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llvm-project/clang/test/CodeGen/mcount.c

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Add a testcase for the mcount profiling. llvm-svn: 125283
2011-02-11 00:52:35 +08:00
// RUN: %clang_cc1 -pg -triple i386-unknown-unknown -emit-llvm -o - %s | FileCheck %s
[Frontend] Fix mcount inlining bug Since some profiling tools, such as gprof, ftrace, and uftrace, use -pg option to generate a mcount function call at the entry of each function. Function invocation can be detected by this hook function. But mcount insertion is done before function inlining phase in clang, sometime a function that already has a mcount call can be inlined in the middle of another function. This patch adds an attribute "counting-function" to each function rather than emitting the mcount call directly in frontend so that this attribute can be processed in backend. Then the mcount calls can be properly inserted in backend after all the other optimizations are completed. Link: https://llvm.org/bugs/show_bug.cgi?id=28660 Reviewers: hans, rjmccall, hfinkel, rengolin, compnerd Subscribers: shenhan, cfe-commits Differential Revision: https://reviews.llvm.org/D22666 llvm-svn: 280355
2016-09-01 19:29:21 +08:00
// RUN: %clang_cc1 -pg -triple i386-unknown-unknown -emit-llvm -O2 -o - %s | FileCheck %s
[Clang] Handle interaction of -pg and no_instrument_function attribute. Summary: Disable generation of counting-function attribute if no_instrument_function attribute is present in function. Interaction between -pg and no_instrument_function is the desired behavior and matches gcc as well. This is required for fixing a crash in Linux kernel when function tracing is enabled. Fixes PR33515. Reviewers: hfinkel, rengolin, srhines, hans Reviewed By: hfinkel Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D34357 llvm-svn: 305728
2017-06-20 02:45:03 +08:00
// RUN: %clang_cc1 -pg -triple powerpc-unknown-gnu-linux -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple powerpc64-unknown-gnu-linux -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple powerpc64le-unknown-gnu-linux -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-PREFIXED,NO-MCOUNT1 %s
Always use __mcount on NetBSD. Some platforms don't provide _mcount. llvm-svn: 337277
2018-07-17 21:13:34 +08:00
// RUN: %clang_cc1 -pg -triple i386-netbsd -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-DOUBLE-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple x86_64-netbsd -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-DOUBLE-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple arm-netbsd-eabi -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-DOUBLE-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple aarch64-netbsd -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-DOUBLE-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple mips-netbsd -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-DOUBLE-PREFIXED,NO-MCOUNT1 %s
[mips] Create the correct profiling symbol on Linux MIPS llvm-svn: 307627
2017-07-11 14:19:01 +08:00
// RUN: %clang_cc1 -pg -triple mips-unknown-gnu-linux -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple mipsel-unknown-gnu-linux -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple mips64-unknown-gnu-linux -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple mips64el-unknown-gnu-linux -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-PREFIXED,NO-MCOUNT1 %s
[RISCV] Fix mcount name GCC's name for this symbol is _mcount, which the Linux kernel expects in a few different place: $ echo 'int main(void) { return 0; }' | riscv32-linux-gcc -c -pg -o tmp.o -x c - $ llvm-objdump -dr tmp.o | grep mcount 0000000c: R_RISCV_CALL _mcount $ echo 'int main(void) { return 0; }' | riscv64-linux-gcc -c -pg -o tmp.o -x c - $ llvm-objdump -dr tmp.o | grep mcount 000000000000000c: R_RISCV_CALL _mcount $ echo 'int main(void) { return 0; }' | clang -c -pg -o tmp.o --target=riscv32-linux-gnu -x c - $ llvm-objdump -dr tmp.o | grep mcount 0000000a: R_RISCV_CALL_PLT mcount $ echo 'int main(void) { return 0; }' | clang -c -pg -o tmp.o --target=riscv64-linux-gnu -x c - $ llvm-objdump -dr tmp.o | grep mcount 000000000000000a: R_RISCV_CALL_PLT mcount Set MCountName to "_mcount" in RISCVTargetInfo then prevent it from getting overridden in certain OSTargetInfo constructors. Reviewed By: MaskRay Differential Revision: https://reviews.llvm.org/D98881 Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2021-03-24 06:16:50 +08:00
// RUN: %clang_cc1 -pg -triple riscv32-elf -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple riscv64-elf -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple riscv32-linux -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple riscv64-linux -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple riscv64-freebsd -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple riscv64-freebsd -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple riscv64-openbsd -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-PREFIXED,NO-MCOUNT1 %s
Always use __mcount on NetBSD. Some platforms don't provide _mcount. llvm-svn: 337277
2018-07-17 21:13:34 +08:00
// RUN: %clang_cc1 -pg -triple powerpc-netbsd -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-DOUBLE-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple powerpc64-netbsd -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-DOUBLE-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple powerpc64le-netbsd -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-DOUBLE-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple sparc-netbsd -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-DOUBLE-PREFIXED,NO-MCOUNT1 %s
