rs6000-cpus.def (ISA_FUTURE_MASKS_SERVER): Add OPTION_MASK_PCREL.
2019-05-22 Bill Schmidt <wschmidt@linux.ibm.com> Michael Meissner <meissner@linux.ibm.com> Segher Boessenkool <segher@kernel.crashing.org> * config/rs6000/rs6000-cpus.def (ISA_FUTURE_MASKS_SERVER): Add OPTION_MASK_PCREL. (POWERPC_MASKS): Add OPTION_MASK_PCREL. * config/rs6000/rs6000-protos.h (rs6000_pcrel_p): New prototype. (rs6000_fndecl_pcrel_p): Likewise. * config/rs6000/rs6000.c (rs6000_option_override_internal): Report error if -mpcrel is requested without -mcpu=future. (rs6000_opt_masks): Add entry for pcrel. (rs6000_fndecl_pcrel_p): New function. (rs6000_pcrel_p): Likewise. * config/rs6000/rs6000.opt (mpcrel): New option. * doc/invoke.texi: Document -mpcrel and -mno-pcrel. Co-Authored-By: Michael Meissner <meissner@linux.ibm.com> Co-Authored-By: Segher Boessenkool <segher@kernel.crashing.org> From-SVN: r271575
This commit is contained in:
Bill Schmidt
William Schmidt
parent
0ce91914ad
commit
9111760356
6 changed files with 72 additions and 2 deletions
|
|
@ -1,3 +1,20 @@
|
|||
2019-05-23 Bill Schmidt <wschmidt@linux.ibm.com>
|
||||
Michael Meissner <meissner@linux.ibm.com>
|
||||
Segher Boessenkool <segher@kernel.crashing.org>
|
||||
|
||||
* config/rs6000/rs6000-cpus.def (ISA_FUTURE_MASKS_SERVER): Add
|
||||
OPTION_MASK_PCREL.
|
||||
(POWERPC_MASKS): Add OPTION_MASK_PCREL.
|
||||
* config/rs6000/rs6000-protos.h (rs6000_pcrel_p): New prototype.
|
||||
(rs6000_fndecl_pcrel_p): Likewise.
|
||||
* config/rs6000/rs6000.c (rs6000_option_override_internal): Report
|
||||
error if -mpcrel is requested without -mcpu=future.
|
||||
(rs6000_opt_masks): Add entry for pcrel.
|
||||
(rs6000_fndecl_pcrel_p): New function.
|
||||
(rs6000_pcrel_p): Likewise.
|
||||
* config/rs6000/rs6000.opt (mpcrel): New option.
|
||||
* doc/invoke.texi: Document -mpcrel and -mno-pcrel.
|
||||
|
||||
2019-05-23 Jan Hubicka <jh@suse.cz>
|
||||
Martin Liska <mliska@suse.cz>
|
||||
|
||||
|
|
|
|||
|
|
@ -74,7 +74,8 @@
|
|||
|
||||
/* Support for a future processor's features. */
|
||||
#define ISA_FUTURE_MASKS_SERVER (ISA_3_0_MASKS_SERVER \
|
||||
| OPTION_MASK_FUTURE)
|
||||
| OPTION_MASK_FUTURE \
|
||||
| OPTION_MASK_PCREL)
|
||||
|
||||
/* Flags that need to be turned off if -mno-power9-vector. */
|
||||
#define OTHER_P9_VECTOR_MASKS (OPTION_MASK_FLOAT128_HW \
|
||||
|
|
@ -129,6 +130,7 @@
|
|||
| OPTION_MASK_P9_MINMAX \
|
||||
| OPTION_MASK_P9_MISC \
|
||||
| OPTION_MASK_P9_VECTOR \
|
||||
| OPTION_MASK_PCREL \
|
||||
| OPTION_MASK_POPCNTB \
|
||||
| OPTION_MASK_POPCNTD \
|
||||
| OPTION_MASK_POWERPC64 \
|
||||
|
|
|
|||
|
|
@ -152,6 +152,8 @@ extern rtx rs6000_machopic_legitimize_pic_address (rtx, machine_mode,
|
|||
extern rtx rs6000_allocate_stack_temp (machine_mode, bool, bool);
|
||||
extern align_flags rs6000_loop_align (rtx);
|
||||
extern void rs6000_split_logical (rtx [], enum rtx_code, bool, bool, bool);
|
||||
extern bool rs6000_pcrel_p (struct function *);
|
||||
extern bool rs6000_fndecl_pcrel_p (const_tree);
|
||||
#endif /* RTX_CODE */
|
||||
|
||||
#ifdef TREE_CODE
|
||||
|
|
|
|||
|
|
@ -4296,6 +4296,15 @@ rs6000_option_override_internal (bool global_init_p)
|
|||
rs6000_isa_flags &= ~OPTION_MASK_FLOAT128_HW;
|
||||
}
|
||||
|
||||
/* -mpcrel requires the prefixed load/store support on FUTURE systems. */
|
||||
if (!TARGET_FUTURE && TARGET_PCREL)
|
||||
{
|
||||
if ((rs6000_isa_flags_explicit & OPTION_MASK_PCREL) != 0)
|
