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Commit 5d7c2819 by Ian Dall Committed by Richard Henderson
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invoke.texi (NS32K Options): Document -mieee-compare option 

        * doc/invoke.texi (NS32K Options): Document -mieee-compare option

        * config/ns32k/ns32k.md (addsi3, *frame_addr, *stack_addr): merge
        into addsi3 using register class "x" and "y".

        * config/ns32k/ns32k.md (*madddf, *maddsf, *msubdf, *msubsf):
        "earlyclobber" constraint modifier for some alternative.

        * config/ns32k/ns32k.md (tstdf, tstsf, cmpdf, cmpsf, blt, ble)
        (*ble, *blt): Flag to indicate bCOND and sCOND should check for
        unordered.
        config/ns32k/ns32k.h (CC_UNORD): define corresponding mask.

        * config/ns32k/ns32k.h (TARGET_IEEE_COMPARE, MASK_IEEE_COMPARE)
        (TARGET_SWITCHES): Add -mieee-compare option.
        (OVERRIDE_OPTIONS): 32332 is a subset of
        32532. Don't use IEEE_COMPARE -funsafe-math-optimizations.
        (TARGET_SWITCHES): Fix description of bitfield option.
        * config/ns32k/netbsd.h (TARGET_DEFAULT): Add
        -mieee-compare option. Remove 32332 flag.

From-SVN: r55489
parent 5da4f548
Showing with 123 additions and 44 deletions
gcc/ChangeLog
2002-07-16 Ian Dall <ian@sibyl.beware.dropbear.id.au>
* doc/invoke.texi (NS32K Options): Document -mieee-compare option
* config/ns32k/ns32k.md (addsi3, *frame_addr, *stack_addr): merge
into addsi3 using register class "x" and "y".
* config/ns32k/ns32k.md (*madddf, *maddsf, *msubdf, *msubsf):
"earlyclobber" constraint modifier for some alternative.
* config/ns32k/ns32k.md (tstdf, tstsf, cmpdf, cmpsf, blt, ble)
(*ble, *blt): Flag to indicate bCOND and sCOND should check for
unordered.
config/ns32k/ns32k.h (CC_UNORD): define corresponding mask.
* config/ns32k/ns32k.h (TARGET_IEEE_COMPARE, MASK_IEEE_COMPARE)
(TARGET_SWITCHES): Add -mieee-compare option.
(OVERRIDE_OPTIONS): 32332 is a subset of
32532. Don't use IEEE_COMPARE -funsafe-math-optimizations.
(TARGET_SWITCHES): Fix description of bitfield option.
* config/ns32k/netbsd.h (TARGET_DEFAULT): Add
-mieee-compare option. Remove 32332 flag.
2002-07-16 Steve Ellcey <sje@cup.hp.com>
* gcc/explow.c (convert_memory_address): Remove special handling
* explow.c (convert_memory_address): Remove special handling
when POINTERS_EXTEND_UNSIGNED < 0.
* gcc/config/ia64.md (movsi_symbolic): New instruction for ILP32
mode.
* config/ia64.md (movsi_symbolic): New instruction for ILP32 mode.
(movedi_symbolic): Fix typo.
(load_fptr): Remove mode restriction so it works for SI and DI.
(load_fptr_internal1): Ditto.
(load_gprel): Ditto.
(load_symptr_internal1): Ditto.
(call_pic): Ditto.
* gcc/config/ia64.c (call_operand): Modify mode check.
* config/ia64.c (call_operand): Modify mode check.
(ia64_expand_load_address): Handle DI and SI addresses and symbols.
(ia64_expand_move): Ditto.
(ia64_assemble_integer): Handle SImode function pointers.
