[PGO] Enable clang to pass compiler-rt profile support library to linker on Windows
Summary: This change enables clang to automatically link binaries built with the -fprofile-instr-generate against the clang_rt.profile-i386.lib library.
Reviewers: davidxl, dnovillo
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D15833
llvm-svn: 256855
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index a8f4afa..7af1899 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -9473,6 +9473,8 @@
A.renderAsInput(Args, CmdArgs);
}
+ TC.addProfileRTLibs(Args, CmdArgs);
+
// We need to special case some linker paths. In the case of lld, we need to
// translate 'lld' into 'lld-link', and in the case of the regular msvc
// linker, we need to use a special search algorithm.
diff --git a/clang/test/Driver/instrprof-ld.c b/clang/test/Driver/instrprof-ld.c
index b3ba12e..05f65d6 100644
--- a/clang/test/Driver/instrprof-ld.c
+++ b/clang/test/Driver/instrprof-ld.c
@@ -105,3 +105,19 @@
//
// CHECK-WATCHOS-ARMV7: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
// CHECK-WATCHOS-ARMV7: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}darwin{{/|\\\\}}libclang_rt.profile_watchos.a"
+//
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN: -target i386-pc-win32 -fprofile-instr-generate \
+// RUN: -resource-dir=%S/Inputs/resource_dir \
+// RUN: | FileCheck --check-prefix=CHECK-WINDOWS-I386 %s
+//
+// CHECK-WINDOWS-I386: "{{.*}}link{{(.exe)?}}"
+// CHECK-WINDOWS-I386: "{{.*}}clang_rt.profile-i386.lib"
+//
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN: -target x86_64-pc-win32 -fprofile-instr-generate \
+// RUN: -resource-dir=%S/Inputs/resource_dir \
+// RUN: | FileCheck --check-prefix=CHECK-WINDOWS-X86-64 %s
+//
+// CHECK-WINDOWS-X86-64: "{{.*}}link{{(.exe)?}}"
+// CHECK-WINDOWS-X86-64: "{{.*}}clang_rt.profile-x86_64.lib"