1 // Tests for -fprofile-generate and -fprofile-use flag compatibility. These two 2 // flags behave similarly to their GCC counterparts: 3 // 4 // -fprofile-generate Generates the profile file ./default.profraw 5 // -fprofile-generate=<dir> Generates the profile file <dir>/default.profraw 6 // -fprofile-use Uses the profile file ./default.profdata 7 // -fprofile-use=<dir> Uses the profile file <dir>/default.profdata 8 // -fprofile-use=<dir>/file Uses the profile file <dir>/file 9 10 // Check that -fprofile-generate uses the runtime default profile file. 11 // RUN: %clang %s -c -S -o - -emit-llvm -fprofile-generate | FileCheck -check-prefix=PROFILE-GEN %s 12 // PROFILE-GEN-NOT: call void @__llvm_profile_override_default_filename 13 // PROFILE-GEN-NOT: declare void @__llvm_profile_override_default_filename(i8*) 14 15 // Check that -fprofile-generate=/path/to generates /path/to/default.profraw 16 // RUN: %clang %s -c -S -o - -emit-llvm -fprofile-generate=/path/to | FileCheck -check-prefix=PROFILE-GEN-EQ %s 17 // PROFILE-GEN-EQ: private constant [25 x i8] c"/path/to{{/|\\5C}}default.profraw\00" 18 // PROFILE-GEN-EQ: call void @__llvm_profile_override_default_filename(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @0, i32 0, i32 0)) 19 // PROFILE-GEN-EQ: declare void @__llvm_profile_override_default_filename(i8*) 20 21 // Check that -fprofile-use=some/path reads some/path/default.profdata 22 // RUN: rm -rf %t.dir 23 // RUN: mkdir -p %t.dir/some/path 24 // RUN: llvm-profdata merge %S/Inputs/gcc-flag-compatibility.proftext -o %t.dir/some/path/default.profdata 25 // RUN: %clang %s -o - -mllvm -disable-llvm-optzns -emit-llvm -S -fprofile-use=%t.dir/some/path | FileCheck -check-prefix=PROFILE-USE-2 %s 26 // PROFILE-USE-2: = !{!"branch_weights", i32 101, i32 2} 27 28 // Check that -fprofile-use=some/path/file.prof reads some/path/file.prof 29 // RUN: rm -rf %t.dir 30 // RUN: mkdir -p %t.dir/some/path 31 // RUN: llvm-profdata merge %S/Inputs/gcc-flag-compatibility.proftext -o %t.dir/some/path/file.prof 32 // RUN: %clang %s -o - -mllvm -disable-llvm-optzns -emit-llvm -S -fprofile-use=%t.dir/some/path/file.prof | FileCheck -check-prefix=PROFILE-USE-3 %s 33 // PROFILE-USE-3: = !{!"branch_weights", i32 101, i32 2} 34 35 int X = 0; 36 37 int main() { 38 int i; 39 for (i = 0; i < 100; i++) 40 X += i; 41 return 0; 42 } 43