......
gcc/config/ns32k/netbsd.h
......@@ -34,9 +34,10 @@ Boston, MA 02111-1307, USA. */
FPU is 32381;
Use multiply-add instructions */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT \
(MASK_32532|MASK_32332 | MASK_NO_SB | MASK_NO_BITFIELD | \
MASK_32081|MASK_32381 | MASK_MULT_ADD)
(MASK_32532 | MASK_NO_SB | MASK_NO_BITFIELD | \
MASK_32381 | MASK_IEEE_COMPARE | MASK_MULT_ADD)
/* 32-bit alignment for efficiency */
......
gcc/config/ns32k/ns32k.h
......@@ -82,6 +82,7 @@ Boston, MA 02111-1307, USA. */
extern int target_flags;
/* Masks for target_flags */
#define MASK_32081 1
#define MASK_RTD 2
#define MASK_REGPARM 4
......@@ -93,6 +94,7 @@ extern int target_flags;
#define MASK_32381 256
#define MASK_MULT_ADD 512
#define MASK_SRC 1024
#define MASK_IEEE_COMPARE 2048
/* Macros used in the machine description to test the flags. */
......@@ -121,17 +123,19 @@ extern int target_flags;
/* Ok to use the static base register (and presume it's 0) */
#define TARGET_SB ((target_flags & MASK_NO_SB) == 0)
#define TARGET_HIMEM (target_flags & MASK_HIMEM)
/* Compile using bitfield insns. */
#define TARGET_BITFIELD ((target_flags & MASK_NO_BITFIELD) == 0)
#define TARGET_IEEE_FP (target_flags & MASK_IEEE_COMPARE)
/* Macro to define tables used to set the flags.
This is a list in braces of pairs in braces,
each pair being { "NAME", VALUE }
where VALUE is the bits to set or minus the bits to clear.
An empty string NAME is used to identify the default VALUE. */
#define TARGET_SWITCHES \
{ { "32081", MASK_32081, N_("Use hardware fp")}, \
{ "soft-float", -(MASK_32081|MASK_32381), \
......@@ -148,17 +152,21 @@ extern int target_flags;
N_("Register sb is zero. Use for absolute addressing")}, \
{ "nosb", MASK_NO_SB, N_("Do not use register sb")}, \
{ "bitfield", -MASK_NO_BITFIELD, \
N_("Use bit-field instructions")}, \
{ "nobitfield", MASK_NO_BITFIELD, \
N_("Do not use bit-field instructions")}, \
{ "nobitfield", MASK_NO_BITFIELD, N_("Use bit-field instructions")},\
{ "himem", MASK_HIMEM, N_("Generate code for high memory")}, \
{ "nohimem", -MASK_HIMEM, N_("Generate code for low memory")}, \
{ "32381", MASK_32381, N_("32381 fpu")}, \
{ "mult-add", MASK_MULT_ADD, \
N_("Use multiply-accumulate fp instructions")}, \
{ "nomult-add", -MASK_MULT_ADD, \
N_("Do not use multiply-accumulate fp instructions") }, \
N_("Do not use multiply-accumulate fp instructions") }, \
{ "src", MASK_SRC, N_("\"Small register classes\" kludge")}, \
{ "nosrc", -MASK_SRC, N_("No \"Small register classes\" kludge")}, \
{ "ieee-compare", MASK_IEEE_COMPARE, N_("Use IEEE math for fp comparisons")}, \
{ "noieee-compare", -MASK_IEEE_COMPARE, \
N_("Do not use IEEE math for fp comparisons")}, \
{ "", TARGET_DEFAULT, 0}}
/* TARGET_DEFAULT is defined in encore.h, pc532.h, etc. */
......@@ -166,14 +174,18 @@ extern int target_flags;
/* When we are generating PIC, the sb is used as a pointer
to the GOT. 32381 is a superset of 32081 */
#define OVERRIDE_OPTIONS \
{ \
if (flag_pic || TARGET_HIMEM) \
target_flags |= MASK_NO_SB; \
if (TARGET_32381) \
target_flags |= MASK_32081; \
else \
target_flags &= ~MASK_MULT_ADD; \
#define OVERRIDE_OPTIONS \
{ \
if (target_flags & MASK_32532) \
target_flags |= MASK_32332; \
if (flag_pic || TARGET_HIMEM) \
target_flags |= MASK_NO_SB; \
if (TARGET_32381) \
target_flags |= MASK_32081; \
else \
target_flags &= ~MASK_MULT_ADD; \
if (flag_unsafe_math_optimizations) \
target_flags &= ~MASK_IEEE_COMPARE; \
}
/* Zero or more C statements that may conditionally modify two
......@@ -1180,6 +1192,10 @@ __transfer_from_trampoline () \
is complemented in the F bit. */
#define CC_Z_IN_NOT_F 010000
/* This bit means that the L bit indicates unordered (IEEE) comparison.
