mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-04-16 14:21:14 +08:00
Code Issues Packages Projects Releases Wiki Activity

arm.c (arm_output_epilogue): Reverse the order of loading iWMMXt registers with a frame pointer.

Browse Source 
* config/arm/arm.c (arm_output_epilogue): Reverse the order of
	loading iWMMXt registers with a frame pointer.  Use post-increment
	without a frame pointer.
	(arm_expand_prologue): Reverse the order of saving iWMMXt registers.
testsuite/
	* gcc.c-torture/execute/simd-5.c: New test.

From-SVN: r81092
This commit is contained in:
Daniel Jacobowitz 2004-04-23 13:51:21 +00:00 committed by Daniel Jacobowitz
parent 4424e0da57
commit 01d4c813e8
4 changed files with 73 additions and 3 deletions
gcc
ChangeLog
config/arm
arm.c
testsuite
ChangeLog
gcc.c-torture/execute
simd-5.c

7
gcc/ChangeLog

@ -1,3 +1,10 @@
2004-04-23 Daniel Jacobowitz <drow@mvista.com>
* config/arm/arm.c (arm_output_epilogue): Reverse the order of
loading iWMMXt registers with a frame pointer. Use post-increment
without a frame pointer.
(arm_expand_prologue): Reverse the order of saving iWMMXt registers.
2004-04-23 Paolo Bonzini <bonzini@gnu.org>
* doc/invoke.texi (Optimize Options): Refer to "unit-at-a-time

6
gcc/config/arm/arm.c

@ -9492,7 +9492,7 @@ arm_output_epilogue (rtx sibling)
the live_regs_mask. */
lrm_count += (lrm_count % 2 ? 2 : 1);
for (reg = FIRST_IWMMXT_REGNUM; reg <= LAST_IWMMXT_REGNUM; reg++)
for (reg = LAST_IWMMXT_REGNUM; reg >= FIRST_IWMMXT_REGNUM; reg--)
if (regs_ever_live[reg] && !call_used_regs[reg])
{
asm_fprintf (f, "\twldrd\t%r, [%r, #-%d]\n",
@ -9613,7 +9613,7 @@ arm_output_epilogue (rtx sibling)
if (TARGET_IWMMXT)
for (reg = FIRST_IWMMXT_REGNUM; reg <= LAST_IWMMXT_REGNUM; reg++)
if (regs_ever_live[reg] && !call_used_regs[reg])
asm_fprintf (f, "\twldrd\t%r, [%r, #+8]!\n", reg, SP_REGNUM);
asm_fprintf (f, "\twldrd\t%r, [%r], #8\n", reg, SP_REGNUM);
/* If we can, restore the LR into the PC. */
if (ARM_FUNC_TYPE (func_type) == ARM_FT_NORMAL
@ -10339,7 +10339,7 @@ arm_expand_prologue (void)
}
if (TARGET_IWMMXT)
for (reg = FIRST_IWMMXT_REGNUM; reg <= LAST_IWMMXT_REGNUM; reg++)
for (reg = LAST_IWMMXT_REGNUM; reg >= FIRST_IWMMXT_REGNUM; reg--)
if (regs_ever_live[reg] && ! call_used_regs [reg])
{
insn = gen_rtx_PRE_DEC (V2SImode, stack_pointer_rtx);

4
gcc/testsuite/ChangeLog

@ -1,3 +1,7 @@
2004-04-23 Daniel Jacobowitz <drow@mvista.com>
* gcc.c-torture/execute/simd-5.c: New test.
2004-04-23 Giovanni Bajo <giovannibajo@gcc.gnu.org>
PR c++/15064

59
gcc/testsuite/gcc.c-torture/execute/simd-5.c Normal file

@ -0,0 +1,59 @@
/* Test saving and restoring of SIMD registers. */
typedef short Q __attribute__((vector_size(8)));
Q q1 = {1, 2}, q2 = {3, 4}, q3 = {5, 6}, q4 = {7, 8};
Q w1, w2, w3, w4;
Q z1, z2, z3, z4;
volatile int dummy;
void __attribute__((__noinline__))
func0 (void)
{
dummy = 1;
}
void __attribute__((__noinline__))
func1 (void)
{
Q a, b;
a = q1 * q2;
b = q3 * q4;
w1 = a;
w2 = b;
func0 ();
w3 = a;
w4 = b;
}
void __attribute__((__noinline__))
func2 (void)
{
Q a, b;
a = q1 + q2;
b = q3 - q4;
z1 = a;
z2 = b;
func1 ();
z3 = a;
z4 = b;
}
int
main (void)
{
func2 ();
if (memcmp (&w1, &w3, sizeof (Q)) != 0)
abort ();
if (memcmp (&w2, &w4, sizeof (Q)) != 0)
abort ();
if (memcmp (&z1, &z3, sizeof (Q)) != 0)
abort ();
if (memcmp (&z2, &z4, sizeof (Q)) != 0)
abort ();
return 0;
}