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llvm-project/compiler-rt/test/xray/TestCases/Posix/c-test.cc

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[XRay][profiler] Part 4: Profiler Mode Wiring Summary: This is part of the larger XRay Profiling Mode effort. This patch implements the wiring required to enable us to actually select the `xray-profiling` mode, and install the handlers to start measuring the time and frequency of the function calls in call stacks. The current way to get the profile information is by working with the XRay API to `__xray_process_buffers(...)`. In subsequent changes we'll implement profile saving to files, similar to how the FDR and basic modes operate, as well as means for converting this format into those that can be loaded/visualised as flame graphs. We will also be extending the accounting tool in LLVM to support stack-based function call accounting. We also continue with the implementation to support building small histograms of latencies for the `FunctionCallTrie::Node` type, to allow us to actually approximate the distribution of latencies per function. Depends on D45758 and D46998. Reviewers: eizan, kpw, pelikan Reviewed By: kpw Subscribers: llvm-commits, mgorny Differential Revision: https://reviews.llvm.org/D44620 llvm-svn: 334469
2018-06-12 11:29:39 +08:00
// RUN: %clang_xray -g -fxray-modes=xray-basic,xray-fdr,xray-profiling -o %t %s
[XRay] rm GLOB || true -> rm -f Summary: `rm -f` does not write diagnostic message when there is no file argument. Reviewers: dberris Subscribers: delcypher, llvm-commits, #sanitizers Differential Revision: https://reviews.llvm.org/D48311 llvm-svn: 335025
2018-06-19 15:11:33 +08:00
// RUN: rm -f xray-log.c-test.*
[XRay][compiler-rt] Remove reliance on C++ ABI features Summary: This fixes http://llvm.org/PR32274. This change adds a test to ensure that we're able to link XRay modes and the runtime to binaries that don't need to depend on the C++ standard library or a C++ ABI library. In particular, we ensure that this will work with C programs compiled+linked with XRay. To make the test pass, we need to change a few things in the XRay runtime implementations to remove the reliance on C++ ABI features. In particular, we change the thread-safe function-local-static initialisation to use pthread_* instead of the C++ features that ensure non-trivial thread-local/function-local-static initialisation. Depends on D47696. Reviewers: dblaikie, jfb, kpw, eizan Reviewed By: kpw Subscribers: echristo, eizan, kpw, mgorny, llvm-commits Differential Revision: https://reviews.llvm.org/D46998 llvm-svn: 334262
2018-06-08 12:00:07 +08:00
// RUN: XRAY_OPTIONS=patch_premain=true:verbosity=1:xray_mode=xray-basic %t \
// RUN: 2>&1 | FileCheck %s
[XRay] rm GLOB || true -> rm -f Summary: `rm -f` does not write diagnostic message when there is no file argument. Reviewers: dberris Subscribers: delcypher, llvm-commits, #sanitizers Differential Revision: https://reviews.llvm.org/D48311 llvm-svn: 335025
2018-06-19 15:11:33 +08:00
// RUN: rm -f xray-log.c-test.*
[XRay][compiler-rt] Remove reliance on C++ ABI features Summary: This fixes http://llvm.org/PR32274. This change adds a test to ensure that we're able to link XRay modes and the runtime to binaries that don't need to depend on the C++ standard library or a C++ ABI library. In particular, we ensure that this will work with C programs compiled+linked with XRay. To make the test pass, we need to change a few things in the XRay runtime implementations to remove the reliance on C++ ABI features. In particular, we change the thread-safe function-local-static initialisation to use pthread_* instead of the C++ features that ensure non-trivial thread-local/function-local-static initialisation. Depends on D47696. Reviewers: dblaikie, jfb, kpw, eizan Reviewed By: kpw Subscribers: echristo, eizan, kpw, mgorny, llvm-commits Differential Revision: https://reviews.llvm.org/D46998 llvm-svn: 334262
2018-06-08 12:00:07 +08:00
//
// REQUIRES: x86_64-target-arch
// REQUIRES: built-in-llvm-tree
__attribute__((xray_always_instrument)) void always() {}
int main() {
always();
}
// CHECK: =={{[0-9].*}}==XRay: Log file in '{{.*}}'