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llvm-project/clang/test/Driver/arm-security-options.c
Fangrui Song f39c399d9d [Driver] -###: exit with code 1 if hasErrorOccurred 
The exit code for -### is inconsistent. Unrecognized options lead to
exit code 1, as expected. However, most others errors (including invalid
option value) lead to exit code 0, differing from GCC and most utilities.

This is a longstanding quirk of -###, and we didn't fix it because many
driver tests need adjustment.

Change -### to be similar to -fdriver-only -v and exit with code 1.

This requires fixing many driver tests, but the end result gives us
stronger tests.

* Existing `RUN: %clang -### ...` tests usually don't use `CHECK-NOT: error:` or `--implicit-check-not=error:`.
  If a change introduces an error, such a change usually cannot be detected.
* Many folks contributing new tests don't know `-fdriver-only -v`.
  To test no driver error/warning for new tests, they can use the familiar `-### -Werror`
  instead of `-fdriver-only -v -Werror`.

An incomplete list of prerequisite test improvement:

* 2f79bb10461d114783a1548201928549ace09755: add -nogpulib to some AMDGPU tests
* 9155e517e6e1cda474d0d0fa82f71696c325bc10: add --cuda-path= (test w/ and w/o /usr/local/cuda)
* 80765ede5bbcca1364c2d4ae06127011eaba6389: -mcpu=native may return either 0 or 1, depending on whether `--target=` specifies a native target
* abae53f43f0d1da8d8e421f4a628d7ec64d6e365: fix -fuse-ld=lld misuses (test w/o and w/o /usr/local/bin/ld.lld)
* ab68df505e5bb8808ee44f53044b50ca7575098e: add -resource-dir= and -fvisibility=hidden
 to some -fsanitize=cfi tests
* d5ca1602f64114f612ad5630f04e4aa90591c78d: --rtlib=platform without --unwindlib= may fail if CLANG_DEFAULT_UNWINDLIB=unwindlib

Reviewed By: jhuber6, yaxunl, dblaikie

Differential Revision: https://reviews.llvm.org/D156363
2023-08-01 13:23:51 -07:00

