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/**
* Test for asm-dump functionality.
*
* REQUIRES: system-linux,bolt-runtime
*
* Compile the source
* RUN: %clang -fPIC %s -o %t.exe -Wl,-q
*
* Profile collection: instrument the binary
* RUN: llvm-bolt %t.exe --instrument --instrumentation-file=%t.fdata -o %t.instr
*
* Profile collection: run instrumented binary (and capture output)
* RUN: %t.instr > %t.result
*
* Run BOLT with asm-dump
* RUN: llvm-bolt %t.exe -p %t.fdata --funcs=main --asm-dump=%t -o /dev/null \
* RUN: | FileCheck %s --check-prefix=CHECK-BOLT
*
* Check asm file contents
* RUN: cat %t/main.s | FileCheck %s --check-prefix=CHECK-FILE
*
* Now check if asm-dump file can be consumed by BOLT infra
* Strip dot from compiler-local symbols:
* RUN: sed -i 's/\.L/L/g' %t/main.s
*
* Recompile the asm file into objfile
* RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %t/main.s -o %t.o
*
* Reconstruct fdata
* RUN: link_fdata %t/main.s %t.o %t.fdata.reconst
*
* XXX: reenable once dumping data is supported
* Check if reoptimized file produces the same results
* dontrun: %t.exe.reopt > %t.result.reopt
* dontrun: cmp %t.result %t.result.reopt
*
* Delete our BB symbols so BOLT doesn't mark them as entry points
* RUN: llvm-strip --strip-unneeded %t.o
*
* Recompile the binary
* RUN: %clang -fPIC %t.o -o %t.exe.reopt -Wl,-q
*
* Finally consume reoptimized file with reconstructed fdata
* RUN: llvm-bolt %t.exe.reopt -p %t.fdata.reconst -o /dev/null \
* RUN: | FileCheck %s --check-prefix=CHECK-REOPT
*
* CHECK-BOLT: BOLT-INFO: Dumping function assembly to {{.*}}/main.s
*
* CHECK-FILE: .globl main
* CHECK-FILE-NEXT: .type main, %function
* CHECK-FILE-NEXT: main:
* CHECK-FILE-NEXT: # FDATA: 0 [unknown] 0 1 main 0 0 1
* CHECK-FILE-NEXT: .cfi_startproc
* CHECK-FILE-NEXT: .LBB{{.*}}:
* CHECK-FILE: .cfi_def_cfa_offset 16
* CHECK-FILE: leaq {{.*}}(%rip)
* CHECK-FILE: callq puts@PLT
* CHECK-FILE: .cfi_endproc
* CHECK-FILE-NEXT: .size main, .-main
* CHECK-FILE: .section .rodata
*
* CHECK-REOPT: BOLT-INFO: 1 out of {{.*}} functions in the binary {{.*}} have
* CHECK-REOPT: non-empty execution profile
*/
#include <stdio.h>
#include <string.h>
int main(int argc, char* argv[]) {
for (int I = 0; I < 10; I++) {
if (I != 9)
continue;
if (argc > 1 &&
strncmp(argv[1], "--help", strlen("--help")) == 0) {
puts("Help message\n");
} else {
puts("Hello, World!\n");
}
}
return 0;
}
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