Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/test/tools/lto/hide-linkonce-odr.ll

@@ -0,0 +1,38 @@
+; RUN: llvm-as %s -o %t.o
+; RUN: %ld64 -lto_library %llvmshlibdir/libLTO.dylib -dylib -arch x86_64 -macosx_version_min 10.10.0 -lSystem -o %t.dylib %t.o -save-temps  -undefined dynamic_lookup -exported_symbol _c -exported_symbol _b  -exported_symbol _GlobLinkonce
+
+; RUN: llvm-dis %t.dylib.lto.opt.bc -o - | FileCheck --check-prefix=IR %s
+; check that @a is no longer a linkonce_odr definition
+; IR-NOT: define linkonce_odr void @a()
+; check that @b is appended in llvm.used
+; IR: @llvm.compiler.used = appending global [2 x i8*] [i8* bitcast ([1 x i8*]* @GlobLinkonce to i8*), i8* bitcast (void ()* @b to i8*)], section "llvm.metadata"
+
+; RUN: llvm-nm %t.dylib | FileCheck --check-prefix=NM %s
+; check that the linker can hide @a but not @b, nor @GlobLinkonce
+; NM:  S _GlobLinkonce
+; NM:  t _a
+; NM:  T _b
+; NM:  T _c
+
+
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.10.0"
+
+declare void @external()
+
+@GlobLinkonce = linkonce_odr unnamed_addr constant [1 x i8*] [i8* null], align 8
+
+define linkonce_odr void @a() noinline {
+  %use_of_GlobLinkonce = load [1 x i8*], [1 x i8*] *@GlobLinkonce
+  call void @external()
+  ret void
+}
+
+define linkonce_odr void @b() {
+  ret void
+}
+
+define void()* @c() {
+  call void @a()
+  ret void()* @b
+}

external/llvm/test/tools/lto/lit.local.cfg

@@ -0,0 +1,6 @@
+if not ('ld64_plugin' in config.available_features and 'X86' in config.root.targets):
+    config.unsupported = True
+
+# These tests invoke ld64 from the system, which is not leak-free
+if "Address" in config.llvm_use_sanitizer:
+    config.environment['ASAN_OPTIONS'] = 'detect_leaks=0'

external/llvm/test/tools/lto/no-bitcode.s

@@ -0,0 +1,4 @@
+; libLTO.dylib shouldn't assert on invalid inputs.
+; RUN: llvm-mc -triple=arm64-apple-ios7.0.0 -filetype=obj -o %t.o
+; RUN: llvm-ar r %t.a %t.o
+; RUN: %ld64 -lto_library %llvmshlibdir/libLTO.dylib -arch x86_64 -dylib -mllvm -O0 -o %t.dylib %t.a

external/llvm/test/tools/lto/opt-level.ll

@@ -0,0 +1,20 @@
+; RUN: llvm-as %s -o %t.o
+; RUN: %ld64 -lto_library %llvmshlibdir/libLTO.dylib -arch x86_64 -dylib -mllvm -O0 -o %t.dylib %t.o
+; RUN: llvm-nm -no-llvm-bc %t.dylib | FileCheck --check-prefix=CHECK-O0 %s
+; RUN: %ld64 -lto_library %llvmshlibdir/libLTO.dylib -arch x86_64 -dylib -mllvm -O2 -o %t.dylib %t.o
+; RUN: llvm-nm -no-llvm-bc %t.dylib | FileCheck --check-prefix=CHECK-O2 %s
+
+target triple = "x86_64-apple-macosx10.8.0"
+
+; CHECK-O0: t _f1
+; CHECK-O2-NOT: _f1
+define internal void @f1() {
+  ret void
+}
+
+; CHECK-O0: T _f2
+; CHECK-O2: T _f2
+define void @f2() {
+  call void @f1()
+  ret void
+}

external/llvm/test/tools/lto/print-stats.ll

@@ -0,0 +1,9 @@
+; RUN: llvm-as %s -o %t.o
+; RUN: %ld64 -lto_library %llvmshlibdir/libLTO.dylib -arch x86_64 -dylib -mllvm -stats -o %t.dylib %t.o 2>&1 | FileCheck --check-prefix=STATS %s
+; RUN: %ld64 -lto_library %llvmshlibdir/libLTO.dylib -arch x86_64 -dylib -o %t.dylib %t.o 2>&1 | FileCheck --check-prefix=NO_STATS %s
+; REQUIRES: asserts
+
+target triple = "x86_64-apple-macosx10.8.0"
+
+; STATS: Statistics Collected
+; NO_STATS-NOT: Statistics Collected