05cf443463
Summary: Before this change, we only emit the XRay attributes in LLVM IR when the -fxray-instrument flag is provided. This may cause issues with thinlto when the final binary is being built/linked with -fxray-instrument, and the constitutent LLVM IR gets re-lowered with xray instrumentation. With this change, we can honour the "never-instrument "attributes provided in the source code and preserve those in the IR. This way, even in thinlto builds, we retain the attributes which say whether functions should never be XRay instrumented. This change addresses llvm.org/PR38922. Reviewers: mboerger, eizan Subscribers: mehdi_amini, dexonsmith, cfe-commits, llvm-commits Differential Revision: https://reviews.llvm.org/D52015 llvm-svn: 342200
27 lines
1.3 KiB
C++
27 lines
1.3 KiB
C++
// RUN: %clang_cc1 %s -fxray-instrument -std=c++11 -x c++ -emit-llvm -o - \
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// RUN: -triple x86_64-unknown-linux-gnu | FileCheck %s
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// RUN: %clang_cc1 %s -fxray-instrument -std=c++11 -x c++ -emit-llvm -o - \
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// RUN: -triple arm-unknown-linux-gnu -target-abi apcs-gnu | FileCheck %s
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// RUN: %clang_cc1 %s -fxray-instrument -std=c++11 -x c++ -emit-llvm -o - \
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// RUN: -triple mips-unknown-linux-gnu | FileCheck %s
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// RUN: %clang_cc1 %s -fxray-instrument -std=c++11 -x c++ -emit-llvm -o - \
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// RUN: -triple mipsel-unknown-linux-gnu | FileCheck %s
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// RUN: %clang_cc1 %s -fxray-instrument -std=c++11 -x c++ -emit-llvm -o - \
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// RUN: -triple mips64-unknown-linux-gnu | FileCheck %s
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// RUN: %clang_cc1 %s -fxray-instrument -std=c++11 -x c++ -emit-llvm -o - \
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// RUN: -triple mips64el-unknown-linux-gnu | FileCheck %s
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// RUN: %clang_cc1 %s -fxray-instrument -std=c++11 -x c++ -emit-llvm -o - \
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// RUN: -triple powerpc64le-unknown-linux-gnu | FileCheck %s
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// Make sure that the LLVM attribute for XRay-annotated functions do show up.
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[[clang::xray_always_instrument]] void foo() {
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// CHECK: define void @_Z3foov() #0
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};
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[[clang::xray_never_instrument]] void bar() {
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// CHECK: define void @_Z3barv() #1
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};
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// CHECK: #0 = {{.*}}"function-instrument"="xray-always"
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// CHECK: #1 = {{.*}}"function-instrument"="xray-never"
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