ia64.h (INIT_TARGET_OPTABS): Remove.

* config/ia64/ia64.h (INIT_TARGET_OPTABS): Remove.
        * config/ia64/lib1funcs.asm (__divdi3): Update from Intel IA-64
        Optimization Guide, minimum latency alternative.
        (__moddi3, __udivdi3, __umoddi3): Likewise.
        (__divsi3, __modsi3, __udivsi3, __umodsi3): Likewise.

From-SVN: r36169
This commit is contained in:
Richard Henderson 2000-09-05 16:02:58 -07:00 committed by Richard Henderson
parent 1056d2281e
commit d8d7a2867b
3 changed files with 145 additions and 243 deletions

View file

@ -1,3 +1,11 @@
2000-09-05 Richard Henderson <rth@cygnus.com>
* config/ia64/ia64.h (INIT_TARGET_OPTABS): Remove.
* config/ia64/lib1funcs.asm (__divdi3): Update from Intel IA-64
Optimization Guide, minimum latency alternative.
(__moddi3, __udivdi3, __umoddi3): Likewise.
(__divsi3, __modsi3, __udivsi3, __umodsi3): Likewise.
2000-09-05 Bruce Korb <bkorb@gnu.org>
* gcc/fixinc/fixincl.c(load_file): always read header files

View file

@ -1694,18 +1694,6 @@ do { \
for lib1funcs.asm modules, e.g. __divdi3 vs _divdi3. Since lib1funcs.asm
goes into libgcc.a first, the linker will find it first. */
/* Define this macro as a C statement that declares additional library routines
renames existing ones. */
/* ??? Disable the SImode divide routines for now. */
#define INIT_TARGET_OPTABS \
do { \
sdiv_optab->handlers[(int) SImode].libfunc = 0; \
udiv_optab->handlers[(int) SImode].libfunc = 0; \
smod_optab->handlers[(int) SImode].libfunc = 0; \
umod_optab->handlers[(int) SImode].libfunc = 0; \
} while (0)
/* Define this macro if GNU CC should generate calls to the System V (and ANSI
C) library functions `memcpy' and `memset' rather than the BSD functions
`bcopy' and `bzero'. */

View file

@ -116,16 +116,10 @@ __divsf3:
#ifdef L__divdi3
// Compute a 64-bit integer quotient.
//
// Use reciprocal approximation and Newton-Raphson iteration to compute the
// quotient. frcpa gives 8.6 significant bits, so we need 3 iterations
// to get more than the 64 bits of precision that we need for DImode.
// From the Intel IA-64 Optimization Guide, choose the minimum latency
// alternative.
//
// Must use max precision for the reciprocal computations to get 64 bits of
// precision.
//
// r32/f8 holds the dividend. r33/f9 holds the divisor.
// f10 holds the value 2.0. f11 holds the reciprocal approximation.
// f12 is a temporary.
// in0 holds the dividend. in1 holds the divisor.
.text
.align 16
@ -143,31 +137,26 @@ __divdi3:
;;
// Compute the reciprocal approximation.
frcpa.s1 f10, p6 = f8, f9
;;
// 3 Newton-Raphson iterations.
(p6) fma.s1 f11 = farg0, f10, f0
(p6) fnma.s1 f12 = farg1, f10, f1
(p6) fnma.s1 f11 = f9, f10, f1
(p6) fmpy.s1 f12 = f8, f10
;;
(p6) fma.s1 f11 = f12, f11, f11
(p6) fma.s1 f13 = f12, f12, f0
(p6) fma.s1 f10 = f12, f10, f10
(p6) fmpy.s1 f13 = f11, f11
(p6) fma.s1 f12 = f11, f12, f12
;;
(p6) fma.s1 f10 = f11, f10, f10
(p6) fma.s1 f11 = f13, f12, f12
;;
(p6) fma.s1 f11 = f13, f11, f11
(p6) fma.s1 f12 = f13, f13, f0
(p6) fma.s1 f10 = f13, f10, f10
(p6) fnma.s1 f12 = f9, f11, f8
;;
(p6) fma.s1 f11 = f12, f11, f11
(p6) fma.s1 f10 = f12, f10, f10
;;
(p6) fnma.s1 f8 = f9, f11, f8
;;
(p6) fma.s1 f10 = f8, f10, f11
(p6) fma.s1 f10 = f12, f10, f11
;;
// Round quotient to an integer.
fcvt.fx.trunc.s1 f8 = f10
fcvt.fx.trunc.s1 f10 = f10
;;
// Transfer result to GP registers.
getf.sig ret0 = f8
getf.sig ret0 = f10
br.ret.sptk rp
;;
.endp __divdi3
@ -176,16 +165,10 @@ __divdi3:
#ifdef L__moddi3
// Compute a 64-bit integer modulus.
