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[XRay][clang] Emit "never-instrument" attribute 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
2018-09-14 09:59:12 +08:00
// We want to ensure that the "never instrument" attributes show up even if we
// explicitly turn off XRay instrumentation.
//
[Frontend] Delete some unneeded CC1 options
2020-01-24 13:29:09 +08:00
/// -fno-xray-instrument is the default. It does not produce a CC1 option.
// RUN: %clang_cc1 %s -std=c++11 -x c++ -emit-llvm -o - \
[XRay][clang] Emit "never-instrument" attribute 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
2018-09-14 09:59:12 +08:00
// RUN: -triple x86_64-unknown-linux-gnu | FileCheck %s
[Frontend] Delete some unneeded CC1 options
2020-01-24 13:29:09 +08:00
// RUN: %clang_cc1 %s -std=c++11 -x c++ -emit-llvm -o - \
[XRay][clang] Emit "never-instrument" attribute 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
2018-09-14 09:59:12 +08:00
// RUN: -triple arm-unknown-linux-gnu -target-abi apcs-gnu | FileCheck %s
[Frontend] Delete some unneeded CC1 options
2020-01-24 13:29:09 +08:00
// RUN: %clang_cc1 %s -std=c++11 -x c++ -emit-llvm -o - \
[XRay][clang] Emit "never-instrument" attribute 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
2018-09-14 09:59:12 +08:00
// RUN: -triple mips-unknown-linux-gnu | FileCheck %s
[Frontend] Delete some unneeded CC1 options
2020-01-24 13:29:09 +08:00
// RUN: %clang_cc1 %s -std=c++11 -x c++ -emit-llvm -o - \
[XRay][clang] Emit "never-instrument" attribute 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
2018-09-14 09:59:12 +08:00
// RUN: -triple mipsel-unknown-linux-gnu | FileCheck %s
[Frontend] Delete some unneeded CC1 options
2020-01-24 13:29:09 +08:00
// RUN: %clang_cc1 %s -std=c++11 -x c++ -emit-llvm -o - \
[XRay][clang] Emit "never-instrument" attribute 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
2018-09-14 09:59:12 +08:00
// RUN: -triple mips64-unknown-linux-gnu | FileCheck %s
[Frontend] Delete some unneeded CC1 options
2020-01-24 13:29:09 +08:00
// RUN: %clang_cc1 %s -std=c++11 -x c++ -emit-llvm -o - \
[XRay][clang] Emit "never-instrument" attribute 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
2018-09-14 09:59:12 +08:00
// RUN: -triple mips64el-unknown-linux-gnu | FileCheck %s
[Frontend] Delete some unneeded CC1 options
2020-01-24 13:29:09 +08:00
// RUN: %clang_cc1 %s -std=c++11 -x c++ -emit-llvm -o - \
[XRay][clang] Emit "never-instrument" attribute 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
2018-09-14 09:59:12 +08:00
// RUN: -triple powerpc64le-unknown-linux-gnu | FileCheck %s
[[clang::xray_always_instrument]] void foo() {
Revert "[CodeGenModule] Assume dso_local for -fpic -fno-semantic-interposition" This reverts commit 789a46f2d742e11edaade28cb59a0f4d2a1d770e. Accidentally committed.
2020-02-04 02:09:39 +08:00
// CHECK: define void @_Z3foov() #0
[XRay][clang] Emit "never-instrument" attribute 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
2018-09-14 09:59:12 +08:00
}
[[clang::xray_never_instrument]] void bar() {
Revert "[CodeGenModule] Assume dso_local for -fpic -fno-semantic-interposition" This reverts commit 789a46f2d742e11edaade28cb59a0f4d2a1d770e. Accidentally committed.
2020-02-04 02:09:39 +08:00
// CHECK: define void @_Z3barv() #1
[XRay][clang] Emit "never-instrument" attribute 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
2018-09-14 09:59:12 +08:00
}
// CHECK-NOT: #0 = {{.*}}"function-instrument"="xray-always"
// CHECK: #1 = {{.*}}"function-instrument"="xray-never"