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bfin.opt (micplb): New option.
* config/bfin/bfin.opt (micplb): New option. * config/bfin/linux.h (SUBTARGET_DRIVER_SELF_SPECS): Set it. * config/bfin/bfin-protos.h (WA_INDIRECT_CALLS, ENABLE_WA_INDIRECT_CALLS): New macros. * config/bfin/bfin.c (bfin_cpus): Add WA_INDIRECT_CALLS to all 54x CPUs. (indirect_call_p): New function. (workaround_speculation): Handle anomaly 05-00-0426 when ENABLE_WA_INDIRECT_CALLS is true. * config/bfin/bfin.h (TARGET_CPU_CPP_BUILTINS): Define __WORKAROUND_INDIRECT_CALLS if ENABLE_WA_INDIRECT_CALLS. * doc/invoke.texi (Blackfin Options): Document -micplb. From-SVN: r142240
This commit is contained in:
Bernd Schmidt
Bernd Schmidt
parent
58ad17cfc6
commit
bf85bc3dcc
@ -1,3 +1,18 @@
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2008-11-27 Bernd Schmidt <bernd.schmidt@analog.com>
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* config/bfin/bfin.opt (micplb): New option.
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* config/bfin/linux.h (SUBTARGET_DRIVER_SELF_SPECS): Set it.
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* config/bfin/bfin-protos.h (WA_INDIRECT_CALLS,
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ENABLE_WA_INDIRECT_CALLS): New macros.
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* config/bfin/bfin.c (bfin_cpus): Add WA_INDIRECT_CALLS to
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all 54x CPUs.
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(indirect_call_p): New function.
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(workaround_speculation): Handle anomaly 05-00-0426 when
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ENABLE_WA_INDIRECT_CALLS is true.
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* config/bfin/bfin.h (TARGET_CPU_CPP_BUILTINS): Define
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__WORKAROUND_INDIRECT_CALLS if ENABLE_WA_INDIRECT_CALLS.
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* doc/invoke.texi (Blackfin Options): Document -micplb.
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2008-11-26 DJ Delorie <dj@redhat.com>
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* config/m32c/mov.md ("extendhipsi2"): New.
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@ -75,6 +75,11 @@ extern unsigned int bfin_workarounds;
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#define ENABLE_WA_RETS \
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(bfin_workarounds & WA_RETS)
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/* For the anomaly 05-00-0426 */
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#define WA_INDIRECT_CALLS 0x00000008
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#define ENABLE_WA_INDIRECT_CALLS \
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((bfin_workarounds & WA_INDIRECT_CALLS) && !TARGET_ICPLB)
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#define WA_05000257 0x00000040
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#define ENABLE_WA_05000257 \
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(bfin_workarounds & WA_05000257)
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@ -254,39 +254,39 @@ struct bfin_cpu bfin_cpus[] =
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| WA_05000283 | WA_05000257 | WA_05000315},
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{"bf542", BFIN_CPU_BF542, 0x0002,
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WA_SPECULATIVE_LOADS},
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WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS},
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{"bf542", BFIN_CPU_BF542, 0x0001,
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WA_SPECULATIVE_LOADS | WA_RETS},
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WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS},
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{"bf542", BFIN_CPU_BF542, 0x0000,
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WA_SPECULATIVE_LOADS | WA_RETS},
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WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS},
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{"bf544", BFIN_CPU_BF544, 0x0002,
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WA_SPECULATIVE_LOADS},
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WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS},
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{"bf544", BFIN_CPU_BF544, 0x0001,
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WA_SPECULATIVE_LOADS | WA_RETS},
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WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS},
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{"bf544", BFIN_CPU_BF544, 0x0000,
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WA_SPECULATIVE_LOADS | WA_RETS},
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WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS},
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{"bf547", BFIN_CPU_BF547, 0x0002,
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WA_SPECULATIVE_LOADS},
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WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS},
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{"bf547", BFIN_CPU_BF547, 0x0001,
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WA_SPECULATIVE_LOADS | WA_RETS},
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WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS},
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{"bf547", BFIN_CPU_BF547, 0x0000,
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WA_SPECULATIVE_LOADS | WA_RETS},
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WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS},
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{"bf548", BFIN_CPU_BF548, 0x0002,
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WA_SPECULATIVE_LOADS},
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WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS},
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{"bf548", BFIN_CPU_BF548, 0x0001,
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WA_SPECULATIVE_LOADS | WA_RETS},
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WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS},
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{"bf548", BFIN_CPU_BF548, 0x0000,
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WA_SPECULATIVE_LOADS | WA_RETS},
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WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS},
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{"bf549", BFIN_CPU_BF549, 0x0002,
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WA_SPECULATIVE_LOADS},
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WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS},
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{"bf549", BFIN_CPU_BF549, 0x0001,
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WA_SPECULATIVE_LOADS | WA_RETS},
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WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS},
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{"bf549", BFIN_CPU_BF549, 0x0000,
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WA_SPECULATIVE_LOADS | WA_RETS},
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WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS},
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{"bf561", BFIN_CPU_BF561, 0x0005, WA_RETS
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| WA_05000283 | WA_05000315},
