9d4837f47c
This PR builds on top of #113984 and attempts to avoid allocating input file paths eagerly. Instead, the `InputFileInfo` type used by `ASTReader` now only holds `StringRef`s that point into the PCM file buffer, and the full input file paths get resolved on demand. The dependency scanner makes use of this in a bit of a roundabout way: `ModuleDeps` now only holds (an owning copy of) the short unresolved input file paths, which get resolved lazily. This can be a big win, I'm seeing up to a 5% speedup.
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
// RUN: rm -rf %t
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// RUN: split-file %s %t
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//--- tu.m
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#include "first.h"
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//--- first/module.modulemap
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module first { header "first.h" }
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//--- first/first.h
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#include "second.h"
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//--- second/module.modulemap
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module second { header "second.h" }
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//--- second/second.h
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#include "third.h"
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//--- third/module.modulemap
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module third { header "third.h" }
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//--- third/third.h
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// empty
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//--- cdb.json.template
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[{
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"file": "DIR/tu.c",
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"directory": "DIR",
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"command": "clang -I DIR/first -I DIR/second -I DIR/third -fmodules -fmodules-cache-path=DIR/cache -c DIR/tu.m -o DIR/tu.o"
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}]
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// RUN: sed "s|DIR|%/t|g" %t/cdb.json.template > %t/cdb.json
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// RUN: clang-scan-deps -compilation-database %t/cdb.json -format experimental-full > %t/result.json
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// RUN: cat %t/result.json | sed 's:\\\\\?:/:g' | FileCheck %s -DPREFIX=%/t
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// CHECK: {
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// CHECK-NEXT: "modules": [
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// CHECK-NEXT: {
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// CHECK-NEXT: "clang-module-deps": [
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// CHECK-NEXT: {
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// CHECK-NEXT: "context-hash": "{{.*}}",
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// CHECK-NEXT: "module-name": "second"
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// CHECK-NEXT: }
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// CHECK-NEXT: ],
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// CHECK-NEXT: "clang-modulemap-file": "[[PREFIX]]/first/module.modulemap",
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// CHECK-NEXT: "command-line": [
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// CHECK-NEXT: "-cc1",
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// CHECK-NOT: "-fmodule-map-file=[[PREFIX]]/third/module.modulemap"
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// CHECK: "-fmodule-map-file=[[PREFIX]]/second/module.modulemap"
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// CHECK-NOT: "-fmodule-map-file=[[PREFIX]]/third/module.modulemap"
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// CHECK: ],
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// CHECK-NEXT: "context-hash": "{{.*}}",
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// CHECK-NEXT: "file-deps": [
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// CHECK-NEXT: "[[PREFIX]]/first/module.modulemap",
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// CHECK-NEXT: "[[PREFIX]]/first/first.h",
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// CHECK-NEXT: "[[PREFIX]]/second/module.modulemap"
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// CHECK-NEXT: ],
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// CHECK-NEXT: "link-libraries": [],
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// CHECK-NEXT: "name": "first"
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// CHECK-NEXT: }
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// CHECK: ]
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// CHECK: }
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