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i386.md (QImode add pattern): Support lea instruction.

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* i386.md (QImode add pattern): Support lea instruction.
        (HImode add pattern): Likewise.

Co-Authored-By: Jeffrey A Law <law@cygnus.com>

From-SVN: r26468
This commit is contained in:
Jan Hubicka 1999-04-15 03:38:29 +02:00 committed by Jeff Law
parent 6ec6d558ed
commit 7c802a406f
2 changed files with 46 additions and 6 deletions
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3
gcc/ChangeLog
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@ -1,6 +1,9 @@
Thu Apr 15 01:03:21 1999 Jan Hubicka <hubicka@freesoft.cz>
Jeff Law <law@cygnus.com>
* i386.md (QImode add pattern): Support lea instruction.
(HImode add pattern): Likewise.
* i386.md (ashlsi patterns): Call output_ashl instead of output_ashlsi3.
(ashlqi): Use expander, separate LEA and SAL / ADD patterns; call
output_ashl.

49
gcc/config/i386/i386.md
View File

@ -3421,12 +3421,30 @@
"IX86_EXPAND_BINARY_OPERATOR (PLUS, HImode, operands);")
(define_insn ""
[(set (match_operand:HI 0 "nonimmediate_operand" "=rm,r")
(plus:HI (match_operand:HI 1 "nonimmediate_operand" "%0,0")
(match_operand:HI 2 "general_operand" "ri,rm")))]
[(set (match_operand:HI 0 "nonimmediate_operand" "=rm,r,?r")
(plus:HI (match_operand:HI 1 "nonimmediate_operand" "%0,0,r")
(match_operand:HI 2 "general_operand" "ri,rm,ri")))]
"ix86_binary_operator_ok (PLUS, HImode, operands)"
"*
{
if (REG_P (operands[0]) && REG_P (operands[1])
&& (REG_P (operands[2]) || CONSTANT_P (operands[2]))
&& REGNO (operands[0]) != REGNO (operands[1]))
{
if (operands[2] == stack_pointer_rtx)
abort ();
CC_STATUS_INIT;
operands[1]
= gen_rtx_PLUS (SImode,
gen_rtx_REG (SImode, REGNO (operands[1])),
(! REG_P (operands[2])
? operands[2]
: gen_rtx_REG (SImode, REGNO (operands[2]))));
operands[0] = gen_rtx_REG (SImode, REGNO (operands[0]));
return AS2 (lea%L0,%a1,%0);
}
/* ??? what about offsettable memory references? */
if (!TARGET_PENTIUMPRO /* partial stalls are just too painful to risk. */
&& QI_REG_P (operands[0])
@ -3488,12 +3506,31 @@
"IX86_EXPAND_BINARY_OPERATOR (PLUS, QImode, operands);")
(define_insn ""
[(set (match_operand:QI 0 "nonimmediate_operand" "=qm,q")
(plus:QI (match_operand:QI 1 "nonimmediate_operand" "%0,0")
(match_operand:QI 2 "general_operand" "qn,qmn")))]
[(set (match_operand:QI 0 "nonimmediate_operand" "=qm,q,?q")
(plus:QI (match_operand:QI 1 "nonimmediate_operand" "%0,0,q")
(match_operand:QI 2 "general_operand" "qn,qmn,qn")))]
"ix86_binary_operator_ok (PLUS, QImode, operands)"
"*
{
if (REG_P (operands[0]) && REG_P (operands[1])
&& (REG_P (operands[2]) || CONSTANT_P (operands[2]))
&& (REGNO (operands[0]) != REGNO (operands[1])
|| NON_QI_REG_P (operands[1])
|| (REG_P (operands[2]) && NON_QI_REG_P (operands[2]))))
{
if (operands[2] == stack_pointer_rtx)
abort ();
CC_STATUS_INIT;
operands[1]
= gen_rtx_PLUS (SImode,
gen_rtx_REG (SImode, REGNO (operands[1])),
(! REG_P (operands[2])
? operands[2]
: gen_rtx_REG (SImode, REGNO (operands[2]))));
operands[0] = gen_rtx_REG (SImode, REGNO (operands[0]));
return AS2 (lea%L0,%a1,%0);
}
if (operands[2] == const1_rtx)
return AS1 (inc%B0,%0);