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riscv-gcc-1
Commit b38ba463 by Zack Weinberg
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ia64.md (UNSPEC_SETF_EXP,UNSPEC_FR_SQRT_RECIP_APPROX): New constants. 

	* ia64.md (UNSPEC_SETF_EXP,UNSPEC_FR_SQRT_RECIP_APPROX): New constants.
	(*sqrt_approx): New instruction pattern for approximate square roots.
	(*setf_exp_xf): New instruction pattern for exponentiation.
	(*maddxf4_alts_truncsf): New instruction pattern for truncation.
	(sqrtsf2_internal_thr): New define_and_split implementing
	throughput-optimized inline calculation of SFmode square root.
	(sqrtdf2_internal_thr): Likewise for DFmode.
	(sqrtxf2_internal_thr): Likewise for XFmode.
	(sqrtsf2, sqrtdf2, sqrtxf2): New expanders to choose between
	latency- and throughput-optimized square root algorithms.
	* ia64.h (MASK_INLINE_SQRT_LAT, MASK_INLINE_SQRT_THR,
	TARGET_INLINE_SQRT_LAT, TARGET_INLINE_SQRT_THR, TARGET_INLINE_SQRT):
	New macros.
	(TARGET_SWITCHES): Add -minline-sqrt-min-latency and
	-minline-sqrt-max-throughput.
	* ia64.c (ia64_override_options): If both -minline-sqrt-min-latency
	and -minline-sqrt-max-throughput are given, notify the user
	that both options cannot be used simultaneously.
	If -minline-sqrt-min-latency is given, notify the user that
	this mode is not yet implemented.
	(rtx_needs_barrier): Reformat initial comment to obey
	72-character width limit.  Support UNSPEC_SETF_EXP and
	UNSPEC_FR_SQRT_RECIP_APPROX.

From-SVN: r73027
parent 1e8fee4a
Showing with 59 additions and 4 deletions
gcc/ChangeLog
2003-10-28 Zack Weinberg <zack@codesourcery.com>
* ia64.md (UNSPEC_SETF_EXP,UNSPEC_FR_SQRT_RECIP_APPROX): New constants.
(*sqrt_approx): New instruction pattern for approximate square roots.
(*setf_exp_xf): New instruction pattern for exponentiation.
(*maddxf4_alts_truncsf): New instruction pattern for truncation.
(sqrtsf2_internal_thr): New define_and_split implementing
throughput-optimized inline calculation of SFmode square root.
(sqrtdf2_internal_thr): Likewise for DFmode.
(sqrtxf2_internal_thr): Likewise for XFmode.
(sqrtsf2, sqrtdf2, sqrtxf2): New expanders to choose between
latency- and throughput-optimized square root algorithms.
* ia64.h (MASK_INLINE_SQRT_LAT, MASK_INLINE_SQRT_THR,
TARGET_INLINE_SQRT_LAT, TARGET_INLINE_SQRT_THR, TARGET_INLINE_SQRT):
New macros.
(TARGET_SWITCHES): Add -minline-sqrt-min-latency and
-minline-sqrt-max-throughput.
* ia64.c (ia64_override_options): If both -minline-sqrt-min-latency
and -minline-sqrt-max-throughput are given, notify the user
that both options cannot be used simultaneously.
If -minline-sqrt-min-latency is given, notify the user that
this mode is not yet implemented.
(rtx_needs_barrier): Reformat initial comment to obey
72-character width limit. Support UNSPEC_SETF_EXP and
UNSPEC_FR_SQRT_RECIP_APPROX.
2003-10-29 Alan Modra <amodra@bigpond.net.au>
* config/rs6000/rs6000.md (movdf_softfloat64): Allow dummy ctr,ctr
......@@ -12,7 +38,7 @@
2003-10-28 Richard Earnshaw <rearnsha@arm.com>
* arm.c (arm_output_epilogue): When using a frame pointer, don't emit
an extra stack adjustment insn if the stack pointer is already
an extra stack adjustment insn if the stack pointer is already
pointing at the right place.
