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Patch for rs6000 const doubles
- To: egcs at cygnus dot com
- Subject: Patch for rs6000 const doubles
- From: Michael Meissner <meissner at cygnus dot com>
- Date: Thu, 13 Nov 1997 12:07:31 -0500
Jim or Jeff, please apply the following patch to the release branch of
egcs (I've already applied it to the development branch):
Thu Nov 13 11:07:41 1997 Michael Meissner <meissner@cygnus.com>
* rs6000.c (num_insns_constant): Use REAL_VALUE_FROM_CONST_DOUBLE to
pick apart floating point values, instead of using CONST_DOUBLE_LOW
and CONST_DOUBLE_HIGH.
* rs6000.md (define_splits for DF constants): Use the appropriate
REAL_VALUE_* interface to pick apart DF floating point constants in
a machine independent fashion.
*** gcc/config/rs6000/rs6000.c.~1~ Fri Oct 24 14:18:02 1997
--- gcc/config/rs6000/rs6000.c Thu Nov 13 11:05:36 1997
*************** num_insns_constant (op, mode)
*** 673,700 ****
return num_insns_constant_wide ((HOST_WIDE_INT)l);
}
! else if (GET_CODE (op) == CONST_DOUBLE && TARGET_32BIT)
! return (num_insns_constant_wide (CONST_DOUBLE_LOW (op))
! + num_insns_constant_wide (CONST_DOUBLE_HIGH (op)));
!
! else if (GET_CODE (op) == CONST_DOUBLE && TARGET_64BIT)
{
! HOST_WIDE_INT low = CONST_DOUBLE_LOW (op);
! HOST_WIDE_INT high = CONST_DOUBLE_HIGH (op);
!
! if (high == 0 && (low & 0x80000000) == 0)
! return num_insns_constant_wide (low);
! else if (((high & 0xffffffff) == 0xffffffff)
! && ((low & 0x80000000) != 0))
! return num_insns_constant_wide (low);
! else if (low == 0)
! return num_insns_constant_wide (high) + 1;
else
! return (num_insns_constant_wide (high)
! + num_insns_constant_wide (low) + 1);
}
else
--- 673,719 ----
return num_insns_constant_wide ((HOST_WIDE_INT)l);
}
! else if (GET_CODE (op) == CONST_DOUBLE)
{
! HOST_WIDE_INT low;
! HOST_WIDE_INT high;
! long l[2];
! REAL_VALUE_TYPE rv;
! int endian = (WORDS_BIG_ENDIAN == 0);
! if (mode == VOIDmode || mode == DImode)
! {
! high = CONST_DOUBLE_HIGH (op);
! low = CONST_DOUBLE_LOW (op);
! }
! else
! {
! REAL_VALUE_FROM_CONST_DOUBLE (rv, op);
! REAL_VALUE_TO_TARGET_DOUBLE (rv, l);
! high = l[endian];
! low = l[1 - endian];
! }
! if (TARGET_32BIT)
! return (num_insns_constant_wide (low)
! + num_insns_constant_wide (high));
else
! {
! if (high == 0 && (low & 0x80000000) == 0)
! return num_insns_constant_wide (low);
!
! else if (((high & 0xffffffff) == 0xffffffff)
! && ((low & 0x80000000) != 0))
! return num_insns_constant_wide (low);
!
! else if (low == 0)
! return num_insns_constant_wide (high) + 1;
!
! else
! return (num_insns_constant_wide (high)
! + num_insns_constant_wide (low) + 1);
! }
}
else
*** gcc/config/rs6000/rs6000.md.~1~ Mon Oct 27 11:56:16 1997
--- gcc/config/rs6000/rs6000.md Thu Nov 13 10:39:59 1997
***************
*** 5734,5749 ****
"
{
int endian = (WORDS_BIG_ENDIAN == 0);
operands[2] = operand_subword (operands[0], endian, 0, DFmode);
operands[3] = operand_subword (operands[0], 1 - endian, 0, DFmode);
!