//
// Use reciprocal approximation and Newton-Raphson iteration to compute the
// quotient. frcpa gives 8.6 significant bits, so we need 3 iterations
// to get more than the 64 bits of precision that we need for DImode.
// From the Intel IA-64 Optimization Guide, choose the minimum latency
// alternative.
//
// Must use max precision for the reciprocal computations to get 64 bits of
// precision.
//
// r32/f8 holds the dividend. r33/f9 holds the divisor.
// f10 holds the value 2.0. f11 holds the reciprocal approximation.
// f12 is a temporary.
// in0 holds the dividend (a). in1 holds the divisor (b).
.text
.align 16
@ -194,49 +177,40 @@ __divdi3:
__moddi3:
.regstk 2,0,0,0
// Transfer inputs to FP registers.
setf.sig f8 = in0
setf.sig f14 = in0
setf.sig f9 = in1
;;
// Convert the inputs to FP, so that they won't be treated as unsigned.
fcvt.xf f8 = f8
fcvt.xf f8 = f14
fcvt.xf f9 = f9
;;
// Compute the reciprocal approximation.
frcpa.s1 f10, p6 = f8, f9
;;
// 3 Newton-Raphson iterations.
(p6) fma.s1 f11 = farg0, f10, f0
(p6) fnma.s1 f12 = farg1, f10, f1
(p6) fmpy.s1 f12 = f8, f10
(p6) fnma.s1 f11 = f9, f10, f1
;;
(p6) fma.s1 f11 = f12, f11, f11
(p6) fma.s1 f13 = f12, f12, f0
(p6) fma.s1 f10 = f12, f10, f10
(p6) fma.s1 f12 = f11, f12, f12
(p6) fmpy.s1 f13 = f11, f11
;;
(p6) fma.s1 f11 = f13, f11, f11
(p6) fma.s1 f12 = f13, f13, f0
(p6) fma.s1 f10 = f11, f10, f10
(p6) fma.s1 f11 = f13, f12, f12
;;
sub in1 = r0, in1
(p6) fma.s1 f10 = f13, f10, f10
;;
(p6) fma.s1 f11 = f12, f11, f11
(p6) fma.s1 f10 = f12, f10, f10
;;
(p6) fnma.s1 f12 = f9, f11, f8
;;
setf.sig f9 = in1
(p6) fma.s1 f10 = f12, f10, f11
;;
// Round quotient to an integer.
fcvt.fx.trunc.s1 f10 = f10
;;
// Renormalize.
fcvt.xf f10 = f10
;;
// Compute remainder.
fnma.s1 f8 = f10, f9, f8
;;
// Round remainder to an integer.
fcvt.fx.trunc.s1 f8 = f8
// r = q * (-b) + a
xma.l f10 = f10, f9, f14
;;
// Transfer result to GP registers.
getf.sig ret0 = f8
getf.sig ret0 = f10
br.ret.sptk rp
;;
.endp __moddi3
@ -245,16 +219,10 @@ __moddi3:
#ifdef L__udivdi3
// Compute a 64-bit unsigned integer quotient.
//
// Use reciprocal approximation and Newton-Raphson iteration to compute the
// quotient. frcpa gives 8.6 significant bits, so we need 3 iterations
// to get more than the 64 bits of precision that we need for DImode.
// From the Intel IA-64 Optimization Guide, choose the minimum latency
// alternative.
//
// Must use max precision for the reciprocal computations to get 64 bits of
// precision.
//
// r32/f8 holds the dividend. r33/f9 holds the divisor.
// f10 holds the value 2.0. f11 holds the reciprocal approximation.
// f12 is a temporary.
// in0 holds the dividend. in1 holds the divisor.
.text
.align 16
@ -274,29 +242,25 @@ __udivdi3:
frcpa.s1 f10, p6 = f8, f9
;;
// 3 Newton-Raphson iterations.