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// Check the -mbranch-protection=option
// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main -c %s -### -mbranch-protection=pac-ret 2>&1 | \
// RUN: FileCheck %s --check-prefix=RA-NON-LEAF --check-prefix=KEY-A --check-prefix=BTE-OFF
// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main -c %s -### -mbranch-protection=pac-ret+leaf 2>&1 | \
// RUN: FileCheck %s --check-prefix=RA-ALL --check-prefix=KEY-A --check-prefix=BTE-OFF
// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main -c %s -### -mbranch-protection=pac-ret+leaf+b-key 2>&1 | \
// RUN: FileCheck %s --check-prefix=RA-ALL --check-prefix=KEY-B --check-prefix=BTE-OFF
// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main -c %s -### -mbranch-protection=pac-ret+b-key 2>&1 | \
// RUN: FileCheck %s --check-prefix=RA-NON-LEAF --check-prefix=KEY-B --check-prefix=BTE-OFF
// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main -c %s -### -mbranch-protection=bti 2>&1 | \
// RUN: FileCheck %s --check-prefix=RA-OFF --check-prefix=BTE-ON
// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main -c %s -### -mbranch-protection=bti+pac-ret 2>&1 | \
// RUN: FileCheck %s --check-prefix=RA-NON-LEAF --check-prefix=KEY-A --check-prefix=BTE-ON
// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main -c %s -### -mbranch-protection=bti+pac-ret+leaf 2>&1 | \
// RUN: FileCheck %s --check-prefix=RA-ALL --check-prefix=KEY-A --check-prefix=BTE-ON
// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main -c %s -### -mbranch-protection=bti 2>&1 | \
// RUN: FileCheck %s --check-prefix=RA-OFF --check-prefix=BTE-ON
// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main -c %s -### -mbranch-protection=bti+pac-ret+b-key 2>&1 | \
// RUN: FileCheck %s --check-prefix=RA-NON-LEAF --check-prefix=KEY-B --check-prefix=BTE-ON
// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main -c %s -### -mbranch-protection=bti+pac-ret+leaf+b-key 2>&1 | \
// RUN: FileCheck %s --check-prefix=RA-ALL --check-prefix=KEY-B --check-prefix=BTE-ON
// -mbranch-protection with standard
// RUN: %clang -target arm-arm-none-eabi -march=armv8.1-m.main -c %s -### -mbranch-protection=standard 2>&1 | \
// RUN: FileCheck %s --check-prefix=RA-NON-LEAF --check-prefix=KEY-A --check-prefix=BTE-ON
// RUN: not %clang --target=arm-arm-none-eabi -march=armv8.1-m.main -c %s -### -mbranch-protection=bar 2>&1 | \
// RUN: FileCheck %s --check-prefix=BAD-BP-PROTECTION
// RUN: not %clang --target=arm-arm-none-eabi -march=armv8.1-m.main -c %s -### -mbranch-protection=pac-ret+bti+b-key 2>&1 | \
// RUN: FileCheck %s --check-prefix=BAD-B-KEY-COMBINATION
// RUN: not %clang --target=arm-arm-none-eabi -march=armv8.1-m.main -c %s -### -mbranch-protection=pac-ret+bti+leaf 2>&1 | \
// RUN: FileCheck %s --check-prefix=BAD-LEAF-COMBINATION
// -mbranch-protection with supported architectures other than v8.1-m.main
// RUN: %clang -target arm-arm-none-eabi -march=armv8-m.main -c %s -### -mbranch-protection=pac-ret 2>&1 | \
// RUN: FileCheck %s --check-prefix=RA-NON-LEAF --check-prefix=KEY-A --check-prefix=BTE-OFF
// RUN: %clang -target arm-arm-none-eabi -march=armv7-m -c %s -### -mbranch-protection=pac-ret 2>&1 | \
// RUN: FileCheck %s --check-prefix=RA-NON-LEAF --check-prefix=KEY-A --check-prefix=BTE-OFF
// RUN: %clang -target arm-arm-none-eabi -march=armv7e-m -c %s -### -mbranch-protection=pac-ret 2>&1 | \
// RUN: FileCheck %s --check-prefix=RA-NON-LEAF --check-prefix=KEY-A --check-prefix=BTE-OFF
// -mbranch-protection with unsupported architectures
// RUN: %clang -target arm-arm-none-eabi -march=armv6-m -c %s -### -mbranch-protection=bti 2>&1 | \
// RUN: FileCheck %s --check-prefix=INCOMPATIBLE-ARCH
// RUN: %clang -target arm-arm-none-eabi -march=armv8-m.base -c %s -### -mbranch-protection=bti 2>&1 | \
// RUN: FileCheck %s --check-prefix=INCOMPATIBLE-ARCH
// RUN: %clang -target arm-arm-none-eabi -march=armv8-a -c %s -### -mbranch-protection=bti 2>&1 | \
// RUN: FileCheck %s --check-prefix=INCOMPATIBLE-ARCH
// RUN: %clang -target arm-arm-none-eabi -march=armv8-r -c %s -### -mbranch-protection=bti 2>&1 | \
// RUN: FileCheck %s --check-prefix=INCOMPATIBLE-ARCH
// RUN: %clang -target arm-arm-none-eabi -march=armv7-a -c %s -### -mbranch-protection=bti 2>&1 | \
// RUN: FileCheck %s --check-prefix=INCOMPATIBLE-ARCH
/// RUN: %clang -target arm-arm-none-eabi -march=armv7-a -mthumb -c %s -### -mbranch-protection=bti 2>&1 | \
/// RUN: FileCheck %s --check-prefix=INCOMPATIBLE-ARCH
// RUN: %clang -target arm-arm-none-eabi -march=armv7-r -c %s -### -mbranch-protection=bti 2>&1 | \
// RUN: FileCheck %s --check-prefix=INCOMPATIBLE-ARCH
// RA-OFF: "-msign-return-address=none"
// RA-NON-LEAF: "-msign-return-address=non-leaf"
// RA-ALL: "-msign-return-address=all"
// KEY-A: "-msign-return-address-key=a_key"
// KEY-B: "-msign-return-address-key=b_key"
// BTE-OFF-NOT: "-mbranch-target-enforce"
// BTE-ON: "-mbranch-target-enforce"
// BAD-BP-PROTECTION: unsupported argument 'bar' to option '-mbranch-protection='
// BAD-B-KEY-COMBINATION: unsupported argument 'b-key' to option '-mbranch-protection='
// BAD-LEAF-COMBINATION: unsupported argument 'leaf' to option '-mbranch-protection='
// INCOMPATIBLE-ARCH: '-mbranch-protection=' option is incompatible with the '{{.*}}' architecture
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