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[AArch64] Only maintain frame record when required or desired 

From-SVN: r197215
This commit is contained in:
Ian Bolton 2013-03-28 20:33:15 +00:00 committed by Ian Bolton
parent 2b24855e1e
commit 777e69760d
13 changed files with 369 additions and 4 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2013-03-28 Ian Bolton <ian.bolton@arm.com>
* config/aarch64/aarch64.md (aarch64_can_eliminate): Keep frame
record only when desired or required.
2013-03-28 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.md (*vec_extract2vdi_1): Merge with

15
gcc/config/aarch64/aarch64.c
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@ -3879,14 +3879,21 @@ aarch64_can_eliminate (const int from, const int to)
}
else
{
/* If we decided that we didn't need a frame pointer but then used
LR in the function, then we do need a frame pointer after all, so
prevent this elimination to ensure a frame pointer is used. */
/* If we decided that we didn't need a leaf frame pointer but then used
LR in the function, then we'll want a frame pointer after all, so
prevent this elimination to ensure a frame pointer is used.
NOTE: the original value of flag_omit_frame_pointer gets trashed
IFF flag_omit_leaf_frame_pointer is true, so we check the value
of faked_omit_frame_pointer here (which is true when we always
wish to keep non-leaf frame pointers but only wish to keep leaf frame
pointers when LR is clobbered). */
if (from == FRAME_POINTER_REGNUM && to == STACK_POINTER_REGNUM
&& df_regs_ever_live_p (LR_REGNUM))
&& df_regs_ever_live_p (LR_REGNUM)
&& faked_omit_frame_pointer)
return false;
}
return true;
}

13
gcc/testsuite/ChangeLog
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@ -1,3 +1,16 @@
2013-03-28 Ian Bolton <ian.bolton@arm.com>
* gcc.target/aarch64/inc/asm-adder-clobber-lr.c: New test.
* gcc.target/aarch64/inc/asm-adder-no-clobber-lr.c: Likewise.
* gcc.target/aarch64/test-framepointer-1.c: Likewise.
* gcc.target/aarch64/test-framepointer-2.c: Likewise.
* gcc.target/aarch64/test-framepointer-3.c: Likewise.
* gcc.target/aarch64/test-framepointer-4.c: Likewise.
* gcc.target/aarch64/test-framepointer-5.c: Likewise.
* gcc.target/aarch64/test-framepointer-6.c: Likewise.
* gcc.target/aarch64/test-framepointer-7.c: Likewise.
* gcc.target/aarch64/test-framepointer-8.c: Likewise.
2013-03-28 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/56725

48
gcc/testsuite/gcc.target/aarch64/asm-adder-clobber-lr.c Normal file
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@ -0,0 +1,48 @@
extern void abort (void);
int
adder (int a, int b)
{
int result;
__asm__ ("add %w0,%w1,%w2" : "=r"(result) : "r"(a), "r"(b) : "x30");
return result;
}
int
main (int argc, char** argv)
{
int i;
int total = argc;
for (i = 0; i < 20; i++)
total = adder (total, i);
if (total != (190 + argc))
abort ();
return 0;
}
extern void abort (void);
int
adder (int a, int b)
{
int result;
__asm__ ("add %w0,%w1,%w2" : "=r"(result) : "r"(a), "r"(b) : "x30");
return result;
}
int
main (int argc, char** argv)
{
int i;
int total = argc;
for (i = 0; i < 20; i++)
total = adder (total, i);
if (total != (190 + argc))
abort ();
return 0;
}

48
gcc/testsuite/gcc.target/aarch64/asm-adder-no-clobber-lr.c Normal file
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@ -0,0 +1,48 @@
extern void abort (void);
int
adder (int a, int b)
{
int result;
__asm__ ("add %w0,%w1,%w2" : "=r"(result) : "r"(a), "r"(b) : );
return result;
}
int
main (int argc, char** argv)
{
int i;
int total = argc;
for (i = 0; i < 20; i++)
total = adder (total, i);
if (total != (190 + argc))
abort ();
return 0;
}
extern void abort (void);
int
adder (int a, int b)
{
int result;
__asm__ ("add %w0,%w1,%w2" : "=r"(result) : "r"(a), "r"(b) : );
return result;
}
int
main (int argc, char** argv)
{
int i;
int total = argc;
for (i = 0; i < 20; i++)
total = adder (total, i);
if (total != (190 + argc))
abort ();
return 0;
}

