OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

arm.c (require_pic_register): Handle high pic base register for thumb-1.

Browse Source 
gcc/ChangeLog
2013-11-26  Terry Guo  <terry.guo@arm.com>

	* config/arm/arm.c (require_pic_register): Handle high pic base
	register for thumb-1.
	(arm_load_pic_register): Also initialize high pic base register.
	* doc/invoke.texi: Update documentation for option -mpic-register.

gcc/testsuite/ChangeLog
2013-11-26  Terry Guo  <terry.guo@arm.com>

	* gcc.target/arm/thumb1-pic-high-reg.c: New case.
	* gcc.target/arm/thumb1-pic-single-base.c: New case.

From-SVN: r205391
This commit is contained in:
Terry Guo 2013-11-26 11:58:37 +00:00 committed by Xuepeng Guo
parent 91f65b12bb
commit 84c44566f3
6 changed files with 55 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2013-11-26 Terry Guo <terry.guo@arm.com>
* config/arm/arm.c (require_pic_register): Handle high pic base
register for thumb-1.
(arm_load_pic_register): Also initialize high pic base register.
* doc/invoke.texi: Update documentation for option -mpic-register.
2013-11-26 Oleg Endo <olegendo@gcc.gnu.org>
PR target/58314

18
gcc/config/arm/arm.c
View File

@ -5917,7 +5917,8 @@ require_pic_register (void)
if (!crtl->uses_pic_offset_table)
{
gcc_assert (can_create_pseudo_p ());
if (arm_pic_register != INVALID_REGNUM)
if (arm_pic_register != INVALID_REGNUM
&& !(TARGET_THUMB1 && arm_pic_register > LAST_LO_REGNUM))
{
if (!cfun->machine->pic_reg)
cfun->machine->pic_reg = gen_rtx_REG (Pmode, arm_pic_register);
@ -5943,7 +5944,12 @@ require_pic_register (void)
crtl->uses_pic_offset_table = 1;
start_sequence ();
arm_load_pic_register (0UL);
if (TARGET_THUMB1 && arm_pic_register != INVALID_REGNUM
&& arm_pic_register > LAST_LO_REGNUM)
emit_move_insn (cfun->machine->pic_reg,
gen_rtx_REG (Pmode, arm_pic_register));
else
arm_load_pic_register (0UL);
seq = get_insns ();
end_sequence ();
@ -6202,6 +6208,14 @@ arm_load_pic_register (unsigned long saved_regs ATTRIBUTE_UNUSED)
emit_insn (gen_movsi (pic_offset_table_rtx, pic_tmp));
emit_insn (gen_pic_add_dot_plus_four (pic_reg, pic_reg, labelno));
}
else if (arm_pic_register != INVALID_REGNUM
&& arm_pic_register > LAST_LO_REGNUM
&& REGNO (pic_reg) <= LAST_LO_REGNUM)
{
emit_insn (gen_pic_load_addr_unified (pic_reg, pic_rtx, labelno));
emit_move_insn (gen_rtx_REG (Pmode, arm_pic_register), pic_reg);
emit_use (gen_rtx_REG (Pmode, arm_pic_register));
}
else
emit_insn (gen_pic_load_addr_unified (pic_reg, pic_rtx, labelno));
}

7
gcc/doc/invoke.texi
View File

@ -12216,8 +12216,11 @@ before execution begins.
@item -mpic-register=@var{reg}
@opindex mpic-register
Specify the register to be used for PIC addressing. The default is R10
unless stack-checking is enabled, when R9 is used.
Specify the register to be used for PIC addressing.
For standard PIC base case, the default will be any suitable register
determined by compiler. For single PIC base case, the default is
@samp{R9} if target is EABI based or stack-checking is enabled,
otherwise the default is @samp{R10}.
@item -mpic-data-is-text-relative
@opindex mpic-data-is-text-relative

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2013-11-26 Terry Guo <terry.guo@arm.com>
* gcc.target/arm/thumb1-pic-high-reg.c: New case.
* gcc.target/arm/thumb1-pic-single-base.c: New case.
2013-11-26 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/58700

11
gcc/testsuite/gcc.target/arm/thumb1-pic-high-reg.c Normal file
View File

@ -0,0 +1,11 @@
/* { dg-do compile } */
/* { dg-require-effective-target arm_thumb1_ok } */
/* { dg-options "-mthumb -fpic -mpic-register=9" } */
int g_test;
int
foo (int par)
{
g_test = par;
}

11
gcc/testsuite/gcc.target/arm/thumb1-pic-single-base.c Normal file
View File

@ -0,0 +1,11 @@
/* { dg-do compile } */
/* { dg-require-effective-target arm_thumb1_ok } */
/* { dg-options "-mthumb -fpic -msingle-pic-base" } */
int g_test;
int
foo (int par)
{
g_test = par;
}