// RUN: %clang_cc1 -pg -triple sparc64-netbsd -emit-llvm -o - %s | FileCheck -check-prefixes=CHECK-DOUBLE-PREFIXED,NO-MCOUNT1 %s
[Frontend] Fix mcount inlining bug Since some profiling tools, such as gprof, ftrace, and uftrace, use -pg option to generate a mcount function call at the entry of each function. Function invocation can be detected by this hook function. But mcount insertion is done before function inlining phase in clang, sometime a function that already has a mcount call can be inlined in the middle of another function. This patch adds an attribute "counting-function" to each function rather than emitting the mcount call directly in frontend so that this attribute can be processed in backend. Then the mcount calls can be properly inserted in backend after all the other optimizations are completed. Link: https://llvm.org/bugs/show_bug.cgi?id=28660 Reviewers: hans, rjmccall, hfinkel, rengolin, compnerd Subscribers: shenhan, cfe-commits Differential Revision: https://reviews.llvm.org/D22666 llvm-svn: 280355
2016-09-01 19:29:21 +08:00
// RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s -check-prefix=NO-MCOUNT
int bar(void) {
return 0;
Add a testcase for the mcount profiling. llvm-svn: 125283
2011-02-11 00:52:35 +08:00
}
[Frontend] Fix mcount inlining bug Since some profiling tools, such as gprof, ftrace, and uftrace, use -pg option to generate a mcount function call at the entry of each function. Function invocation can be detected by this hook function. But mcount insertion is done before function inlining phase in clang, sometime a function that already has a mcount call can be inlined in the middle of another function. This patch adds an attribute "counting-function" to each function rather than emitting the mcount call directly in frontend so that this attribute can be processed in backend. Then the mcount calls can be properly inserted in backend after all the other optimizations are completed. Link: https://llvm.org/bugs/show_bug.cgi?id=28660 Reviewers: hans, rjmccall, hfinkel, rengolin, compnerd Subscribers: shenhan, cfe-commits Differential Revision: https://reviews.llvm.org/D22666 llvm-svn: 280355
2016-09-01 19:29:21 +08:00
int foo(void) {
return bar();
}
[Clang] Handle interaction of -pg and no_instrument_function attribute. Summary: Disable generation of counting-function attribute if no_instrument_function attribute is present in function. Interaction between -pg and no_instrument_function is the desired behavior and matches gcc as well. This is required for fixing a crash in Linux kernel when function tracing is enabled. Fixes PR33515. Reviewers: hfinkel, rengolin, srhines, hans Reviewed By: hfinkel Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D34357 llvm-svn: 305728
2017-06-20 02:45:03 +08:00
int __attribute__((no_instrument_function)) no_instrument(void) {
[Frontend] Fix mcount inlining bug Since some profiling tools, such as gprof, ftrace, and uftrace, use -pg option to generate a mcount function call at the entry of each function. Function invocation can be detected by this hook function. But mcount insertion is done before function inlining phase in clang, sometime a function that already has a mcount call can be inlined in the middle of another function. This patch adds an attribute "counting-function" to each function rather than emitting the mcount call directly in frontend so that this attribute can be processed in backend. Then the mcount calls can be properly inserted in backend after all the other optimizations are completed. Link: https://llvm.org/bugs/show_bug.cgi?id=28660 Reviewers: hans, rjmccall, hfinkel, rengolin, compnerd Subscribers: shenhan, cfe-commits Differential Revision: https://reviews.llvm.org/D22666 llvm-svn: 280355
2016-09-01 19:29:21 +08:00
return foo();
}
[Clang] Handle interaction of -pg and no_instrument_function attribute. Summary: Disable generation of counting-function attribute if no_instrument_function attribute is present in function. Interaction between -pg and no_instrument_function is the desired behavior and matches gcc as well. This is required for fixing a crash in Linux kernel when function tracing is enabled. Fixes PR33515. Reviewers: hfinkel, rengolin, srhines, hans Reviewed By: hfinkel Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D34357 llvm-svn: 305728
2017-06-20 02:45:03 +08:00
int main(void) {
return no_instrument();
}
Move EntryExitInstrumentation pass location This seems to be more of a Clang thing rather than a generic LLVM thing, so this moves it out of LLVM pipelines and as Clang extension hooks into LLVM pipelines. Move the post-inline EEInstrumentation out of the backend pipeline and into a late pass, similar to other sanitizer passes. It doesn't fit into the codegen pipeline. Also fix up EntryExitInstrumentation not running at -O0 under the new PM. PR49143 Reviewed By: hans Differential Revision: https://reviews.llvm.org/D97608
2021-02-27 12:06:49 +08:00
// CHECK: call void @mcount
// CHECK: call void @mcount
// CHECK: call void @mcount
// CHECK-NOT: call void @mcount
// CHECK-PREFIXED: call void @_mcount
// CHECK-PREFIXED: call void @_mcount
// CHECK-PREFIXED: call void @_mcount
// CHECK-PREFIXED-NOT: call void @_mcount
// CHECK-DOUBLE-PREFIXED: call void @__mcount
// CHECK-DOUBLE-PREFIXED: call void @__mcount
// CHECK-DOUBLE-PREFIXED: call void @__mcount
// CHECK-DOUBLE-PREFIXED-NOT: call void @__mcount
// NO-MCOUNT-NOT: call void @{{.*}}mcount
// NO-MCOUNT1-NOT: call void @{{.*}}mcount