| 1 | /** |
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| 2 | ** Test for asm-dump functionality. |
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| 3 | * |
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| 4 | * REQUIRES: x86_64-linux,bolt-runtime |
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| 5 | * |
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| 6 | * Compile the source |
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| 7 | * RUN: %clang -fPIC %s -o %t.exe -Wl,-q |
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| 8 | * |
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| 9 | * Profile collection: instrument the binary |
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| 10 | * RUN: llvm-bolt %t.exe --instrument --instrumentation-file=%t.fdata -o \ |
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| 11 | * RUN: %t.instr |
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| 12 | * |
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| 13 | * Profile collection: run instrumented binary (and capture output) |
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| 14 | * RUN: %t.instr > %t.result |
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| 15 | * |
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| 16 | * Run BOLT with asm-dump |
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| 17 | * RUN: llvm-bolt %t.exe -p %t.fdata --funcs=main --asm-dump=%t -o %t.null \ |
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| 18 | * RUN: | FileCheck %s --check-prefix=CHECK-BOLT |
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| 19 | * |
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| 20 | * Check asm file contents |
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| 21 | * RUN: cat %t/main.s | FileCheck %s --check-prefix=CHECK-FILE |
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| 22 | * |
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| 23 | * Now check if asm-dump file can be consumed by BOLT infra |
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| 24 | * Strip dot from compiler-local symbols: |
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| 25 | * RUN: sed -i 's/\.L/L/g' %t/main.s |
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| 26 | * |
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| 27 | * Recompile the asm file into objfile |
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| 28 | * RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %t/main.s -o %t.o |
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| 29 | * |
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| 30 | * Reconstruct fdata |
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| 31 | * RUN: link_fdata %t/main.s %t.o %t.fdata.reconst |
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| 32 | * |
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| 33 | * XXX: reenable once dumping data is supported |
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| 34 | * Check if reoptimized file produces the same results |
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| 35 | * dontrun: %t.exe.reopt > %t.result.reopt |
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| 36 | * dontrun: cmp %t.result %t.result.reopt |
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| 37 | * |
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| 38 | * Delete our BB symbols so BOLT doesn't mark them as entry points |
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| 39 | * RUN: llvm-strip --strip-unneeded %t.o |
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| 40 | * |
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| 41 | * Recompile the binary |
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| 42 | * RUN: %clang -fPIC %t.o -o %t.exe.reopt -Wl,-q |
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| 43 | * |
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| 44 | * Finally consume reoptimized file with reconstructed fdata |
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| 45 | * RUN: llvm-bolt %t.exe.reopt -p %t.fdata.reconst -o %t.null \ |
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| 46 | * RUN: | FileCheck %s --check-prefix=CHECK-REOPT |
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| 47 | * |
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| 48 | * CHECK-BOLT: BOLT-INFO: Dumping function assembly to {{.*}}/main.s |
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| 49 | * |
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| 50 | * CHECK-FILE: .globl main |
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| 51 | * CHECK-FILE-NEXT: .type main, %function |
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| 52 | * CHECK-FILE-NEXT: main: |
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| 53 | * CHECK-FILE-NEXT: # FDATA: 0 [unknown] 0 1 main 0 0 1 |
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| 54 | * CHECK-FILE-NEXT: .cfi_startproc |
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| 55 | * CHECK-FILE-NEXT: .LBB{{.*}}: |
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| 56 | * CHECK-FILE: .cfi_def_cfa_offset 16 |
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| 57 | * CHECK-FILE: leaq {{.*}}(%rip) |
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| 58 | * CHECK-FILE: callq puts@PLT |
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| 59 | * CHECK-FILE: .cfi_endproc |
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| 60 | * CHECK-FILE-NEXT: .size main, .-main |
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| 61 | * CHECK-FILE: .section .rodata |
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| 62 | * |
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| 63 | * CHECK-REOPT: BOLT-INFO: 1 out of {{.*}} functions in the binary {{.*}} have |
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| 64 | * CHECK-REOPT: non-empty execution profile |
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| 65 | */ |
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| 66 | #include <stdio.h> |
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| 67 | #include <string.h> |
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| 68 | |
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| 69 | int main(int argc, char* argv[]) { |
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| 70 | for (int I = 0; I < 10; I++) { |
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| 71 | if (I != 9) |
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| 72 | continue; |
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| 73 | if (argc > 1 && |
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| 74 | strncmp(s1: argv[1], s2: "--help" , n: strlen(s: "--help" )) == 0) { |
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| 75 | puts(s: "Help message\n" ); |
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| 76 | } else { |
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| 77 | puts(s: "Hello, World!\n" ); |
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| 78 | } |
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| 79 | } |
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| 80 | return 0; |
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| 81 | } |
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| 82 | |
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