||||
error ("%qs requires %qs", "-mpcrel", "-mcpu=future");
|
||||
|
||||
rs6000_isa_flags &= ~OPTION_MASK_PCREL;
|
||||
}
|
||||
|
||||
/* Print the options after updating the defaults. */
|
||||
if (TARGET_DEBUG_REG || TARGET_DEBUG_TARGET)
|
||||
rs6000_print_isa_options (stderr, 0, "after defaults", rs6000_isa_flags);
|
||||
|
|
@ -36274,6 +36283,7 @@ static struct rs6000_opt_mask const rs6000_opt_masks[] =
|
|||
{ "modulo", OPTION_MASK_MODULO, false, true },
|
||||
{ "mulhw", OPTION_MASK_MULHW, false, true },
|
||||
{ "multiple", OPTION_MASK_MULTIPLE, false, true },
|
||||
{ "pcrel", OPTION_MASK_PCREL, false, true },
|
||||
{ "popcntb", OPTION_MASK_POPCNTB, false, true },
|
||||
{ "popcntd", OPTION_MASK_POPCNTD, false, true },
|
||||
{ "power8-fusion", OPTION_MASK_P8_FUSION, false, true },
|
||||
|
|
@ -38113,6 +38123,34 @@ rs6000_save_toc_in_prologue_p (void)
|
|||
return (cfun && cfun->machine && cfun->machine->save_toc_in_prologue);
|
||||
}
|
||||
|
||||
/* Return whether we should generate PC-relative code for FNDECL. */
|
||||
bool
|
||||
rs6000_fndecl_pcrel_p (const_tree fndecl)
|
||||
{
|
||||
if (DEFAULT_ABI != ABI_ELFv2)
|
||||
return false;
|
||||
|
||||
struct cl_target_option *opts = target_opts_for_fn (fndecl);
|
||||
|
||||
return ((opts->x_rs6000_isa_flags & OPTION_MASK_PCREL) != 0
|
||||
&& TARGET_CMODEL == CMODEL_MEDIUM);
|
||||
}
|
||||
|
||||
/* Return whether we should generate PC-relative code for *FN. */
|
||||
bool
|
||||
rs6000_pcrel_p (struct function *fn)
|
||||
{
|
||||
if (DEFAULT_ABI != ABI_ELFv2)
|
||||
return false;
|
||||
|
||||
/* Optimize usual case. */
|
||||
if (fn == cfun)
|
||||
return ((rs6000_isa_flags & OPTION_MASK_PCREL) != 0
|
||||
&& TARGET_CMODEL == CMODEL_MEDIUM);
|
||||
|
||||
return rs6000_fndecl_pcrel_p (fn->decl);
|
||||
}
|
||||
|
||||
#ifdef HAVE_GAS_HIDDEN
|
||||
# define USE_HIDDEN_LINKONCE 1
|
||||
#else
|
||||
|
|
|
|||
|
|
@ -573,3 +573,7 @@ Target Undocumented Var(rs6000_speculate_indirect_jumps) Init(1) Save
|
|||
mfuture
|
||||
Target Report Mask(FUTURE) Var(rs6000_isa_flags)
|
||||
Use instructions for a future architecture.
|
||||
|
||||
mpcrel
|
||||
Target Report Mask(PCREL) Var(rs6000_isa_flags)
|
||||
Generate (do not generate) pc-relative memory addressing.
|
||||
|
|
|
|||
|
|
@ -1121,7 +1121,7 @@ See RS/6000 and PowerPC Options.
|
|||
-mfloat128 -mno-float128 -mfloat128-hardware -mno-float128-hardware @gol
|
||||
-mgnu-attribute -mno-gnu-attribute @gol
|
||||
-mstack-protector-guard=@var{guard} -mstack-protector-guard-reg=@var{reg} @gol
|
||||
-mstack-protector-guard-offset=@var{offset}}
|
||||
-mstack-protector-guard-offset=@var{offset} -mpcrel -mno-pcrel}
|
||||
|
||||
@emph{RX Options}
|
||||
@gccoptlist{-m64bit-doubles -m32bit-doubles -fpu -nofpu@gol
|
||||
|
|
@ -25095,6 +25095,13 @@ which register to use as base register for reading the canary, and from what
|
|||
offset from that base register. The default for those is as specified in the
|
||||
relevant ABI. @option{-mstack-protector-guard-symbol=@var{symbol}} overrides
|
||||
the offset with a symbol reference to a canary in the TLS block.
|
||||
|
||||
@item -mpcrel
|
||||
@itemx -mno-pcrel
|
||||
@opindex mpcrel
|
||||
@opindex mno-pcrel
|
||||
Generate (do not generate) pc-relative addressing when the option
|
||||
@option{-mcpu=future} is used.
|
||||
@end table
|
||||
|
||||
@node RX Options
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue