| 1 | #include <stdio.h> |
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| 2 | |
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| 3 | typedef int (*func_ptr)(int, int); |
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| 4 | |
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| 5 | int add(int a, int b) { return a + b; } |
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| 6 | |
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| 7 | int main() { |
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| 8 | func_ptr fun; |
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| 9 | fun = add; |
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| 10 | int sum = fun(10, 20); // indirect call to 'add' |
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| 11 | printf(format: "The sum is: %d\n" , sum); |
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| 12 | return 0; |
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| 13 | } |
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| 14 | /* |
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| 15 | REQUIRES: system-linux,bolt-runtime |
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| 16 | |
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| 17 | RUN: %clang %cflags %s -o %t.exe -Wl,-q -no-pie -fpie |
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| 18 | |
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| 19 | RUN: llvm-bolt %t.exe --instrument --instrumentation-file=%t.fdata \ |
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| 20 | RUN: -o %t.instrumented |
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| 21 | |
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| 22 | # Instrumented program needs to finish returning zero |
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| 23 | RUN: %t.instrumented | FileCheck %s -check-prefix=CHECK-OUTPUT |
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| 24 | |
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| 25 | # Test that the instrumented data makes sense |
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| 26 | RUN: llvm-bolt %t.exe -o %t.bolted --data %t.fdata \ |
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| 27 | RUN: --reorder-blocks=ext-tsp --reorder-functions=hfsort+ \ |
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| 28 | RUN: --print-only=main --print-finalized | FileCheck %s |
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| 29 | |
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| 30 | RUN: %t.bolted | FileCheck %s -check-prefix=CHECK-OUTPUT |
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| 31 | |
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| 32 | CHECK-OUTPUT: The sum is: 30 |
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| 33 | |
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| 34 | # Check that our indirect call has 1 hit recorded in the fdata file and that |
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| 35 | # this was processed correctly by BOLT |
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| 36 | CHECK: blr x8 # CallProfile: 1 (0 misses) : |
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| 37 | CHECK-NEXT: { add: 1 (0 misses) } |
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| 38 | */ |
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| 39 | |
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