[PGO] clang cc1 option change to enable IR level instrumentation
This patch expands cc1 option -fprofile-instrument= with a new value: -fprofile-instrument=llvm
which enables IR level PGO instrumentation.
Reviewers: davidxl, silvas
Differential Revision: http://reviews.llvm.org/D17622
llvm-svn: 262239
diff --git a/clang/test/CodeGen/pgo-instrumentation.c b/clang/test/CodeGen/pgo-instrumentation.c
new file mode 100644
index 0000000..f78ab20
--- /dev/null
+++ b/clang/test/CodeGen/pgo-instrumentation.c
@@ -0,0 +1,9 @@
+// Test if PGO instrumentation and use pass are invoked.
+//
+// Ensure Pass PGOInstrumentationGenPass is invoked.
+// RUN: %clang_cc1 -O2 -fprofile-instrument=llvm %s -mllvm -debug-pass=Structure -emit-llvm -o - 2>&1 | FileCheck %s -check-prefix=CHECK-PGOGENPASS-INVOKED-INSTR-GEN
+// CHECK-PGOGENPASS-INVOKED-INSTR-GEN: PGOInstrumentationGenPass
+//
+// Ensure Pass PGOInstrumentationGenPass is not invoked.
+// RUN: %clang_cc1 -O2 -fprofile-instrument=clang %s -mllvm -debug-pass=Structure -emit-llvm -o - 2>&1 | FileCheck %s -check-prefix=CHECK-PGOGENPASS-INVOKED-INSTR-GEN-CLANG
+// CHECK-PGOGENPASS-INVOKED-INSTR-GEN-CLANG-NOT: PGOInstrumentationGenPass