Ben Langmuir 83902c4036 Reapply "[clang][deps] Split translation units into individual -cc1 or other commands"
Attempt to fix the test failures observed in CI:
* Add Option dependency, which caused BUILD_SHARED_LIBS builds to fail
* Adapt tests that accidentally depended on the host platform: platforms
  that don't use an integrated assembler (e.g. AIX) get a different set
  of commands from the driver. Most dependency scanner tests can use
  -fsyntax-only or -E instead of -c to avoid this, and in the rare case
  we want to check -c specifically, set an explicit target so the
  behaviour is independent of the host.

Original commit message follows.

---

Instead of trying to "fix" the original driver invocation by appending
arguments to it, split it into multiple commands, and for each -cc1
command use a CompilerInvocation to give precise control over the
invocation.

This change should make it easier to (in the future) canonicalize the
command-line (e.g. to improve hits in something like ccache), apply
optimizations, or start supporting multi-arch builds, which would
require different modules for each arch.

In the long run it may make sense to treat the TU commands as a
dependency graph, each with their own dependencies on modules or earlier
TU commands, but for now they are simply a list that is executed in
order, and the dependencies are simply duplicated. Since we currently
only support single-arch builds, there is no parallelism available in
the execution.

Differential Revision: https://reviews.llvm.org/D132405
2022-08-31 09:45:11 -07:00

47 lines
1.7 KiB
C

// RUN: rm -rf %t && mkdir %t
// RUN: cp %S/Inputs/diagnostics/* %t
// RUN: sed "s|DIR|%/t|g" %S/Inputs/diagnostics/cdb.json.template > %t/cdb.json
// RUN: clang-scan-deps -compilation-database %t/cdb.json -format experimental-full 2>&1 > %t/result.json
// RUN: cat %t/result.json | sed 's:\\\\\?:/:g' | FileCheck %s -DPREFIX=%/t
// Check that the '-Wno-error=invalid-ios-deployment-target' option is being
// respected and invalid arguments like '-target i386-apple-ios14.0-simulator'
// do not result in an error.
// CHECK-NOT: error:
// CHECK: {
// CHECK-NEXT: "modules": [
// CHECK-NEXT: {
// CHECK-NEXT: "clang-module-deps": [],
// CHECK-NEXT: "clang-modulemap-file": "[[PREFIX]]/module.modulemap",
// CHECK-NEXT: "command-line": [
// CHECK-NEXT: "-cc1"
// CHECK: ],
// CHECK-NEXT: "context-hash": "[[HASH_MOD:.*]]",
// CHECK-NEXT: "file-deps": [
// CHECK-NEXT: "[[PREFIX]]/mod.h"
// CHECK-NEXT: "[[PREFIX]]/module.modulemap"
// CHECK-NEXT: ],
// CHECK-NEXT: "name": "mod"
// CHECK-NEXT: }
// CHECK-NEXT: ],
// CHECK-NEXT: "translation-units": [
// CHECK-NEXT: {
// CHECK: "clang-context-hash": "[[HASH_TU:.*]],
// CHECK-NEXT: "clang-module-deps": [
// CHECK-NEXT: {
// CHECK-NEXT: "context-hash": "[[HASH_MOD]]",
// CHECK-NEXT: "module-name": "mod"
// CHECK-NEXT: }
// CHECK-NEXT: ],
// CHECK-NEXT: "command-line": [
// CHECK-NOT: "-fimplicit-modules"
// CHECK-NOT: "-fimplicit-module-maps"
// CHECK: ],
// CHECK: "file-deps": [
// CHECK-NEXT: "[[PREFIX]]/tu.c"
// CHECK-NEXT: ],
// CHECK-NEXT: "input-file": "[[PREFIX]]/tu.c"
// CHECK-NEXT: }