nosync nounwind memory(argmem: readwrite) }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "foo.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "NoInlineWithOz", linkageName: "_CNoInlineWithOz.Main", scope: null, file: !3, line: 6, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{!7}
// CHECK:STDOUT: !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !8 = !DILocation(line: 7, column: 10, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 7, column: 19, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 7, column: 3, scope: !4)
// CHECK:STDOUT: !11 = distinct !DISubprogram(name: "CallNoInlineWithOptSize", linkageName: "_CCallNoInlineWithOptSize.Main", scope: null, file: !3, line: 10, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !12 = !DILocation(line: 7, column: 10, scope: !4, inlinedAt: !13)
// CHECK:STDOUT: !13 = distinct !DILocation(line: 12, column: 10, scope: !11)
// CHECK:STDOUT: !14 = !DILocation(line: 7, column: 19, scope: !4, inlinedAt: !13)
// CHECK:STDOUT: !15 = !DILocation(line: 12, column: 3, scope: !11)
// CHECK:STDOUT: !16 = distinct !DISubprogram(name: "VectorizedWithOptSpeed", linkageName: "_CVectorizedWithOptSpeed.Main", scope: null, file: !3, line: 15, type: !17, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !20)
// CHECK:STDOUT: !17 = !DISubroutineType(types: !18)
// CHECK:STDOUT: !18 = !{null, !19}
// CHECK:STDOUT: !19 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !20 = !{!21}
// CHECK:STDOUT: !21 = !DILocalVariable(arg: 1, scope: !16, type: !19)
// CHECK:STDOUT: !22 = !DILocation(line: 18, column: 9, scope: !16)
// CHECK:STDOUT: !23 = !DILocation(line: 19, column: 5, scope: !16)
// CHECK:STDOUT: !24 = !DILocation(line: 306, column: 3, scope: !25, inlinedAt: !32)
// CHECK:STDOUT: !25 = distinct !DISubprogram(name: "Op", linkageName: "_COp:thunk:AddAssignWith.6f9e8c1abf8bb3ea.Core:Int.9452f4c51951679b.Core:AddAssignWith.bcc2a64c00f3554f.Core.44914b6ff6901661", scope: null, file: !26, line: 306, type: !27, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !29)
// CHECK:STDOUT: !26 = !DIFile(filename: "{{.*}}/prelude/types/int.carbon", directory: "")
// CHECK:STDOUT: !27 = !DISubroutineType(types: !28)
// CHECK:STDOUT: !28 = !{null, !7, !7}
// CHECK:STDOUT: !29 = !{!30, !31}
// CHECK:STDOUT: !30 = !DILocalVariable(arg: 1, scope: !25, type: !7)
// CHECK:STDOUT: !31 = !DILocalVariable(arg: 2, scope: !25, type: !7)
// CHECK:STDOUT: !32 = distinct !DILocation(line: 372, column: 5, scope: !33, inlinedAt: !38)
// CHECK:STDOUT: !33 = distinct !DISubprogram(name: "Op", linkageName: "_COp.Int.9452f4c51951679b.Core:Inc.Core.be1e879c1ad406d8", scope: null, file: !26, line: 370, type: !34, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !36)
// CHECK:STDOUT: !34 = !DISubroutineType(types: !35)
// CHECK:STDOUT: !35 = !{null, !7}
// CHECK:STDOUT: !36 = !{!37}
// CHECK:STDOUT: !37 = !DILocalVariable(arg: 1, scope: !33, type: !7)
// CHECK:STDOUT: !38 = distinct !DILocation(line: 20, column: 5, scope: !16)
// CHECK:STDOUT: !39 = !DILocation(line: 18, column: 10, scope: !16)
// CHECK:STDOUT: !40 = !DILocation(line: 15, column: 1, scope: !16)
// CHECK:STDOUT: !41 = distinct !DISubprogram(name: "Op", linkageName: "_COp.5e27612b9dd31a14:core.Destroy.Core", scope: null, file: !3, line: 17, type: !34, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !42)
// CHECK:STDOUT: !42 = !{!43}
// CHECK:STDOUT: !43 = !DILocalVariable(arg: 1, scope: !41, type: !7)
// CHECK:STDOUT: !44 = !DILocation(line: 17, column: 3, scope: !41)
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