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Xing Xue ed2ba72592 [lit][tests]Add feature libcxx-used and use it in llvm-*-fuzzer tests
When a LLVM binary such as llvm-*-fuzzer is built with libc++, it has dependency on libc++. The path to find shared libraries specified in llvm-*-fuzzer is relative. As a result, these binaries cannot be copied to an arbitrary directory and launched from there. Changes in this patch add a LIT feature to indicate that libc++ is used to build and, based on the feature exclude test cases that test by copying llvm-*-fuzzer binaries to a directory.

Reviewers: hubert.reinterpretcast, dberris, amyk, jasonliu, EricWF

Reviewed By: hubert.reinterpretcast, amyk

Subscribers: javed.absar, jsji, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D61265

llvm-svn: 360672
2019-05-14 13:54:33 +00:00

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LLVM

; If the binary looks up libraries using an rpath, we can't test this
; without copying the whole lib dir or polluting the build dir.
; REQUIRES: static-libs
; REQUIRES: x86-registered-target
; The above also applies if the binary is built with libc++.
; UNSUPPORTED: libcxx-used
; This test is really flaky on Windows. On Windows, executables and DLLs cannot
; be deleted or written while they are loaded. The OS unlocks the file some
; time after the process terminates, so if 'rm' runs too quickly, it will fail
; with "access denied".
; UNSUPPORTED: system-windows
; Temporary bitcode file
; RUN: opt -o %t.input %s
; RUN: cp llvm-opt-fuzzer %t.bin--
; RUN: not %t.bin-- %t.input 2>&1 | FileCheck -check-prefix=EMPTY %s
; EMPTY: -mtriple must be specified
; RUN: cp llvm-opt-fuzzer %t.bin--x86_64
; RUN: not %t.bin--x86_64 %t.input 2>&1 | FileCheck -check-prefix=PASSES %s
; PASSES: at least one pass should be specified
; RUN: cp llvm-opt-fuzzer %t.bin--x86_64-unknown
; RUN: not %t.bin--x86_64-unknown %t.input 2>&1 | FileCheck -check-prefix=UNKNOWN %s
; UNKNOWN: Unknown option: unknown
; RUN: cp llvm-opt-fuzzer %t.bin--x86_64-instcombine
; RUN: %t.bin--x86_64-instcombine %t.input 2>&1 | FileCheck -check-prefix=CORRECT %s
; CORRECT: Injected args: -mtriple=x86_64 -passes=instcombine
; CORRECT: Running