! #ifdef HOST_WORDS_BIG_ENDIAN
! operands[4] = GEN_INT (CONST_DOUBLE_LOW (operands[1]));
! operands[5] = GEN_INT (CONST_DOUBLE_HIGH (operands[1]));
! #else
! operands[4] = GEN_INT (CONST_DOUBLE_HIGH (operands[1]));
! operands[5] = GEN_INT (CONST_DOUBLE_LOW (operands[1]));
! #endif
}")
(define_split
--- 5734,5749 ----
"
{
int endian = (WORDS_BIG_ENDIAN == 0);
+ long l[2];
+ REAL_VALUE_TYPE rv;
+
+ REAL_VALUE_FROM_CONST_DOUBLE (rv, operands[1]);
+ REAL_VALUE_TO_TARGET_DOUBLE (rv, l);
+
operands[2] = operand_subword (operands[0], endian, 0, DFmode);
operands[3] = operand_subword (operands[0], 1 - endian, 0, DFmode);
! operands[4] = GEN_INT (l[endian]);
! operands[5] = GEN_INT (l[1 - endian]);
}")
(define_split
***************
*** 5762,5777 ****
HOST_WIDE_INT high;
HOST_WIDE_INT low;
int endian = (WORDS_BIG_ENDIAN == 0);
rtx high_reg = operand_subword (operands[0], endian, 0, DFmode);
rtx low_reg = operand_subword (operands[0], 1 - endian, 0, DFmode);
! #ifdef HOST_WORDS_BIG_ENDIAN
! high = CONST_DOUBLE_LOW (operands[1]);
! low = CONST_DOUBLE_HIGH (operands[1]);
! #else
! high = CONST_DOUBLE_HIGH (operands[1]);
! low = CONST_DOUBLE_LOW (operands[1]);
! #endif
if (((unsigned HOST_WIDE_INT) (low + 0x8000) < 0x10000)
|| (low & 0xffff) == 0)
--- 5762,5776 ----
HOST_WIDE_INT high;
HOST_WIDE_INT low;
int endian = (WORDS_BIG_ENDIAN == 0);
+ long l[2];
+ REAL_VALUE_TYPE rv;
rtx high_reg = operand_subword (operands[0], endian, 0, DFmode);
rtx low_reg = operand_subword (operands[0], 1 - endian, 0, DFmode);
! REAL_VALUE_FROM_CONST_DOUBLE (rv, operands[1]);
! REAL_VALUE_TO_TARGET_DOUBLE (rv, l);
! high = l[endian];
! low = l[1 - endian];
if (((unsigned HOST_WIDE_INT) (low + 0x8000) < 0x10000)
|| (low & 0xffff) == 0)
***************
*** 5806,5814 ****
(set (match_dup 3) (ior:SI (match_dup 3) (match_dup 7)))]
"
{
! HOST_WIDE_INT high = CONST_DOUBLE_HIGH (operands[1]);
! HOST_WIDE_INT low = CONST_DOUBLE_LOW (operands[1]);
int endian = (WORDS_BIG_ENDIAN == 0);
operands[2] = operand_subword (operands[0], endian, 0, DFmode);
operands[3] = operand_subword (operands[0], 1 - endian, 0, DFmode);
--- 5805,5820 ----
(set (match_dup 3) (ior:SI (match_dup 3) (match_dup 7)))]
"
{
! HOST_WIDE_INT high;
! HOST_WIDE_INT low;
! long l[2];
! REAL_VALUE_TYPE rv;
int endian = (WORDS_BIG_ENDIAN == 0);
+
+ REAL_VALUE_FROM_CONST_DOUBLE (rv, operands[1]);
+ REAL_VALUE_TO_TARGET_DOUBLE (rv, l);
+ high = l[endian];
+ low = l[1 - endian];
operands[2] = operand_subword (operands[0], endian, 0, DFmode);
operands[3] = operand_subword (operands[0], 1 - endian, 0, DFmode);