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arm.c (arm_get_frame_offsets): Don't use r3 to align the stack when it's going to be saved.

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* config/arm/arm.c (arm_get_frame_offsets): Don't use r3 to
	align the stack when it's going to be saved.

	testsuite/
	* gcc.target/arm/interrupt-1.c: New test.
	* gcc.target/arm/interrupt-2.c: New test.

From-SVN: r162078
This commit is contained in:
Jie Zhang 2010-07-12 14:02:08 +00:00 • committed by Jie Zhang
parent f457c53d3c
commit fb2f8cf836
5 changed files with 61 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2010-07-12 Jie Zhang <jie@codesourcery.com>
* config/arm/arm.c (arm_get_frame_offsets): Don't use r3 to
align the stack when it's going to be saved.
2010-07-12 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
PR pch/14940

3
gcc/config/arm/arm.c
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@ -14691,7 +14691,8 @@ arm_get_frame_offsets (void)
generates better code on Thumb-2 by avoiding the need to
use 32-bit push/pop instructions. */
if (!crtl->tail_call_emit
&& arm_size_return_regs () <= 12)
&& arm_size_return_regs () <= 12
&& (offsets->saved_regs_mask & (1 << 3)) == 0)
{
reg = 3;
}

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2010-07-12 Jie Zhang <jie@codesourcery.com>
* gcc.target/arm/interrupt-1.c: New test.
* gcc.target/arm/interrupt-2.c: New test.
2010-07-12 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* gcc.dg/pr42427.c: Require c99_runtime.

23
gcc/testsuite/gcc.target/arm/interrupt-1.c Normal file
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@ -0,0 +1,23 @@
/* Verify that prologue and epilogue are correct for functions with
__attribute__ ((interrupt)). */
/* { dg-do compile } */
/* { dg-options "-O0" } */
/* This test is not valid when -mthumb. We just cheat. */
#ifndef __thumb__
extern void bar (int);
extern void foo (void) __attribute__ ((interrupt("IRQ")));
void foo ()
{
bar (0);
}
#else
void foo ()
{
asm ("stmfd\tsp!, {r0, r1, r2, r3, r4, fp, ip, lr}");
asm ("ldmfd\tsp!, {r0, r1, r2, r3, r4, fp, ip, pc}^");
}
#endif
/* { dg-final { scan-assembler "stmfd\tsp!, {r0, r1, r2, r3, r4, fp, ip, lr}" } } */
/* { dg-final { scan-assembler "ldmfd\tsp!, {r0, r1, r2, r3, r4, fp, ip, pc}\\^" } } */

26
gcc/testsuite/gcc.target/arm/interrupt-2.c Normal file
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@ -0,0 +1,26 @@
/* Verify that prologue and epilogue are correct for functions with
__attribute__ ((interrupt)). */
/* { dg-do compile } */
/* { dg-options "-O1" } */
/* This test is not valid when -mthum. We just cheat. */
#ifndef __thumb__
extern void bar (int);
extern void test (void) __attribute__((__interrupt__));
int foo;
void test()
{
funcptrs(foo);
foo = 0;
}
#else
void test ()
{
asm ("stmfd\tsp!, {r0, r1, r2, r3, r4, r5, ip, lr}");
asm ("ldmfd\tsp!, {r0, r1, r2, r3, r4, r5, ip, pc}^");
}
#endif
/* { dg-final { scan-assembler "stmfd\tsp!, {r0, r1, r2, r3, r4, r5, ip, lr}" } } */
/* { dg-final { scan-assembler "ldmfd\tsp!, {r0, r1, r2, r3, r4, r5, ip, pc}\\^" } } */