From: Uros Bizjak <ubizjak@gmail.com>
To: "gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>
Subject: [PATCH, i386]: Do not compile crtfastmath.c and crtprec.c for soft-float targets
Date: Sun, 03 Nov 2013 10:14:00 -0000 [thread overview]
Message-ID: <CAFULd4Y7apz-tPa5NsLZgk1Rw04BKhHG-NSxFZExqwCRaXp=Eg@mail.gmail.com> (raw)
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Hello!
There is no point to access FP hardware for soft-float targets.
2013-11-03 Uros Bizjak <ubizjak@gmail.com>
* config/i386/crtfastmath.c: Compile only for !_SOFT_FLOAT.
* config/i386/crtprec.c: Ditto.
Tested on x86_64-pc-linux-gnu, committed to mainline SVN.
Uros.
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Index: config/i386/crtfastmath.c
===================================================================
--- config/i386/crtfastmath.c (revision 204324)
+++ config/i386/crtfastmath.c (working copy)
@@ -21,6 +21,7 @@
* <http://www.gnu.org/licenses/>.
*/
+#ifndef _SOFT_FLOAT
#define MXCSR_DAZ (1 << 6) /* Enable denormals are zero mode */
#define MXCSR_FTZ (1 << 15) /* Enable flush to zero mode */
@@ -134,3 +135,4 @@
__builtin_ia32_ldmxcsr (mxcsr);
#endif
}
+#endif
Index: config/i386/crtprec.c
===================================================================
--- config/i386/crtprec.c (revision 204324)
+++ config/i386/crtprec.c (working copy)
@@ -21,6 +21,7 @@
* <http://www.gnu.org/licenses/>.
*/
+#ifndef _SOFT_FLOAT
#if __PREC == 32
#define X87CW (0 << 8) /* Single precision (24 bits) */
#elif __PREC == 64
@@ -45,3 +46,4 @@
asm volatile ("fldcw\t%0" : : "m" (cwd));
}
+#endif
reply other threads:[~2013-11-03 10:14 UTC|newest]
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