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From 7f0adaef68c5b0bb1c5eb9f5db5792b71b8b8beb Mon Sep 17 00:00:00 2001
From: Koen Kooi <koen@dominion.thruhere.net>
Date: Fri, 19 Mar 2010 10:44:09 +0100
Subject: [PATCH 6/6] Revert "ARM: SIMD: Try without any CFLAGS before forcing -mcpu="
This forces -marm that results in runtime SIGILL on thumb userspace
This reverts commit 18f0de452dc7e12e4cb544d761a626d5c6031663.
---
configure.ac | 20 +++++---------------
1 files changed, 5 insertions(+), 15 deletions(-)
diff --git a/configure.ac b/configure.ac
index fc3ee24..f84a4dc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -363,28 +363,18 @@ AM_CONDITIONAL(USE_VMX, test $have_vmx_intrinsics = yes)
dnl ===========================================================================
dnl Check for ARM SIMD instructions
-ARM_SIMD_CFLAGS=""
+ARM_SIMD_CFLAGS="-mcpu=arm1136j-s"
have_arm_simd=no
AC_MSG_CHECKING(whether to use ARM SIMD assembler)
-# check with default CFLAGS in case the toolchain turns on a sufficiently recent -mcpu=
+xserver_save_CFLAGS=$CFLAGS
+CFLAGS="$ARM_SIMD_CFLAGS $CFLAGS"
AC_COMPILE_IFELSE([
int main () {
asm("uqadd8 r1, r1, r2");
return 0;
-}], have_arm_simd=yes,
- # check again with an explicit -mcpu= in case the toolchain defaults to an
- # older one; note that uqadd8 isn't available in Thumb mode on arm1136j-s
- # so we force ARM mode
- ARM_SIMD_CFLAGS="-mcpu=arm1136j-s -marm"
- xserver_save_CFLAGS=$CFLAGS
- CFLAGS="$ARM_SIMD_CFLAGS $CFLAGS"
- AC_COMPILE_IFELSE([
- int main () {
- asm("uqadd8 r1, r1, r2");
- return 0;
- }], have_arm_simd=yes)
- CFLAGS=$xserver_save_CFLAGS)
+}], have_arm_simd=yes)
+CFLAGS=$xserver_save_CFLAGS
AC_ARG_ENABLE(arm-simd,
[AC_HELP_STRING([--disable-arm-simd],
--
1.6.6.1
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