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[multiple changes] 

2015-01-13  Andrew Pinski   <apinski@cavium.com>

        * config/aarch64/aarch64.c (aarch64_operands_ok_for_ldpstp): Reject
        volatile mems.
        (aarch64_operands_adjust_ok_for_ldpstp): Likewise.


2015-01-13  Andrew Pinski  <apinski@cavium.com>

        * gcc.target/aarch64/volatileloadpair-1.c: New testcase.
        * gcc.target/aarch64/volatileloadpair-2.c: New testcase.

From-SVN: r219530
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Andrew Pinski 2015-01-13 13:55:23 +00:00 committed by Andrew Pinski
parent 08cb0abc7c
commit bf84ac44f9
5 changed files with 115 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2015-01-13 Andrew Pinski <apinski@cavium.com>
* config/aarch64/aarch64.c (aarch64_operands_ok_for_ldpstp): Reject
volatile mems.
(aarch64_operands_adjust_ok_for_ldpstp): Likewise.
2015-01-13 Jakub Jelinek <jakub@redhat.com>
PR middle-end/63974

9
gcc/config/aarch64/aarch64.c
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@ -10630,6 +10630,10 @@ aarch64_operands_ok_for_ldpstp (rtx *operands, bool load,
reg_2 = operands[3];
}
/* The mems cannot be volatile. */
if (MEM_VOLATILE_P (mem_1) || MEM_VOLATILE_P (mem_2))
return false;
/* Check if the addresses are in the form of [base+offset]. */
extract_base_offset_in_addr (mem_1, &base_1, &offset_1);
if (base_1 == NULL_RTX || offset_1 == NULL_RTX)
@ -10737,6 +10741,11 @@ aarch64_operands_adjust_ok_for_ldpstp (rtx *operands, bool load,
if (!MEM_P (mem_1) || aarch64_mem_pair_operand (mem_1, mode))
return false;
/* The mems cannot be volatile. */
if (MEM_VOLATILE_P (mem_1) || MEM_VOLATILE_P (mem_2)
|| MEM_VOLATILE_P (mem_3) ||MEM_VOLATILE_P (mem_4))
return false;
/* Check if the addresses are in the form of [base+offset]. */
extract_base_offset_in_addr (mem_1, &base_1, &offset_1);
if (base_1 == NULL_RTX || offset_1 == NULL_RTX)

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2015-01-13 Andrew Pinski <apinski@cavium.com>
* gcc.target/aarch64/volatileloadpair-1.c: New testcase.
* gcc.target/aarch64/volatileloadpair-2.c: New testcase.
2015-01-13 Richard Biener <rguenther@suse.de>
PR tree-optimization/64406

46
gcc/testsuite/gcc.target/aarch64/volatileloadpair-1.c Normal file
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@ -0,0 +1,46 @@
/* { dg-do compile } */
/* { dg-do options "-O2" } */
/* volatile references should not produce load pair. */
/* { dg-final { scan-assembler-not "ldp\t" } } */
int f0(volatile int *a)
{
int b = a[0];
int c = a[1];
return b + c;
}
int f1(volatile int *a)
{
int b = a[1];
int c = a[0];
return b + c;
}
int f2(volatile int *a)
{
int b = a[1];
int c = a[2];
return b + c;
}
int f3(volatile int *a)
{
int b = a[2];
int c = a[1];
return b + c;
}
int f4(volatile int *a)
{
int b = a[2];
int c = a[3];
return b + c;
}
int f5(volatile int *a)
{
int b = a[3];
int c = a[2];
return b + c;
}

49
gcc/testsuite/gcc.target/aarch64/volatileloadpair-2.c Normal file
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@ -0,0 +1,49 @@
/* { dg-do compile } */
/* { dg-do options "-O2" } */
/* volatile references should not produce load pair. */
/* { dg-final { scan-assembler-not "ldp\t" } } */
int f0(volatile int *a)
{
int b = a[0];
int c = a[1];
int d = a[2];
int e = a[3];
return b + c + d + e;
}
int f1(volatile int *a)
{
int b = a[1];
int c = a[0];
int d = a[2];
int e = a[3];
return b + c + d + e;
}
int f2(volatile int *a)
{
int b = a[1];
int c = a[0];
int d = a[3];
int e = a[2];
return b + c + d + e;
}
int f3(volatile int *a)
{
int b = a[1];
int c = a[3];
int d = a[0];
int e = a[2];
return b + c + d + e;
}
int f4(volatile int *a)
{
int b = a[1];
int c = a[3];
int d = a[2];
int e = a[0];
return b + c + d + e;
}