Add GCC-compatible flags -fprofile-generate and -fprofile-use.

This patch adds support for specifying where the profile is emitted in a
way similar to GCC. These flags are used to specify directories instead
of filenames. When -fprofile-generate=DIR is used, the compiler will
generate code to write to <DIR>/default.profraw.

The patch also adds a couple of extensions: LLVM_PROFILE_FILE can still be
used to override the directory and file name to use and -fprofile-use
accepts both directories and filenames.

To simplify the set of flags used in the backend, all the flags get
canonicalized to -fprofile-instr-{generate,use} when passed to the
backend. The decision to use a default name for the profile is done
in the driver.

llvm-svn: 241825

1 files changed, 34 insertions, 5 deletions

diff --git a/clang/test/Driver/clang_f_opts.c b/clang/test/Driver/clang_f_opts.c
index 68890a70bc5..6a720331ed4 100644
--- a/clang/test/Driver/clang_f_opts.c
+++ b/clang/test/Driver/clang_f_opts.c
@@ -66,6 +66,40 @@
 // CHECK-PROFILE-ARCS: "-femit-coverage-data"
 // CHECK-NO-PROFILE-ARCS-NOT: "-femit-coverage-data"
 
+// RUN: %clang -### -S -fprofile-generate %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-GENERATE %s
+// RUN: %clang -### -S -fprofile-instr-generate %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-GENERATE %s
+// RUN: %clang -### -S -fprofile-generate=/some/dir %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-GENERATE-DIR %s
+// RUN: %clang -### -S -fprofile-instr-generate=/tmp/somefile.profraw %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-GENERATE-FILE %s
+// RUN: %clang -### -S -fprofile-generate -fprofile-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-generate -fprofile-use=dir %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-generate -fprofile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-generate -fprofile-instr-use=file %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-instr-generate -fprofile-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-instr-generate -fprofile-use=dir %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-instr-generate -fprofile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-instr-generate -fprofile-instr-use=file %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-instr-generate=file -fprofile-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-instr-generate=file -fprofile-use=dir %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-instr-generate=file -fprofile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-instr-generate=file -fprofile-instr-use=file %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-generate=dir -fprofile-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-generate=dir -fprofile-use=dir %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-generate=dir -fprofile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// RUN: %clang -### -S -fprofile-generate=dir -fprofile-instr-use=file %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MIX-GEN-USE %s
+// CHECK-PROFILE-GENERATE: "-fprofile-instr-generate"
+// CHECK-PROFILE-GENERATE-DIR: "-fprofile-instr-generate=/some/dir/default.profraw"
+// CHECK-PROFILE-GENERATE-FILE: "-fprofile-instr-generate=/tmp/somefile.profraw"
+// CHECK-NO-MIX-GEN-USE: '{{[a-z=-]*}}' not allowed with '{{[a-z=-]*}}'
+
+// RUN: %clang -### -S -fprofile-use %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-USE %s
+// RUN: %clang -### -S -fprofile-instr-use %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-USE %s
+// RUN: mkdir -p %t.d/some/dir
+// RUN: %clang -### -S -fprofile-use=%t.d/some/dir %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-USE-DIR %s
+// RUN: %clang -### -S -fprofile-instr-use=/tmp/somefile.prof %s 2>&1 | FileCheck -check-prefix=CHECK-PROFILE-USE-FILE %s
+// CHECK-PROFILE-USE: "-fprofile-instr-use=default.profdata"
+// CHECK-PROFILE-USE-DIR: "-fprofile-instr-use={{.*}}.d/some/dir/default.profdata"
+// CHECK-PROFILE-USE-FILE: "-fprofile-instr-use=/tmp/somefile.prof"
+
 // RUN: %clang -### -S -fvectorize %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s
 // RUN: %clang -### -S -fno-vectorize -fvectorize %s 2>&1 | FileCheck -check-prefix=CHECK-VECTORIZE %s
 // RUN: %clang -### -S -fno-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-NO-VECTORIZE %s
@@ -162,7 +196,6 @@
 // RUN:     -fprefetch-loop-arrays -fno-prefetch-loop-arrays                  \
 // RUN:     -fprofile-correction -fno-profile-correction                      \
 // RUN:     -fprofile-dir=bar                                                 \
-// RUN:     -fprofile-use -fprofile-use=zed -fno-profile-use                  \
 // RUN:     -fprofile-values -fno-profile-values                              \
 // RUN:     -frounding-math -fno-rounding-math                                \
 // RUN:     -fsee -fno-see                                                    \
@@ -242,8 +275,6 @@
 // RUN: -fno-keep-inline-functions                                            \
 // RUN: -freorder-blocks                                                      \
 // RUN: -fprofile-dir=/rand/dir                                               \
-// RUN: -fprofile-use                                                         \
-// RUN: -fprofile-use=/rand/dir                                               \
 // RUN: -falign-functions                                                     \
 // RUN: -falign-functions=1                                                   \
 // RUN: -ffloat-store                                                         \
@@ -312,8 +343,6 @@
 // CHECK-WARNING-DAG: optimization flag '-fno-keep-inline-functions' is not supported
 // CHECK-WARNING-DAG: optimization flag '-freorder-blocks' is not supported
 // CHECK-WARNING-DAG: optimization flag '-fprofile-dir=/rand/dir' is not supported
-// CHECK-WARNING-DAG: optimization flag '-fprofile-use' is not supported
-// CHECK-WARNING-DAG: optimization flag '-fprofile-use=/rand/dir' is not supported
 // CHECK-WARNING-DAG: optimization flag '-falign-functions' is not supported
 // CHECK-WARNING-DAG: optimization flag '-falign-functions=1' is not supported
 // CHECK-WARNING-DAG: optimization flag '-ffloat-store' is not supported