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-rw-r--r--browser/app/Makefile.in8
-rw-r--r--browser/app/moz.build4
-rw-r--r--browser/app/nsBrowserApp.cpp45
-rwxr-xr-xbrowser/confvars.sh7
4 files changed, 0 insertions, 64 deletions
diff --git a/browser/app/Makefile.in b/browser/app/Makefile.in
index ca87f0995..d807b4337 100644
--- a/browser/app/Makefile.in
+++ b/browser/app/Makefile.in
@@ -23,14 +23,6 @@ NSDISTMODE = copy
include $(topsrcdir)/config/config.mk
-# If we are trying to show an error dialog about the lack of SSE2 support,
-# make sure that code itself doesn't use SSE2.
-ifdef MOZ_LINUX_SSE2_STARTUP_ERROR
-CXXFLAGS := $(filter-out -march=% -msse2 -mfpmath=sse,$(CXXFLAGS))
-CXX := $(filter-out -march=% -msse2 -mfpmath=sse,$(CXX))
-CXXFLAGS += -msse -mno-sse2 -mfpmath=387
-endif
-
ifeq ($(OS_ARCH),WINNT)
# Rebuild firefox.exe if the manifest changes - it's included by splash.rc.
# (this dependency should really be just for firefox.exe, not other targets)
diff --git a/browser/app/moz.build b/browser/app/moz.build
index 9650761ee..1004e280c 100644
--- a/browser/app/moz.build
+++ b/browser/app/moz.build
@@ -70,10 +70,6 @@ if CONFIG['HAVE_CLOCK_MONOTONIC']:
if CONFIG['MOZ_GPSD']:
DEFINES['MOZ_GPSD'] = True
-
-if CONFIG['MOZ_LINUX_SSE2_STARTUP_ERROR']:
- DEFINES['MOZ_LINUX_SSE2_STARTUP_ERROR'] = True
-
for icon in ('firefox', 'document', 'newwindow', 'newtab', 'pbmode'):
DEFINES[icon.upper() + '_ICO'] = '"%s/dist/branding/%s.ico"' % (
TOPOBJDIR, icon)
diff --git a/browser/app/nsBrowserApp.cpp b/browser/app/nsBrowserApp.cpp
index fc5ea8785..66ea8aed5 100644
--- a/browser/app/nsBrowserApp.cpp
+++ b/browser/app/nsBrowserApp.cpp
@@ -35,51 +35,6 @@
#include "mozilla/Telemetry.h"
#include "mozilla/WindowsDllBlocklist.h"
-#ifdef MOZ_LINUX_SSE2_STARTUP_ERROR
-#include <cpuid.h>
-#include "mozilla/Unused.h"
-
-static bool
-IsSSE2Available()
-{
- // The rest of the app has been compiled to assume that SSE2 is present
- // unconditionally, so we can't use the normal copy of SSE.cpp here.
- // Since SSE.cpp caches the results and we need them only transiently,
- // instead of #including SSE.cpp here, let's just inline the specific check
- // that's needed.
- unsigned int level = 1u;
- unsigned int eax, ebx, ecx, edx;
- unsigned int bits = (1u<<26);
- unsigned int max = __get_cpuid_max(0, nullptr);
- if (level > max) {
- return false;
- }
- __cpuid_count(level, 0, eax, ebx, ecx, edx);
- return (edx & bits) == bits;
-}
-
-static const char sSSE2Message[] =
- "This browser version requires a processor with the SSE2 instruction "
- "set extension.\n";
-
-__attribute__((constructor))
-static void
-SSE2Check()
-{
- if (IsSSE2Available()) {
- return;
- }
- // Using write() in order to avoid jemalloc-based buffering. Ignoring return
- // values, since there isn't much we could do on failure and there is no
- // point in trying to recover from errors.
- MOZ_UNUSED(write(STDERR_FILENO,
- sSSE2Message,
- MOZ_ARRAY_LENGTH(sSSE2Message) - 1));
- // _exit() instead of exit() to avoid running the usual "at exit" code.
- _exit(255);
-}
-#endif
-
#if !defined(MOZ_WIDGET_COCOA) && !defined(MOZ_WIDGET_ANDROID)
#define MOZ_BROWSER_CAN_BE_CONTENTPROC
#include "../../ipc/contentproc/plugin-container.cpp"
diff --git a/browser/confvars.sh b/browser/confvars.sh
index 3135f6b63..0343034a4 100755
--- a/browser/confvars.sh
+++ b/browser/confvars.sh
@@ -18,13 +18,6 @@ if test "$OS_ARCH" = "WINNT"; then
MOZ_MAINTENANCE_SERVICE=
fi
-# Display an error on non-SSE2 32-bit Linux systems
-if ! test "$HAVE_64BIT_BUILD"; then
- if test "$OS_ARCH" = "Linux"; then
- MOZ_LINUX_SSE2_STARTUP_ERROR=1
- fi
-fi
-
# For Basilisk we want to use 52.9.YYYY.MM.DD as MOZ_APP_VERSION in release
# builds so add-on developers have something to target while maintaining
# Firefox compatiblity.