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[AArch64] PR rtl-optimization/68664 Implement TARGET_SCHED_CAN_SPECULATE_INSN hook

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PR rtl-optimization/68664
	* config/aarch64/aarch64.c (aarch64_sched_can_speculate_insn):
	New function.
	(TARGET_SCHED_CAN_SPECULATE_INSN): Define.

From-SVN: r245424
This commit is contained in:
Kyrylo Tkachov 2017-02-14 10:31:14 +00:00 committed by Kyrylo Tkachov
parent c8431fc9b5
commit b48d642189
2 changed files with 39 additions and 0 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2017-02-14 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
PR rtl-optimization/68664
* config/aarch64/aarch64.c (aarch64_sched_can_speculate_insn):
New function.
(TARGET_SCHED_CAN_SPECULATE_INSN): Define.
2017-02-14 Amit Pawar <amit.pawar@amd.com>
* config/i386/i386.c (znver1_cost): Fix the alignment for function and

32
gcc/config/aarch64/aarch64.c
View File

@ -14682,6 +14682,35 @@ aarch64_excess_precision (enum excess_precision_type type)
return FLT_EVAL_METHOD_UNPREDICTABLE;
}
/* Implement TARGET_SCHED_CAN_SPECULATE_INSN. Return true if INSN can be
scheduled for speculative execution. Reject the long-running division
and square-root instructions. */
static bool
aarch64_sched_can_speculate_insn (rtx_insn *insn)
{
switch (get_attr_type (insn))
{
case TYPE_SDIV:
case TYPE_UDIV:
case TYPE_FDIVS:
case TYPE_FDIVD:
case TYPE_FSQRTS:
case TYPE_FSQRTD:
case TYPE_NEON_FP_SQRT_S:
case TYPE_NEON_FP_SQRT_D:
case TYPE_NEON_FP_SQRT_S_Q:
case TYPE_NEON_FP_SQRT_D_Q:
case TYPE_NEON_FP_DIV_S:
case TYPE_NEON_FP_DIV_D:
case TYPE_NEON_FP_DIV_S_Q:
case TYPE_NEON_FP_DIV_D_Q:
return false;
default:
return true;
}
}
/* Target-specific selftests. */
#if CHECKING_P
@ -15070,6 +15099,9 @@ aarch64_libgcc_floating_mode_supported_p
#define TARGET_USE_BY_PIECES_INFRASTRUCTURE_P \
aarch64_use_by_pieces_infrastructure_p
#undef TARGET_SCHED_CAN_SPECULATE_INSN
#define TARGET_SCHED_CAN_SPECULATE_INSN aarch64_sched_can_speculate_insn
#undef TARGET_CAN_USE_DOLOOP_P
#define TARGET_CAN_USE_DOLOOP_P can_use_doloop_if_innermost