30
gcc/testsuite/gcc.target/aarch64/test-framepointer-1.c Normal file
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@ -0,0 +1,30 @@
/* { dg-do run } */
/* { dg-options "-O2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-no-clobber-lr.c"
/* omit-frame-pointer is FALSE.
omit-leaf-frame-pointer is FALSE.
LR is not being clobbered in the leaf.
With no frame pointer omissions, we expect a frame record
for main and the leaf. */
/* { dg-final { scan-assembler-times "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" 2 } } */
/* { dg-final { cleanup-saved-temps } } */
/* { dg-do run } */
/* { dg-options "-O2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-no-clobber-lr.c"
/* omit-frame-pointer is FALSE.
omit-leaf-frame-pointer is FALSE.
LR is not being clobbered in the leaf.
With no frame pointer omissions, we expect a frame record
for main and the leaf. */
/* { dg-final { scan-assembler-times "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" 2 } } */
/* { dg-final { cleanup-saved-temps } } */

30
gcc/testsuite/gcc.target/aarch64/test-framepointer-2.c Normal file
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@ -0,0 +1,30 @@
/* { dg-do run } */
/* { dg-options "-O2 -fomit-frame-pointer -mno-omit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-no-clobber-lr.c"
/* omit-frame-pointer is TRUE.
omit-leaf-frame-pointer is false, but irrelevant due to omit-frame-pointer.
LR is not being clobbered in the leaf.
Since we asked to have no frame pointers anywhere, we expect no frame
record in main or the leaf. */
/* { dg-final { scan-assembler-not "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" } } */
/* { dg-final { cleanup-saved-temps } } */
/* { dg-do run } */
/* { dg-options "-O2 -fomit-frame-pointer -mno-omit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-no-clobber-lr.c"
/* omit-frame-pointer is TRUE.
omit-leaf-frame-pointer is false, but irrelevant due to omit-frame-pointer.
LR is not being clobbered in the leaf.
Since we asked to have no frame pointers anywhere, we expect no frame
record in main or the leaf. */
/* { dg-final { scan-assembler-not "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" } } */
/* { dg-final { cleanup-saved-temps } } */

30
gcc/testsuite/gcc.target/aarch64/test-framepointer-3.c Normal file
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@ -0,0 +1,30 @@
/* { dg-do run } */
/* { dg-options "-O2 -fomit-frame-pointer -momit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-no-clobber-lr.c"
/* omit-frame-pointer is TRUE.
omit-leaf-frame-pointer is true, but irrelevant due to omit-frame-pointer.
LR is not being clobbered in the leaf.
Since we asked to have no frame pointers anywhere, we expect no frame
record in main or the leaf. */
/* { dg-final { scan-assembler-not "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" } } */
/* { dg-final { cleanup-saved-temps } } */
/* { dg-do run } */
/* { dg-options "-O2 -fomit-frame-pointer -momit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-no-clobber-lr.c"
/* omit-frame-pointer is TRUE.
omit-leaf-frame-pointer is true, but irrelevant due to omit-frame-pointer.
LR is not being clobbered in the leaf.
Since we asked to have no frame pointers anywhere, we expect no frame
record in main or the leaf. */
/* { dg-final { scan-assembler-not "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" } } */
/* { dg-final { cleanup-saved-temps } } */

32
gcc/testsuite/gcc.target/aarch64/test-framepointer-4.c Normal file
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@ -0,0 +1,32 @@
/* { dg-do run } */
/* { dg-options "-O2 -fno-omit-frame-pointer -momit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-no-clobber-lr.c"
/* omit-frame-pointer is FALSE.
omit-leaf-frame-pointer is TRUE.
LR is not being clobbered in the leaf.
Unless we are removing all frame records, it's OK to remove the frame
record for a leaf where LR is not clobbered. Therefore, we expect a
frame record only in main. */
/* { dg-final { scan-assembler-times "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" 1 } } */
/* { dg-final { cleanup-saved-temps } } */
/* { dg-do run } */
/* { dg-options "-O2 -fno-omit-frame-pointer -momit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-no-clobber-lr.c"
/* omit-frame-pointer is FALSE.
omit-leaf-frame-pointer is TRUE.
LR is not being clobbered in the leaf.
Unless we are removing all frame records, it's OK to remove the frame
record for a leaf where LR is not clobbered. Therefore, we expect a
frame record only in main. */
/* { dg-final { scan-assembler-times "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" 1 } } */
/* { dg-final { cleanup-saved-temps } } */

