Bug 759683 - Check for -mssse3 instead of inconditionally using it. r=glandium

config/autoconf.mk.in

@@ -660,6 +660,7 @@ WRAP_SYSTEM_INCLUDES = @WRAP_SYSTEM_INCLUDES@
 HAVE_ARM_SIMD = @HAVE_ARM_SIMD@
 HAVE_ARM_NEON = @HAVE_ARM_NEON@
 HAVE_GCC_ALIGN_ARG_POINTER = @HAVE_GCC_ALIGN_ARG_POINTER@
+HAVE_COMPILER_FLAG_MSSSE3 = @HAVE_COMPILER_FLAG_MSSSE3@
 
 MOZ_THEME_FASTSTRIPE = @MOZ_THEME_FASTSTRIPE@
 

configure.in

@@ -1713,6 +1713,17 @@ if test "$GNU_CC"; then
     _MOZ_RTTI_FLAGS_ON=-frtti
     _MOZ_RTTI_FLAGS_OFF=-fno-rtti
 
+    # Check for -mssse3 on $CC
+    AC_MSG_CHECKING([for -mssse3 option to $CC])
+    HAVE_COMPILER_FLAG_MSSSE3=
+    _SAVE_CFLAGS=$CFLAGS
+    CFLAGS="$CFLAGS -mssse3"
+    AC_TRY_COMPILE(,,AC_MSG_RESULT([yes])
+                     [HAVE_COMPILER_FLAG_MSSSE3=1],
+                     AC_MSG_RESULT([no]))
+    CFLAGS=$_SAVE_CFLAGS
+    AC_SUBST(HAVE_COMPILER_FLAG_MSSSE3)
+
     # Turn on GNU-specific warnings:
     # -Wall - turn on a lot of warnings
     # -pedantic - this is turned on below

gfx/skia/Makefile.in

@@ -360,12 +360,15 @@ endif
 ifneq (,$(INTEL_ARCHITECTURE))
 CPPSRCS += \
 	SkBitmapProcState_opts_SSE2.cpp \
-	SkBitmapProcState_opts_SSSE3.cpp \
 	SkBlitRect_opts_SSE2.cpp \
 	SkBlitRow_opts_SSE2.cpp \
 	SkUtils_opts_SSE2.cpp \
 	opts_check_SSE2.cpp \
 	$(NULL)
+ifdef HAVE_COMPILER_FLAG_MSSSE3
+DEFINES += -DSK_BUILD_SSSE3
+CPPSRCS += SkBitmapProcState_opts_SSSE3.cpp
+endif
 else
 ifeq ($(CPU_ARCH)_$(GNU_CC),arm_1)
 CPPSRCS += \

gfx/skia/patches/0012-Bug-759683-make-ssse3-conditional.patch

@@ -0,0 +1,22 @@
+diff --git a/gfx/skia/src/opts/opts_check_SSE2.cpp b/gfx/skia/src/opts/opts_check_SSE2.cpp
+--- a/gfx/skia/src/opts/opts_check_SSE2.cpp
++++ b/gfx/skia/src/opts/opts_check_SSE2.cpp
+@@ -91,17 +91,17 @@ static bool cachedHasSSE2() {
+ 
+ static bool cachedHasSSSE3() {
+     static bool gHasSSSE3 = hasSSSE3();
+     return gHasSSSE3;
+ }
+ 
+ void SkBitmapProcState::platformProcs() {
+     if (cachedHasSSSE3()) {
+-#if !defined(SK_BUILD_FOR_ANDROID)
++#if defined(SK_BUILD_SSSE3)
+         // Disable SSSE3 optimization for Android x86
+         if (fSampleProc32 == S32_opaque_D32_filter_DX) {
+             fSampleProc32 = S32_opaque_D32_filter_DX_SSSE3;
+         } else if (fSampleProc32 == S32_alpha_D32_filter_DX) {
+             fSampleProc32 = S32_alpha_D32_filter_DX_SSSE3;
+         }
+ 
+         if (fSampleProc32 == S32_opaque_D32_filter_DXDY) {

gfx/skia/patches/README

@@ -14,3 +14,4 @@ See the relevant bugs in bugzilla for information on these patches:
 0009-Bug-755869-FreeBSD-Hurd.patch
 0010-Bug-689069-ARM-Opts.patch
 0011-Bug-719575-Fix-clang-build.patch
+0012-Bug-759683-make-ssse3-conditional.patch

gfx/skia/src/opts/opts_check_SSE2.cpp

@@ -96,7 +96,7 @@ static bool cachedHasSSSE3() {
 
 void SkBitmapProcState::platformProcs() {
     if (cachedHasSSSE3()) {
-#if !defined(SK_BUILD_FOR_ANDROID)
+#if defined(SK_BUILD_SSSE3)
         // Disable SSSE3 optimization for Android x86
         if (fSampleProc32 == S32_opaque_D32_filter_DX) {
             fSampleProc32 = S32_opaque_D32_filter_DX_SSSE3;