| 1 | /* Checks that BOLT correctly processes a user-provided function list file, |
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| 2 | * reorder functions according to this list, update hot_start and hot_end |
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| 3 | * symbols and insert a function to perform hot text mapping during program |
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| 4 | * startup. |
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| 5 | */ |
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| 6 | #include <stdio.h> |
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| 7 | |
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| 8 | int foo(int x) { |
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| 9 | return x + 1; |
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| 10 | } |
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| 11 | |
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| 12 | int fib(int x) { |
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| 13 | if (x < 2) |
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| 14 | return x; |
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| 15 | return fib(x: x - 1) + fib(x: x - 2); |
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| 16 | } |
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| 17 | |
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| 18 | int bar(int x) { |
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| 19 | return x - 1; |
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| 20 | } |
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| 21 | |
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| 22 | int main(int argc, char **argv) { |
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| 23 | printf(format: "fib(%d) = %d\n" , argc, fib(x: argc)); |
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| 24 | return 0; |
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| 25 | } |
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| 26 | |
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| 27 | /* |
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| 28 | REQUIRES: system-linux,bolt-runtime |
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| 29 | |
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| 30 | RUN: %clang %cflags -no-pie %s -o %t.exe -Wl,-q |
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| 31 | |
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| 32 | RUN: llvm-bolt %t.exe --relocs=1 --lite --reorder-functions=user \ |
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| 33 | RUN: --hugify --function-order=%p/Inputs/user_func_order.txt -o %t |
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| 34 | RUN: llvm-nm --numeric-sort --print-armap %t | \ |
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| 35 | RUN: FileCheck %s -check-prefix=CHECK-NM |
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| 36 | RUN: %t 1 2 3 | FileCheck %s -check-prefix=CHECK-OUTPUT |
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| 37 | |
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| 38 | CHECK-NM: W __hot_start |
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| 39 | CHECK-NM: T main |
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| 40 | CHECK-NM-NEXT: T fib |
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| 41 | CHECK-NM-NEXT: W __hot_end |
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| 42 | |
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| 43 | CHECK-OUTPUT: fib(4) = 3 |
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| 44 | */ |
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| 45 | |
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