30
gcc/testsuite/gcc.target/aarch64/test-framepointer-5.c Normal file
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@ -0,0 +1,30 @@
/* { dg-do run } */
/* { dg-options "-O2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-clobber-lr.c"
/* omit-frame-pointer is FALSE.
omit-leaf-frame-pointer is FALSE.
LR is being clobbered in the leaf.
With no frame pointer omissions, we expect a frame record for main
and the leaf. */
/* { dg-final { scan-assembler-times "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" 2 } } */
/* { dg-final { cleanup-saved-temps } } */
/* { dg-do run } */
/* { dg-options "-O2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-clobber-lr.c"
/* omit-frame-pointer is FALSE.
omit-leaf-frame-pointer is FALSE.
LR is being clobbered in the leaf.
With no frame pointer omissions, we expect a frame record for main
and the leaf. */
/* { dg-final { scan-assembler-times "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" 2 } } */
/* { dg-final { cleanup-saved-temps } } */

30
gcc/testsuite/gcc.target/aarch64/test-framepointer-6.c Normal file
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@ -0,0 +1,30 @@
/* { dg-do run } */
/* { dg-options "-O2 -fomit-frame-pointer -mno-omit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-clobber-lr.c"
/* omit-frame-pointer is TRUE.
omit-leaf-frame-pointer is false, but irrelevant due to omit-frame-pointer.
LR is being clobbered in the leaf.
Since we asked to have no frame pointers anywhere, we expect no frame
record in main or the leaf. */
/* { dg-final { scan-assembler-not "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" } } */
/* { dg-final { cleanup-saved-temps } } */
/* { dg-do run } */
/* { dg-options "-O2 -fomit-frame-pointer -mno-omit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-clobber-lr.c"
/* omit-frame-pointer is TRUE.
omit-leaf-frame-pointer is false, but irrelevant due to omit-frame-pointer.
LR is being clobbered in the leaf.
Since we asked to have no frame pointers anywhere, we expect no frame
record in main or the leaf. */
/* { dg-final { scan-assembler-not "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" } } */
/* { dg-final { cleanup-saved-temps } } */

30
gcc/testsuite/gcc.target/aarch64/test-framepointer-7.c Normal file
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@ -0,0 +1,30 @@
/* { dg-do run } */
/* { dg-options "-O2 -fomit-frame-pointer -momit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-clobber-lr.c"
/* omit-frame-pointer is TRUE.
omit-leaf-frame-pointer is true, but irrelevant due to omit-frame-pointer.
LR is being clobbered in the leaf.
Since we asked to have no frame pointers anywhere, we expect no frame
record in main or the leaf. */
/* { dg-final { scan-assembler-not "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" } } */
/* { dg-final { cleanup-saved-temps } } */
/* { dg-do run } */
/* { dg-options "-O2 -fomit-frame-pointer -momit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-clobber-lr.c"
/* omit-frame-pointer is TRUE.
omit-leaf-frame-pointer is true, but irrelevant due to omit-frame-pointer.
LR is being clobbered in the leaf.
Since we asked to have no frame pointers anywhere, we expect no frame
record in main or the leaf. */
/* { dg-final { scan-assembler-not "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" } } */
/* { dg-final { cleanup-saved-temps } } */

32
gcc/testsuite/gcc.target/aarch64/test-framepointer-8.c Normal file
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@ -0,0 +1,32 @@
/* { dg-do run } */
/* { dg-options "-O2 -fno-omit-frame-pointer -momit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-clobber-lr.c"
/* omit-frame-pointer is FALSE.
omit-leaf-frame-pointer is TRUE.
LR is being clobbered in the leaf.
Unless we are removing all frame records (which we aren't), it's
not OK to remove the frame record for a leaf where LR is clobbered.
Therefore, we expect a frame record in main and leaf. */
/* { dg-final { scan-assembler-times "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" 2 } } */
/* { dg-final { cleanup-saved-temps } } */
/* { dg-do run } */
/* { dg-options "-O2 -fno-omit-frame-pointer -momit-leaf-frame-pointer -fno-inline --save-temps" } */
#include "asm-adder-clobber-lr.c"
/* omit-frame-pointer is FALSE.
omit-leaf-frame-pointer is TRUE.
LR is being clobbered in the leaf.
Unless we are removing all frame records (which we aren't), it's
not OK to remove the frame record for a leaf where LR is clobbered.
Therefore, we expect a frame record in main and leaf. */
/* { dg-final { scan-assembler-times "stp\tx29, x30, \\\[sp, -\[0-9\]+\\\]!" 2 } } */
/* { dg-final { cleanup-saved-temps } } */