forked from OSchip/llvm-project
44 lines
2.3 KiB
C
44 lines
2.3 KiB
C
// Tests for -fprofile-generate and -fprofile-use flag compatibility. These two
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// flags behave similarly to their GCC counterparts:
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//
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// -fprofile-generate Generates the profile file ./default.profraw
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// -fprofile-generate=<dir> Generates the profile file <dir>/default.profraw
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// -fprofile-use Uses the profile file ./default.profdata
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// -fprofile-use=<dir> Uses the profile file <dir>/default.profdata
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// -fprofile-use=<dir>/file Uses the profile file <dir>/file
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// Check that -fprofile-generate uses the runtime default profile file.
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// RUN: %clang %s -c -S -o - -emit-llvm -fprofile-generate | FileCheck -check-prefix=PROFILE-GEN %s
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// PROFILE-GEN: @__llvm_profile_runtime = external global i32
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// PROFILE-GEN-NOT: call void @__llvm_profile_override_default_filename
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// PROFILE-GEN-NOT: declare void @__llvm_profile_override_default_filename(i8*)
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// Check that -fprofile-generate=/path/to generates /path/to/default.profraw
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// RUN: %clang %s -c -S -o - -emit-llvm -fprofile-generate=/path/to | FileCheck -check-prefix=PROFILE-GEN-EQ %s
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// PROFILE-GEN-EQ: private constant [25 x i8] c"/path/to{{/|\\5C}}default.profraw\00"
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// PROFILE-GEN-EQ: call void @__llvm_profile_override_default_filename(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @0, i32 0, i32 0))
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// PROFILE-GEN-EQ: declare void @__llvm_profile_override_default_filename(i8*)
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// Check that -fprofile-use=some/path reads some/path/default.profdata
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// RUN: rm -rf %t.dir
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// RUN: mkdir -p %t.dir/some/path
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// RUN: llvm-profdata merge %S/Inputs/gcc-flag-compatibility.proftext -o %t.dir/some/path/default.profdata
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// RUN: %clang %s -o - -mllvm -disable-llvm-optzns -emit-llvm -S -fprofile-use=%t.dir/some/path | FileCheck -check-prefix=PROFILE-USE-2 %s
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// PROFILE-USE-2: = !{!"branch_weights", i32 101, i32 2}
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// Check that -fprofile-use=some/path/file.prof reads some/path/file.prof
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// RUN: rm -rf %t.dir
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// RUN: mkdir -p %t.dir/some/path
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// RUN: llvm-profdata merge %S/Inputs/gcc-flag-compatibility.proftext -o %t.dir/some/path/file.prof
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// 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
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// PROFILE-USE-3: = !{!"branch_weights", i32 101, i32 2}
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int X = 0;
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int main() {
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int i;
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for (i = 0; i < 100; i++)
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X += i;
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return 0;
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}
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