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backport: fpu-387.h (has_sse): Remove cw_sse, unused. 

Backport from mainline:
	2010-08-26  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* config/fpu-387.h (has_sse): Remove cw_sse, unused.
	Use fixed-length asm.

From-SVN: r164364
This commit is contained in:
Rainer Orth 2010-09-17 10:23:03 +00:00 committed by Rainer Orth
parent 641f3dab26
commit 99614d765a
2 changed files with 11 additions and 2 deletions
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8
libgfortran/ChangeLog
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@ -1,3 +1,11 @@
2010-09-17 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
Backport from mainline:
2010-08-26 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* config/fpu-387.h (has_sse): Remove cw_sse, unused.
Use fixed-length asm.
2010-07-15 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
Backport from mainline:

5
libgfortran/config/fpu-387.h
View File

@ -64,7 +64,6 @@ has_sse (void)
if (edx & bit_SSE)
{
struct sigaction act, oact;
unsigned int cw_sse;
act.sa_handler = sigill_hdlr;
sigemptyset (&act.sa_mask);
@ -72,7 +71,9 @@ has_sse (void)
act.sa_flags = SA_SIGINFO;
sigaction (SIGILL, &act, &oact);
asm volatile ("stmxcsr %0" : "=m" (cw_sse));
/* We need a single SSE instruction here so the handler can safely skip
over it. */
__asm__ volatile ("movss %xmm2,%xmm1");
sigaction (SIGILL, &oact, NULL);