[clang][Darwin] Refactor header search path logic into the driver

Summary:
This commit moves the logic for determining system, resource and C++
header search paths from CC1 to the driver. This refactor has already
been made for several platforms, but Darwin had been left behind.

This refactor tries to implement the previous search path logic with
perfect accuracy. In particular, the order of all include paths inside
CC1 and all paths that were skipped because nonexistent are conserved
after the refactor. This change was also tested against a code base
of significant size and revealed no problems.

Reviewers: jfb, arphaman

Subscribers: nemanjai, javed.absar, kbarton, christof, jkorous, dexonsmith, jsji, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D61963

llvm-svn: 361278

1 files changed, 118 insertions, 0 deletions

diff --git a/clang/test/Driver/darwin-header-search-libstdcxx.cpp b/clang/test/Driver/darwin-header-search-libstdcxx.cpp
new file mode 100644
index 00000000000..66dff673011
--- /dev/null
+++ b/clang/test/Driver/darwin-header-search-libstdcxx.cpp
@@ -0,0 +1,118 @@
+// General tests that the header search paths for libstdc++ detected by the
+// driver and passed to CC1 are correct on Darwin platforms.
+
+// Check ppc and ppc64
+//
+// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
+// RUN:     -target ppc-apple-darwin \
+// RUN:     -stdlib=libstdc++ \
+// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_libstdcxx_ppc \
+// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_libstdcxx_ppc --check-prefix=CHECK-LIBSTDCXX-PPC %s
+// CHECK-LIBSTDCXX-PPC: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
+// CHECK-LIBSTDCXX-PPC: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1
+// CHECK-LIBSTDCXX-PPC: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/powerpc-apple-darwin10"
+// CHECK-LIBSTDCXX-PPC: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
+// CHECK-LIBSTDCXX-PPC: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0"
+// CHECK-LIBSTDCXX-PPC: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/powerpc-apple-darwin10"
+// CHECK-LIBSTDCXX-PPC: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/backward"
+//
+// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
+// RUN:     -target ppc64-apple-darwin \
+// RUN:     -stdlib=libstdc++ \
+// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_libstdcxx_ppc \
+// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_libstdcxx_ppc --check-prefix=CHECK-LIBSTDCXX-PPC64 %s
+// CHECK-LIBSTDCXX-PPC64: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
+// CHECK-LIBSTDCXX-PPC64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
+// CHECK-LIBSTDCXX-PPC64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/powerpc-apple-darwin10/ppc64"
+// CHECK-LIBSTDCXX-PPC64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
+// CHECK-LIBSTDCXX-PPC64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0"
+// CHECK-LIBSTDCXX-PPC64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/powerpc-apple-darwin10/ppc64"
+// CHECK-LIBSTDCXX-PPC64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/backward"
+
+// Check x86 and x86_64
+//
+// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
+// RUN:     -target i686-apple-darwin \
+// RUN:     -stdlib=libstdc++ \
+// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_libstdcxx_x86 \
+// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_libstdcxx_x86 --check-prefix=CHECK-LIBSTDCXX-X86 %s
+// CHECK-LIBSTDCXX-X86: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
+// CHECK-LIBSTDCXX-X86: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
+// CHECK-LIBSTDCXX-X86: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/i686-apple-darwin10"
+// CHECK-LIBSTDCXX-X86: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
+// CHECK-LIBSTDCXX-X86: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0"
+// CHECK-LIBSTDCXX-X86: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/i686-apple-darwin8"
+// CHECK-LIBSTDCXX-X86: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/backward"
+//
+// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
+// RUN:     -target x86_64-apple-darwin \
+// RUN:     -stdlib=libstdc++ \
+// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_libstdcxx_x86 \
+// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_libstdcxx_x86 --check-prefix=CHECK-LIBSTDCXX-X86_64 %s
+// CHECK-LIBSTDCXX-X86_64: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
+// CHECK-LIBSTDCXX-X86_64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
+// CHECK-LIBSTDCXX-X86_64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/i686-apple-darwin10/x86_64"
+// CHECK-LIBSTDCXX-X86_64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
+// CHECK-LIBSTDCXX-X86_64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0"
+// CHECK-LIBSTDCXX-X86_64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/i686-apple-darwin8"
+// CHECK-LIBSTDCXX-X86_64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.0.0/backward"
+
+// Check arm and thumb
+//
+// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
+// RUN:     -target arm-apple-darwin \
+// RUN:     -stdlib=libstdc++ \
+// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_libstdcxx_arm \
+// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_libstdcxx_arm --check-prefix=CHECK-LIBSTDCXX-ARM %s
+// CHECK-LIBSTDCXX-ARM: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
+// CHECK-LIBSTDCXX-ARM: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
+// CHECK-LIBSTDCXX-ARM: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/arm-apple-darwin10/v7"
+// CHECK-LIBSTDCXX-ARM: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
+// CHECK-LIBSTDCXX-ARM: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
+// CHECK-LIBSTDCXX-ARM: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/arm-apple-darwin10/v6"
+// CHECK-LIBSTDCXX-ARM: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
+//
+// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
+// RUN:     -target arm-apple-darwin \
+// RUN:     -stdlib=libstdc++ \
+// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_libstdcxx_arm \
+// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_libstdcxx_arm --check-prefix=CHECK-LIBSTDCXX-THUMB %s
+// CHECK-LIBSTDCXX-THUMB: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
+// CHECK-LIBSTDCXX-THUMB: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
+// CHECK-LIBSTDCXX-THUMB: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/arm-apple-darwin10/v7"
+// CHECK-LIBSTDCXX-THUMB: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
+// CHECK-LIBSTDCXX-THUMB: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
+// CHECK-LIBSTDCXX-THUMB: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/arm-apple-darwin10/v6"
+// CHECK-LIBSTDCXX-THUMB: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
+
+// Check aarch64
+//
+// RUN: %clang -no-canonical-prefixes %s -### -fsyntax-only 2>&1 \
+// RUN:     -target arm64-apple-darwin \
+// RUN:     -stdlib=libstdc++ \
+// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_libstdcxx_aarch64 \
+// RUN:   | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_libstdcxx_aarch64 --check-prefix=CHECK-LIBSTDCXX-AARCH64 %s
+// CHECK-LIBSTDCXX-AARCH64: "{{[^"]*}}clang{{[^"]*}}" "-cc1"
+// CHECK-LIBSTDCXX-AARCH64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1"
+// CHECK-LIBSTDCXX-AARCH64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/arm64-apple-darwin10"
+// CHECK-LIBSTDCXX-AARCH64: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/4.2.1/backward"
+
+// Make sure we issue a warning when we can't find the path
+//
+// RUN: %clang -no-canonical-prefixes %s -fsyntax-only 2>&1 \
+// RUN:     -target x86_64-apple-darwin \
+// RUN:     -stdlib=libstdc++ \
+// RUN:     -isysroot %S/Inputs/basic_darwin_sdk_no_libstdcxx \
+// RUN:   | FileCheck --check-prefix=CHECK-LIBSTDCXX-MISSING %s
+// CHECK-LIBSTDCXX-MISSING: clang: warning: include path for libstdc++ headers not found; pass '-stdlib=libc++' on the command line to use the libc++ standard library instead
+//
+// RUN: %clang %s -target x86_64-apple-darwin -fsyntax-only 2>&1 \
+// RUN:           -isysroot %S/Inputs/basic_darwin_sdk_no_libstdcxx \
+// RUN:           -stdlib=libc++ \
+// RUN:    | FileCheck -allow-empty --check-prefix=CHECK-LIBSTDCXX-MISSING-1 %s
+// CHECK-LIBSTDCXX-MISSING-1-NOT: warning
+//
+// RUN: %clang %s -target x86_64-apple-darwin -fsyntax-only 2>&1 \
+// RUN:           -isysroot %S/Inputs/basic_darwin_sdk_no_libstdcxx \
+// RUN:    | FileCheck -allow-empty --check-prefix=CHECK-LIBSTDCXX-MISSING-2 %s
+// CHECK-LIBSTDCXX-MISSING-2-NOT: warning