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@ -4921,6 +4921,22 @@ find_load (rtx insn)
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return NULL_RTX;
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}
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/* Determine whether PAT is an indirect call pattern. */
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static bool
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indirect_call_p (rtx pat)
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{
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if (GET_CODE (pat) == PARALLEL)
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pat = XVECEXP (pat, 0, 0);
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if (GET_CODE (pat) == SET)
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pat = SET_SRC (pat);
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gcc_assert (GET_CODE (pat) == CALL);
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pat = XEXP (pat, 0);
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gcc_assert (GET_CODE (pat) == MEM);
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pat = XEXP (pat, 0);
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return REG_P (pat);
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}
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static void
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workaround_speculation (void)
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{
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@ -4929,7 +4945,8 @@ workaround_speculation (void)
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int cycles_since_jump = INT_MAX;
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int delay_added = 0;
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if (! ENABLE_WA_SPECULATIVE_LOADS && ! ENABLE_WA_SPECULATIVE_SYNCS)
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if (! ENABLE_WA_SPECULATIVE_LOADS && ! ENABLE_WA_SPECULATIVE_SYNCS
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&& ! ENABLE_WA_INDIRECT_CALLS)
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return;
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/* First pass: find predicted-false branches; if something after them
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@ -4962,6 +4979,15 @@ workaround_speculation (void)
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else
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cycles_since_jump = INT_MAX;
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}
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else if (CALL_P (insn))
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{
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if (cycles_since_jump < INT_MAX)
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cycles_since_jump++;
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if (indirect_call_p (pat) && ENABLE_WA_INDIRECT_CALLS)
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{
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delay_needed = 3;
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}
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}
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else if (INSN_P (insn))
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{
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rtx load_insn = find_load (insn);
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@ -149,8 +149,10 @@ extern int target_flags;
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builtin_define ("__WORKAROUND_SPECULATIVE_LOADS"); \
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if (ENABLE_WA_SPECULATIVE_SYNCS) \
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builtin_define ("__WORKAROUND_SPECULATIVE_SYNCS"); \
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if (ENABLE_WA_SPECULATIVE_SYNCS) \
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builtin_define ("__WORKAROUND_INDIRECT_CALLS"); \
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if (ENABLE_WA_RETS) \
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builtin_define ("__WORKAROUND_RETS"); \
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builtin_define ("__WORKAROUND_RETS"); \
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\
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if (TARGET_FDPIC) \
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{ \
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@ -95,3 +95,7 @@ Build for Core B
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msdram
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Target Report Mask(SDRAM)
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Build for SDRAM
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micplb
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Target Report Mask(ICPLB)
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Assume ICPLBs are enabled at runtime.
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@ -1,6 +1,6 @@
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#undef SUBTARGET_DRIVER_SELF_SPECS
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#define SUBTARGET_DRIVER_SELF_SPECS \
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"%{!mno-fdpic:-mfdpic}",
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"%{!mno-fdpic:-mfdpic} -micplb",
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#undef TARGET_OS_CPP_BUILTINS
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#define TARGET_OS_CPP_BUILTINS() LINUX_TARGET_OS_CPP_BUILTINS()
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@ -468,7 +468,8 @@ Objective-C and Objective-C++ Dialects}.
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-mno-id-shared-library -mshared-library-id=@var{n} @gol
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-mleaf-id-shared-library -mno-leaf-id-shared-library @gol
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-msep-data -mno-sep-data -mlong-calls -mno-long-calls @gol
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-mfast-fp -minline-plt -mmulticore -mcorea -mcoreb -msdram}
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-mfast-fp -minline-plt -mmulticore -mcorea -mcoreb -msdram @gol
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-micplb}
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@emph{CRIS Options}
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@gccoptlist{-mcpu=@var{cpu} -march=@var{cpu} -mtune=@var{cpu} @gol
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@ -9312,6 +9313,12 @@ Build standalone application for SDRAM. Proper start files and
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link scripts will be used to put the application into SDRAM.
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Loader should initialize SDRAM before loading the application
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into SDRAM. This option defines @code{__BFIN_SDRAM}.
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@item -micplb
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@opindex micplb
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Assume that ICPLBs are enabled at runtime. This has an effect on certain
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anomaly workarounds. For Linux targets, the default is to assume ICPLBs
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are enabled; for standalone applications the default is off.
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@end table
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@node CRIS Options
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