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gcc/ChangeLog 

Backport from mainline
	2012-10-23  Terry Guo  <terry.guo@arm.com>

	PR target/55019
	* config/arm/arm.c (thumb1_expand_prologue): Don't push high regs with
	live argument regs.

	gcc/testsuite/ChangeLog
	Backport from mainline
	2012-10-23  Terry Guo  <terry.guo@arm.com>

	PR target/55019
	* gcc.dg/pr55019.c: New.

From-SVN: r192831
This commit is contained in:
Terry Guo 2012-10-26 02:12:06 +00:00 committed by Xuepeng Guo
parent 00b763f2e5
commit 03e4d0ebe3
4 changed files with 65 additions and 1 deletions
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9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
2012-10-26 Terry Guo <terry.guo@arm.com>
Backport from mainline
2012-10-23 Terry Guo <terry.guo@arm.com>
PR target/55019
* config/arm/arm.c (thumb1_expand_prologue): Don't push high regs with
live argument regs.
2012-10-26 Ralf Corsépius <ralf.corsepius@rtems.org>
* config/avr/rtems.h (TARGET_OS_CPP_BUILTINS): Remove

8
gcc/config/arm/arm.c
View File

@ -22293,12 +22293,18 @@ thumb1_expand_prologue (void)
{
unsigned pushable_regs;
unsigned next_hi_reg;
unsigned arg_regs_num = TARGET_AAPCS_BASED ? crtl->args.info.aapcs_ncrn
: crtl->args.info.nregs;
unsigned arg_regs_mask = (1 << arg_regs_num) - 1;
for (next_hi_reg = 12; next_hi_reg > LAST_LO_REGNUM; next_hi_reg--)
if (live_regs_mask & (1 << next_hi_reg))
break;
pushable_regs = l_mask & 0xff;
/* Here we need to mask out registers used for passing arguments
even if they can be pushed. This is to avoid using them to stash the high
registers. Such kind of stash may clobber the use of arguments. */
pushable_regs = l_mask & (~arg_regs_mask) & 0xff;
if (pushable_regs == 0)
pushable_regs = 1 << thumb_find_work_register (live_regs_mask);

8
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,11 @@
2012-10-26 Terry Guo <terry.guo@arm.com>
Backport from mainline
2012-10-23 Terry Guo <terry.guo@arm.com>
PR target/55019
* gcc.dg/pr55019.c: New.
2012-10-25 Richard Biener <rguenther@suse.de>
PR tree-optimization/54902

41
gcc/testsuite/gcc.dg/pr55019.c Normal file
View File

@ -0,0 +1,41 @@
/* { dg-do run } */
/* { dg-options "-O1 -funroll-loops" } */
/* { dg-add-options ieee } */
extern void exit (int);
extern void abort (void);
void
compare (double a, double b)
{
do
{
double s1 = __builtin_copysign ((double) 1.0, a);
double s2 = __builtin_copysign ((double) 1.0, b);
if (s1 != s2)
abort ();
if ((__builtin_isnan (a) != 0) != (__builtin_isnan (b) != 0))
abort ();
if ((a != b) != (__builtin_isnan (a) != 0))
abort ();
} while (0);
}
int
main ()
{
double a = 0.0;
double b = 0.0;
_Complex double cr = __builtin_complex (a, b);
static _Complex double cs = __builtin_complex (0.0, 0.0);
compare (__real__ cr, 0.0);
compare (__imag__ cr, 0.0);
compare (__real__ cs, 0.0);
compare (__imag__ cs, 0.0);
exit (0);
}