(use_return_insn): Allow a return insn to be used when we have a
frame pointer if the stack pointer is in the right place.
......
gcc/config/ia64/ia64.c
......@@ -4487,6 +4487,18 @@ ia64_override_options (void)
target_flags &= ~MASK_INLINE_INT_DIV_THR;
}
if (TARGET_INLINE_SQRT_LAT && TARGET_INLINE_SQRT_THR)
{
warning ("cannot optimize square root for both latency and throughput");
target_flags &= ~MASK_INLINE_SQRT_THR;
}
if (TARGET_INLINE_SQRT_LAT)
{
warning ("not yet implemented: latency-optimized inline square root");
target_flags &= ~MASK_INLINE_SQRT_LAT;
}
if (ia64_fixed_range_string)
fix_range (ia64_fixed_range_string);
......@@ -4896,9 +4908,9 @@ set_src_needs_barrier (rtx x, struct reg_flags flags, int pred, rtx cond)
return need_barrier;
}
/* Handle an access to rtx X of type FLAGS using predicate register PRED.
Return 1 is this access creates a dependency with an earlier instruction
in the same group. */
/* Handle an access to rtx X of type FLAGS using predicate register
PRED. Return 1 if this access creates a dependency with an earlier
instruction in the same group. */
static int
rtx_needs_barrier (rtx x, struct reg_flags flags, int pred)
......@@ -5124,7 +5136,9 @@ rtx_needs_barrier (rtx x, struct reg_flags flags, int pred)
case UNSPEC_FR_SPILL:
case UNSPEC_FR_RESTORE:
case UNSPEC_GETF_EXP:
case UNSPEC_SETF_EXP:
case UNSPEC_ADDP4:
case UNSPEC_FR_SQRT_RECIP_APPROX:
need_barrier = rtx_needs_barrier (XVECEXP (x, 0, 0), flags, pred);
break;
......
gcc/config/ia64/ia64.h
......@@ -87,6 +87,10 @@ extern int target_flags;
#define MASK_INLINE_INT_DIV_THR 0x00001000 /* inline div, max throughput. */
#define MASK_INLINE_SQRT_LAT 0x00002000 /* inline sqrt, min latency. */
#define MASK_INLINE_SQRT_THR 0x00004000 /* inline sqrt, max throughput. */
#define MASK_DWARF2_ASM 0x40000000 /* test dwarf2 line info via gas. */
#define MASK_EARLY_STOP_BITS 0x00002000 /* tune stop bits for the model. */
......@@ -127,6 +131,13 @@ extern int target_flags;
#define TARGET_INLINE_INT_DIV \
(target_flags & (MASK_INLINE_INT_DIV_LAT | MASK_INLINE_INT_DIV_THR))
#define TARGET_INLINE_SQRT_LAT (target_flags & MASK_INLINE_SQRT_LAT)
#define TARGET_INLINE_SQRT_THR (target_flags & MASK_INLINE_SQRT_THR)
#define TARGET_INLINE_SQRT \
(target_flags & (MASK_INLINE_SQRT_LAT | MASK_INLINE_SQRT_THR))
#define TARGET_DWARF2_ASM (target_flags & MASK_DWARF2_ASM)
extern int ia64_tls_size;
......@@ -186,6 +197,10 @@ extern int ia64_tls_size;
N_("Generate inline integer division, optimize for latency") }, \
{ "inline-int-divide-max-throughput", MASK_INLINE_INT_DIV_THR, \
N_("Generate inline integer division, optimize for throughput") },\
{ "inline-sqrt-min-latency", MASK_INLINE_SQRT_LAT, \
N_("Generate inline square root, optimize for latency") }, \
{ "inline-sqrt-max-throughput", MASK_INLINE_SQRT_THR, \
N_("Generate inline square root, optimize for throughput") }, \
{ "dwarf2-asm", MASK_DWARF2_ASM, \
N_("Enable Dwarf 2 line debug info via GNU as")}, \
{ "no-dwarf2-asm", -MASK_DWARF2_ASM, \
......
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