(p6) fma.s1 f11 = farg0, f10, f0
(p6) fnma.s1 f12 = farg1, f10, f1
(p6) fnma.s1 f11 = f9, f10, f1
(p6) fmpy.s1 f12 = f8, f10
;;
(p6) fma.s1 f11 = f12, f11, f11
(p6) fma.s1 f13 = f12, f12, f0
(p6) fma.s1 f10 = f12, f10, f10
(p6) fmpy.s1 f13 = f11, f11
(p6) fma.s1 f12 = f11, f12, f12
;;
(p6) fma.s1 f10 = f11, f10, f10
(p6) fma.s1 f11 = f13, f12, f12
;;
(p6) fma.s1 f11 = f13, f11, f11
(p6) fma.s1 f12 = f13, f13, f0
(p6) fma.s1 f10 = f13, f10, f10
(p6) fnma.s1 f12 = f9, f11, f8
;;
(p6) fma.s1 f11 = f12, f11, f11
(p6) fma.s1 f10 = f12, f10, f10
;;
(p6) fnma.s1 f8 = f9, f11, f8
;;
(p6) fma.s1 f10 = f8, f10, f11
(p6) fma.s1 f10 = f2, f10, f11
;;
// Round quotient to an unsigned integer.
fcvt.fxu.trunc.s1 f8 = f10
fcvt.fxu.trunc.s1 f10 = f10
;;
// Transfer result to GP registers.
getf.sig ret0 = f8
getf.sig ret0 = f10
br.ret.sptk rp
;;
.endp __udivdi3
@ -305,16 +269,10 @@ __udivdi3:
#ifdef L__umoddi3
// Compute a 64-bit unsigned integer modulus.
//
// Use reciprocal approximation and Newton-Raphson iteration to compute the
// quotient. frcpa gives 8.6 significant bits, so we need 3 iterations
// to get more than the 64 bits of precision that we need for DImode.
// From the Intel IA-64 Optimization Guide, choose the minimum latency
// alternative.
//
// Must use max precision for the reciprocal computations to get 64 bits of
// precision.
//
// r32/f8 holds the dividend. r33/f9 holds the divisor.
// f10 holds the value 2.0. f11 holds the reciprocal approximation.
// f12 is a temporary.
// in0 holds the dividend (a). in1 holds the divisor (b).
.text
.align 16
@ -323,49 +281,41 @@ __udivdi3:
__umoddi3:
.regstk 2,0,0,0
// Transfer inputs to FP registers.
setf.sig f8 = in0
setf.sig f14 = in0
setf.sig f9 = in1
;;
// Convert the inputs to FP, to avoid FP software assist faults.
fcvt.xuf.s1 f8 = f8
fcvt.xuf.s1 f8 = f14
fcvt.xuf.s1 f9 = f9
;;
// Compute the reciprocal approximation.
frcpa.s1 f10, p6 = f8, f9
;;
// 3 Newton-Raphson iterations.
(p6) fma.s1 f11 = farg0, f10, f0
(p6) fnma.s1 f12 = farg1, f10, f1
(p6) fmpy.s1 f12 = f8, f10
(p6) fnma.s1 f11 = f9, f10, f1
;;
(p6) fma.s1 f11 = f12, f11, f11
(p6) fma.s1 f13 = f12, f12, f0
(p6) fma.s1 f10 = f12, f10, f10
(p6) fma.s1 f12 = f11, f12, f12
(p6) fmpy.s1 f13 = f11, f11
;;
(p6) fma.s1 f11 = f13, f11, f11
(p6) fma.s1 f12 = f13, f13, f0
(p6) fma.s1 f10 = f11, f10, f10
(p6) fma.s1 f11 = f13, f12, f12
;;
sub in1 = r0, in1
(p6) fma.s1 f10 = f13, f10, f10
;;
(p6) fma.s1 f11 = f12, f11, f11
(p6) fma.s1 f10 = f12, f10, f10
;;
(p6) fnma.s1 f12 = f9, f11, f8
;;
setf.sig f9 = in1
(p6) fma.s1 f10 = f12, f10, f11
;;
// Round quotient to an unsigned integer.
fcvt.fxu.trunc.s1 f10 = f10
;;
// Renormalize.
fcvt.xuf.s1 f10 = f10
;;
// Compute remainder.
fnma.s1 f8 = f10, f9, f8
;;
// Round remainder to an integer.
fcvt.fxu.trunc.s1 f8 = f8
// r = q * (-b) + a
xma.l f10 = f10, f9, f14
;;
// Transfer result to GP registers.
getf.sig ret0 = f8
getf.sig ret0 = f10
br.ret.sptk rp
;;
.endp __umoddi3
@ -374,21 +324,10 @@ __umoddi3:
#ifdef L__divsi3
// Compute a 32-bit integer quotient.
//
// Use reciprocal approximation and Newton-Raphson iteration to compute the
// quotient. frcpa gives 8.6 significant bits, so we need 2 iterations
// to get more than the 32 bits of precision that we need for SImode.
// From the Intel IA-64 Optimization Guide, choose the minimum latency
// alternative.
