cc0d7eeb6d
The naming scheme we're using for counters in profile data shares a prefix with some fixed names we use for the runtime, notably __llvm_profile_data_begin and _end. Embarrassingly, this means a function called begin() can't be instrumented. This modifies the runtime names so as not to collide with the instrumentation. llvm-svn: 217166
32 lines
763 B
C
32 lines
763 B
C
// RUN: %clang_profgen -o %t -O3 %s
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// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t
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// RUN: llvm-profdata merge -o %t.profdata %t.profraw
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// RUN: %clang_profuse=%t.profdata -o - -S -emit-llvm %s | FileCheck %s
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int begin(int i) {
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// CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof !1
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if (i)
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return 0;
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return 1;
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}
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int end(int i) {
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// CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof !2
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if (i)
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return 0;
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return 1;
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}
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int main(int argc, const char *argv[]) {
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begin(0);
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end(1);
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// CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof !2
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if (argc)
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return 0;
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return 1;
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}
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// CHECK: !1 = metadata !{metadata !"branch_weights", i32 1, i32 2}
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// CHECK: !2 = metadata !{metadata !"branch_weights", i32 2, i32 1}
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