*/
#define CC_UNORD 020000
/* Store in cc_status the expressions
that the condition codes will describe
after execution of an instruction whose pattern is EXP.
......
gcc/config/ns32k/ns32k.md
......@@ -94,6 +94,8 @@
"TARGET_32081"
"*
{ cc_status.flags |= CC_REVERSED;
if (TARGET_IEEE_COMPARE)
cc_status.flags |= CC_UNORD;
operands[1] = CONST0_RTX (DFmode);
return \"cmpl %1,%0\"; }")
......@@ -103,6 +105,8 @@
"TARGET_32081"
"*
{ cc_status.flags |= CC_REVERSED;
if (TARGET_IEEE_COMPARE)
cc_status.flags |= CC_UNORD;
operands[1] = CONST0_RTX (SFmode);
return \"cmpf %1,%0\"; }")
......@@ -202,14 +206,22 @@
(compare (match_operand:DF 0 "general_operand" "lmF")
(match_operand:DF 1 "general_operand" "lmF")))]
"TARGET_32081"
"cmpl %0,%1")
"*
{
if (TARGET_IEEE_COMPARE)
cc_status.flags |= CC_UNORD;
return \"cmpl %0,%1\";}")
(define_insn "cmpsf"
[(set (cc0)
(compare (match_operand:SF 0 "general_operand" "fmF")
(match_operand:SF 1 "general_operand" "fmF")))]
"TARGET_32081"
"cmpf %0,%1")
"*
{
if (TARGET_IEEE_COMPARE)
cc_status.flags |= CC_UNORD;
return \"cmpf %0,%1\";}")
;; movdf and movsf copy between general and floating registers using
;; the stack. In principle, we could get better code not allowing
......@@ -798,7 +810,7 @@
;; Multiply-add instructions
(define_insn "*madddf"
[(set (match_operand:DF 0 "nonimmediate_operand" "=v,v,lm")
[(set (match_operand:DF 0 "nonimmediate_operand" "=v,v,&lm")
(plus:DF (mult:DF (match_operand:DF 1 "general_operand" "%lmF,0,0")
(match_operand:DF 2 "general_operand" "lmF,lmF,lmF"))
(match_operand:DF 3 "general_operand" "0,lmF,lmF")))]
......@@ -809,7 +821,7 @@
mull %2,%0\;addl %3,%0")
(define_insn "*maddsf"
[(set (match_operand:SF 0 "nonimmediate_operand" "=u,u,fm")
[(set (match_operand:SF 0 "nonimmediate_operand" "=u,u,&fm")
(plus:SF (mult:SF (match_operand:SF 1 "general_operand" "%fmF,0,0")
(match_operand:SF 2 "general_operand" "fmF,fmF,fmF"))
(match_operand:SF 3 "general_operand" "0,fmF,fmF")))]
......@@ -822,7 +834,7 @@
;; Multiply-sub instructions
(define_insn "*msubdf"
[(set (match_operand:DF 0 "nonimmediate_operand" "=v,lm")
[(set (match_operand:DF 0 "nonimmediate_operand" "=&v,&lm")
(minus:DF (mult:DF (match_operand:DF 1 "general_operand" "%lmF,0")
(match_operand:DF 2 "general_operand" "lmF,lmF"))
(match_operand:DF 3 "general_operand" "lmF,lmF")))]
......@@ -832,7 +844,7 @@
mull %2,%0\;subl %3,%0")
(define_insn "*msubsf"
[(set (match_operand:SF 0 "nonimmediate_operand" "=u,fm")
[(set (match_operand:SF 0 "nonimmediate_operand" "=&u,&fm")
(minus:SF (mult:SF (match_operand:SF 1 "general_operand" "%fmF,0")
(match_operand:SF 2 "general_operand" "fmF,fmF"))
(match_operand:SF 3 "general_operand" "fmF,fmF")))]
......@@ -883,20 +895,6 @@
return \"adjspd %n0\";
}")
(define_insn "*frame_addr"
[(set (match_operand:SI 0 "nonimmediate_operand" "=rm<")
