On Fri, Mar 30, 2012 at 8:11 AM, Rainer Orth
<r...@cebitec.uni-bielefeld.de> wrote:
> Mike Stump <mikest...@comcast.net> writes:
>
>>> Here is the new patch.  OK for trunk if there are no regressions on
>>> Linux/ia32 and Linux/x86-64?
>>
>> Too bad you didn't test 32-bit darwin, causes:
>>
>>   http://gcc.gnu.org/PR52784
>>
>> Could you please revert or fix, thanks.
>
> Same problem on Solaris 10 and 11/x86.
>
>        Rainer
>

When i[34567]86-*-* targets are configured with --enable-targets=all,
TARGET_BI_ARCH is defined as 1, but TARGET_64BIT_DEFAULT
isn't defined.  It leads to

   if (!TARGET_64BIT)
     ix86_isa_flags &= ~(OPTION_MASK_ABI_64 | OPTION_MASK_ABI_X32);

Since TARGET_64BIT is false by default, -m64 and -mx32 don't work
correctly.  This patch changes TARGET_BI_ARCH to 3 for
i[34567]86-*-* targets configured with --enable-targets=all.  Tested on
Linux/ia32 with bootstrap and Linux/ia32 with --enable-targets=all
--disable-bootstrap.  Please try on other OSes.

Thanks.


-- 
H.J.
---
2012-03-30  H.J. Lu  <hongjiu...@intel.com>

        PR bootstrap/52784
        * config.gcc (tm_defines): Replace TARGET_BI_ARCH=1 with
        TARGET_BI_ARCH=3 for i[34567]86-*-* targets.

        * config/i386/i386.c (ix86_option_override_internal): Don't
        check OPTION_MASK_ABI_64 nor OPTION_MASK_ABI_X32 if
        TARGET_BI_ARCH isn't defined or TARGET_BI_ARCH == 3.
2012-03-30  H.J. Lu  <hongjiu...@intel.com>

	PR bootstrap/52784
	* config.gcc (tm_defines): Replace TARGET_BI_ARCH=1 with
	TARGET_BI_ARCH=3 for i[34567]86-*-* targets.

	* config/i386/i386.c (ix86_option_override_internal): Don't
	check OPTION_MASK_ABI_64 nor OPTION_MASK_ABI_X32 if
	TARGET_BI_ARCH isn't defined or TARGET_BI_ARCH == 3.

diff --git a/gcc/config.gcc b/gcc/config.gcc
index c30bb24..d1e0480 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1208,7 +1208,7 @@ i[34567]86-*-linux* | i[34567]86-*-kfreebsd*-gnu | i[34567]86-*-knetbsd*-gnu | i
 		default_gnu_indirect_function=yes
 		if test x$enable_targets = xall; then
 			tm_file="${tm_file} i386/x86-64.h i386/gnu-user64.h i386/linux64.h"
-			tm_defines="${tm_defines} TARGET_BI_ARCH=1"
+			tm_defines="${tm_defines} TARGET_BI_ARCH=3"
 			tmake_file="${tmake_file} i386/t-linux64"
 			x86_multilibs="${with_multilib_list}"
 			if test "$x86_multilibs" = "default"; then
@@ -1338,7 +1338,7 @@ i[34567]86-*-solaris2* | x86_64-*-solaris2.1[0-9]*)
 	case ${target} in
 	*-*-solaris2.1[0-9]*)
 		tm_file="${tm_file} i386/x86-64.h i386/sol2-bi.h sol2-bi.h"
-		tm_defines="${tm_defines} TARGET_BI_ARCH=1"
+		tm_defines="${tm_defines} TARGET_BI_ARCH=3"
 		tmake_file="$tmake_file i386/t-sol2-64"
 		need_64bit_isa=yes
 		case X"${with_cpu}" in
@@ -1406,7 +1406,7 @@ i[34567]86-*-mingw* | x86_64-*-mingw*)
 			user_headers_inc_next_pre="${user_headers_inc_next_pre} stddef.h stdarg.h"
 			tm_file="${tm_file} i386/mingw-w64.h"
 			if test x$enable_targets = xall; then
-				tm_defines="${tm_defines} TARGET_BI_ARCH=1"
+				tm_defines="${tm_defines} TARGET_BI_ARCH=3"
 				case X"${with_cpu}" in
 				Xgeneric|Xatom|Xcore2|Xcorei7|Xcorei7-avx|Xnocona|Xx86-64|Xbdver2|Xbdver1|Xbtver1|Xamdfam10|Xbarcelona|Xk8|Xopteron|Xathlon64|Xathlon-fx|Xathlon64-sse3|Xk8-sse3|Xopteron-sse3)
 					;;
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 42746e4..62ed2c0 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -3117,11 +3117,14 @@ ix86_option_override_internal (bool main_args_p)
   SUBSUBTARGET_OVERRIDE_OPTIONS;
 #endif
 
-  /* Turn off both OPTION_MASK_ABI_64 and OPTION_MASK_ABI_X32 if
-     TARGET_64BIT is false.  */
+#if defined TARGET_BI_ARCH && TARGET_BI_ARCH != 3
+  /* When TARGET_BI_ARCH isn't defined or TARGET_BI_ARCH == 3,
+     TARGET_64BIT is false by default and there is no need to check
+     OPTION_MASK_ABI_64 nor OPTION_MASK_ABI_X32.  Turn off both
+     OPTION_MASK_ABI_64 and OPTION_MASK_ABI_X32 if TARGET_64BIT is
+     false.  */
   if (!TARGET_64BIT)
     ix86_isa_flags &= ~(OPTION_MASK_ABI_64 | OPTION_MASK_ABI_X32);
-#ifdef TARGET_BI_ARCH
   else
     {
 #if TARGET_BI_ARCH == 1

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