//
// ??? This is currently not used. It needs to be fixed to be more like the
// above DImode routines.
//
// ??? Check to see if the error is less than >.5ulp error. We may need
// some adjustment code to get precise enough results.
//
// ??? Should probably use max precision for the reciprocal computations.
//
// r32/f8 holds the dividend. r33/f9 holds the divisor.
// f10 holds the value 2.0. f11 holds the reciprocal approximation.
// f12 is a temporary.
// in0 holds the dividend. in1 holds the divisor.
.text
.align 16
@ -396,28 +335,30 @@ __umoddi3:
.proc __divsi3
__divsi3:
.regstk 2,0,0,0
sxt4 in0 = in0
sxt4 in1 = in1
;;
setf.sig f8 = in0
setf.sig f9 = in1
;;
mov r2 = 0x0ffdd
fcvt.xf f8 = f8
fcvt.xf f9 = f9
;;
frcpa f11, p6 = f8, f9
fadd f10 = f1, f1
setf.exp f11 = r2
frcpa f10, p6 = f8, f9
;;
fnma f12 = f9, f11, f10
(p6) fmpy.s1 f8 = f8, f10
(p6) fnma.s1 f9 = f9, f10, f1
;;
fmpy f11 = f11, f12
(p6) fma.s1 f8 = f9, f8, f8
(p6) fma.s1 f9 = f9, f9, f11
;;
fnma f12 = f9, f11, f10
(p6) fma.s1 f10 = f9, f8, f8
;;
fmpy f11 = f11, f12
fcvt.fx.trunc.s1 f10 = f10
;;
fmpy f8 = f8, f11
;;
fcvt.fx.trunc f8 = f8
;;
getf.sig ret0 = f8
getf.sig ret0 = f10
br.ret.sptk rp
;;
.endp __divsi3
@ -426,21 +367,10 @@ __divsi3:
#ifdef L__modsi3
// Compute a 32-bit integer modulus.
//
// Use reciprocal approximation and Newton-Raphson iteration to compute the
// quotient. frcpa gives 8.6 significant bits, so we need 2 iterations
// to get more than the 32 bits of precision that we need for SImode.
// From the Intel IA-64 Optimization Guide, choose the minimum latency
// alternative.
//
// ??? This is currently not used. It needs to be fixed to be more like the
// above DImode routines.
//
// ??? Check to see if the error is less than >.5ulp error. We may need
// some adjustment code to get precise enough results.
//
// ??? Should probably use max precision for the reciprocal computations.
//
// r32/f8 holds the dividend. r33/f9 holds the divisor.
// f10 holds the value 2.0. f11 holds the reciprocal approximation.
// f12 is a temporary.
// in0 holds the dividend. in1 holds the divisor.
.text
.align 16
@ -448,34 +378,34 @@ __divsi3:
.proc __modsi3
__modsi3:
.regstk 2,0,0,0
setf.sig f8 = r32
mov r2 = 0x0ffdd
sxt4 in0 = in0
sxt4 in1 = in1
;;
setf.sig f13 = r32
setf.sig f9 = r33
;;
fcvt.xf f8 = f8
sub in1 = r0, in1
fcvt.xf f8 = f13
fcvt.xf f9 = f9
;;
frcpa f11, p6 = f8, f9
fadd f10 = f1, f1
setf.exp f11 = r2
frcpa f10, p6 = f8, f9
;;
fnma f12 = f9, f11, f10
(p6) fmpy.s1 f12 = f8, f10
(p6) fnma.s1 f10 = f9, f10, f1
;;
fmpy f11 = f11, f12
setf.sig f9 = in1
(p6) fma.s1 f12 = f10, f12, f12
(p6) fma.s1 f10 = f10, f10, f11
;;
fnma f12 = f9, f11, f10
(p6) fma.s1 f10 = f10, f12, f12
;;
fmpy f11 = f11, f12
fcvt.fx.trunc.s1 f10 = f10
;;
fmpy f10 = f8, f11
xma.l f10 = f10, f9, f13
;;
fcvt.fx.trunc f10 = f10
;;
fcvt.xf f10 = f10
;;
fnma f8 = f10, f9, f8
;;
fcvt.fx f8 = f8
;;
getf.sig r32 = f8
getf.sig ret0 = f10
br.ret.sptk rp
;;
.endp __modsi3
@ -484,24 +414,10 @@ __modsi3:
#ifdef L__udivsi3
// Compute a 32-bit unsigned integer quotient.
//
// Use reciprocal approximation and Newton-Raphson iteration to compute the
// quotient. frcpa gives 8.6 significant bits, so we need 2 iterations
// to get more than the 32 bits of precision that we need for SImode.