(plus:SI (reg:SI 24)
(match_operand:SI 1 "immediate_operand" "i")))]
"GET_CODE (operands[1]) == CONST_INT"
"addr %c1(fp),%0")
(define_insn "*stack_addr"
[(set (match_operand:SI 0 "nonimmediate_operand" "=rm<")
(plus:SI (reg:SI 25)
(match_operand:SI 1 "immediate_operand" "i")))]
"GET_CODE (operands[1]) == CONST_INT"
"addr %c1(sp),%0")
(define_insn "adddi3"
[(set (match_operand:DI 0 "nonimmediate_operand" "=ro")
(plus:DI (match_operand:DI 1 "general_operand" "%0")
......@@ -940,9 +938,9 @@
;; See Note 1
(define_insn "addsi3"
[(set (match_operand:SI 0 "nonimmediate_operand" "=rm,=rm&<")
(plus:SI (match_operand:SI 1 "general_operand" "%0,r")
(match_operand:SI 2 "general_operand" "g,i")))]
[(set (match_operand:SI 0 "nonimmediate_operand" "=rm,=rm<,=rm<")
(plus:SI (match_operand:SI 1 "general_operand" "%0,r,xy")
(match_operand:SI 2 "general_operand" "g,i,i")))]
""
"*
{
......@@ -964,6 +962,14 @@
return \"addr %c2(%1),%0\";
}
}
else if (which_alternative == 2)
{
if (GET_CODE (operands[2]) == CONST_INT &&
NS32K_DISPLACEMENT_P (INTVAL (operands[2])))
return \"addr %c2(%1),%0\";
else
return \"sprd %1,%0\;addd %2,%0\";
}
else if (GET_CODE (operands[2]) == CONST_INT)
{
int i = INTVAL (operands[2]);
......@@ -2313,7 +2319,13 @@
(label_ref (match_operand 0 "" ""))
(pc)))]
""
"blt %l0")
"*
{
if (cc_prev_status.flags & CC_UNORD)
return \"bhi 0f\;blt %l0\;0:\";
else
return \"blt %l0\";
}")
(define_insn "bltu"
[(set (pc)
......@@ -2349,7 +2361,13 @@
(label_ref (match_operand 0 "" ""))
(pc)))]
""
"ble %l0")
"*
{
if (cc_prev_status.flags & CC_UNORD)
return \"bhi 0f\;ble %l0\;0:\";
else
return \"ble %l0\";
}")
(define_insn "bleu"
[(set (pc)
......@@ -2399,7 +2417,13 @@
(pc)
(label_ref (match_operand 0 "" ""))))]
""
"ble %l0")
"*
{
if (cc_prev_status.flags & CC_UNORD)
return \"bhi 0f\;ble %l0\;0:\";
else
return \"ble %l0\";
}")
(define_insn "*bleu"
[(set (pc)
......@@ -2435,7 +2459,13 @@
(pc)
(label_ref (match_operand 0 "" ""))))]
""
"blt %l0")
"*
{
if (cc_prev_status.flags & CC_UNORD)
return \"bhi 0f\;blt %l0\;0:\";
else
return \"blt %l0\";
}")
(define_insn "*bltu"
[(set (pc)
......
gcc/doc/invoke.texi
......@@ -8698,6 +8698,15 @@ Do not try and generate multiply-add floating point instructions
Generate output containing library calls for floating point.
@strong{Warning:} the requisite libraries may not be available.
@item -mieee-compare
@itemx -mno-ieee-compare
@opindex mieee-compare
@opindex mno-ieee-compare
Control whether or not the compiler uses IEEE floating point
comparisons. These handle correctly the case where the result of a
comparison is unordered.
@strong{Warning:} the requisite kernel support may not be available.
@item -mnobitfield
@opindex mnobitfield
Do not use the bit-field instructions. On some machines it is faster to
......
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