0559dab546
Summary: Change cmake config in BOLT to only support Linux. In other platforms, we print a warning that we won't build BOLT. Change configs to determine whether we will build BOLT runtime libs. This only happens in x86 hosts. If true, we will build the runtime and enable bolt-runtime tests. New tests that depend on the bolt_rt lib needs to be marked REQUIRES:bolt-runtime. I updated the relevant tests. Fix cmake to do not crash when building llvm with a target that BOLT does not support. (cherry picked from FBD31935760)
45 lines
999 B
C
45 lines
999 B
C
/* Checks that BOLT correctly processes a user-provided function list file,
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* reorder functions according to this list, update hot_start and hot_end
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* symbols and insert a function to perform hot text mapping during program
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* startup.
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*/
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#include <stdio.h>
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int foo(int x) {
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return x + 1;
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}
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int fib(int x) {
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if (x < 2)
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return x;
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return fib(x - 1) + fib(x - 2);
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}
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int bar(int x) {
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return x - 1;
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}
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int main(int argc, char **argv) {
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printf("fib(%d) = %d\n", argc, fib(argc));
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return 0;
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}
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/*
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REQUIRES: system-linux,bolt-runtime
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RUN: %clang %cflags %s -o %t.exe -Wl,-q
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RUN: llvm-bolt %t.exe -relocs=1 -lite -reorder-functions=user \
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RUN: -hugify -function-order=%p/Inputs/user_func_order.txt -o %t
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RUN: llvm-nm --numeric-sort --print-armap %t | \
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RUN: FileCheck %s -check-prefix=CHECK-NM
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RUN: %t 1 2 3 | FileCheck %s -check-prefix=CHECK-OUTPUT
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CHECK-NM: W __hot_start
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CHECK-NM: T main
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CHECK-NM-NEXT: T fib
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CHECK-NM-NEXT: W __hot_end
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CHECK-OUTPUT: fib(4) = 3
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*/
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