// From the Intel IA-64 Optimization Guide, choose the minimum latency
// alternative.
//
// ??? This is currently not used. It needs to be fixed to be more like the
// above DImode routines.
//
// ??? Check to see if the error is less than >.5ulp error. We may need
// some adjustment code to get precise enough results.
//
// ??? Should probably use max precision for the reciprocal computations.
//
// r32/f8 holds the dividend. r33/f9 holds the divisor.
// f10 holds the value 2.0. f11 holds the reciprocal approximation.
// f12 is a temporary.
//
// This is the same as divsi3, except that we don't need fcvt instructions
// before the frcpa.
// in0 holds the dividend. in1 holds the divisor.
.text
.align 16
@ -509,25 +425,27 @@ __modsi3:
.proc __udivsi3
__udivsi3:
.regstk 2,0,0,0
setf.sig f8 = r32
setf.sig f9 = r33
mov r2 = 0x0ffdd
zxt4 in0 = in0
zxt4 in1 = in1
;;
frcpa f11, p6 = f8, f9
fadd f10 = f1, f1
setf.sig f8 = in0
setf.sig f9 = in1
;;
fnma f12 = f9, f11, f10
setf.exp f11 = r2
frcpa f10, p6 = f8, f9
;;
fmpy f11 = f11, f12
(p6) fmpy.s1 f8 = f8, f10
(p6) fnma.s1 f9 = f9, f10, f1
;;
fnma f12 = f9, f11, f10
(p6) fma.s1 f8 = f9, f8, f8
(p6) fma.s1 f9 = f9, f9, f11
;;
fmpy f11 = f11, f12
(p6) fma.s1 f10 = f9, f8, f8
;;
fmpy f8 = f8, f11
fcvt.fxu.trunc.s1 f10 = f10
;;
fcvt.fxu.trunc f8 = f8
;;
getf.sig ret0 = f8
getf.sig ret0 = f10
br.ret.sptk rp
;;
.endp __udivsi3
@ -536,24 +454,10 @@ __udivsi3:
#ifdef L__umodsi3
// Compute a 32-bit unsigned integer modulus.
//
// Use reciprocal approximation and Newton-Raphson iteration to compute the
// quotient. frcpa gives 8.6 significant bits, so we need 2 iterations
// to get more than the 32 bits of precision that we need for SImode.
// From the Intel IA-64 Optimization Guide, choose the minimum latency
// alternative.
//
// ??? This is currently not used. It needs to be fixed to be more like the
// above DImode routines.
//
// ??? Check to see if the error is less than >.5ulp error. We may need
// some adjustment code to get precise enough results.
//
// ??? Should probably use max precision for the reciprocal computations.
//
// r32/f8 holds the dividend. r33/f9 holds the divisor.
// f10 holds the value 2.0. f11 holds the reciprocal approximation.
// f12 is a temporary.
//
// This is the same as modsi3, except that we don't need fcvt instructions
// before the frcpa.
// in0 holds the dividend. in1 holds the divisor.
.text
.align 16
@ -561,31 +465,33 @@ __udivsi3:
.proc __umodsi3
__umodsi3:
.regstk 2,0,0,0
setf.sig f8 = r32
setf.sig f9 = r33
mov r2 = 0x0ffdd
zxt4 in0 = in0
zxt4 in1 = in1
;;
frcpa f11, p6 = f8, f9
fadd f10 = f1, f1
setf.sig f13 = in0
setf.sig f9 = in1
;;
fnma f12 = f9, f11, f10
sub in1 = r0, in1
fcvt.xf f8 = f13
fcvt.xf f9 = f9
;;
fmpy f11 = f11, f12
setf.exp f11 = r2
frcpa f10, p6 = f8, f9
;;
fnma f12 = f9, f11, f10
(p6) fmpy.s1 f12 = f8, f10
(p6) fnma.s1 f10 = f9, f10, f1
;;
fmpy f11 = f11, f12
(p6) fma.s1 f12 = f10, f12, f12
(p6) fma.s1 f10 = f10, f10, f11
;;
fmpy f10 = f8, f11
(p6) fma.s1 f10 = f10, f12, f12
;;
fcvt.fxu.trunc f10 = f10
fcvt.fxu.trunc.s1 f10 = f10
;;
fcvt.xuf f10 = f10
xma.l f10 = f10, f9, f13
;;
fnma f8 = f10, f9, f8
;;
fcvt.fxu f8 = f8
;;
getf.sig r32 = f8
getf.sig ret0 = f10
br.ret.sptk rp
;;
.endp __umodsi3