From 5735da426cf539999c2cced8a81abb007f90657e Mon Sep 17 00:00:00 2001 From: law Date: Thu, 29 Oct 1998 00:38:31 +0000 Subject: [PATCH] * i386.md: Change ix86_cpu == PROCESSOR_PENTIUM to TARGET_PENTIUM (zero_extendsidi2): Use # in output template and handle completely by splits. (zero_extend splitters): New define_splits. (ashiftrt_32): New pattern. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@23418 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog | 9 ++++++++ gcc/config/i386/i386.md | 56 ++++++++++++++++++++++++------------------------- 2 files changed, 37 insertions(+), 28 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 4df732b0685..5152d5c6b69 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,12 @@ +Thu Oct 29 01:33:54 1998 Jan Hubicka + Jeffrey A Law (law@cygnus.com) + + * i386.md: Change ix86_cpu == PROCESSOR_PENTIUM to TARGET_PENTIUM + (zero_extendsidi2): Use # in output template and handle completely by + splits. + (zero_extend splitters): New define_splits. + (ashiftrt_32): New pattern. + Wed Oct 28 22:58:35 1998 Jason Merrill * tree.c (append_random_chars): New fn. diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index eea2b34c2e1..7f381a17fc9 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -1252,7 +1252,7 @@ It is at least as fast as xor on any processor except a Pentium. */ if (operands[1] == const1_rtx - && ix86_cpu == PROCESSOR_PENTIUM + && TARGET_PENTIUM && (link = find_reg_note (insn, REG_WAS_0, 0)) /* Make sure the insn that stored the 0 is still present. */ && ! INSN_DELETED_P (XEXP (link, 0)) @@ -1313,7 +1313,7 @@ /* movb $0,reg8 is 2 bytes, the same as xorl reg8,reg8. */ if (operands[1] == const1_rtx - && ix86_cpu == PROCESSOR_PENTIUM + && TARGET_PENTIUM && ! NON_QI_REG_P (operands[0]) && (link = find_reg_note (insn, REG_WAS_0, 0)) /* Make sure the insn that stored the 0 is still present. */ @@ -2022,34 +2022,25 @@ "operands[2] = gen_rtx_REG (SImode, true_regnum (operands[1]));") (define_insn "zero_extendsidi2" - [(set (match_operand:DI 0 "nonimmediate_operand" "=r,?r,?m") - (zero_extend:DI (match_operand:SI 1 "register_operand" "0,rm,r")))] + [(set (match_operand:DI 0 "nonimmediate_operand" "=r,?r,?*o") + (zero_extend:DI (match_operand:SI 1 "general_operand" "0,rm,r")))] "" - "* - { - rtx high[2], low[2], xops[4]; - - if (REG_P (operands[0]) && REG_P (operands[1]) - && REGNO (operands[0]) == REGNO (operands[1])) - { - operands[0] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1); - return AS2 (xor%L0,%0,%0); - } - - split_di (operands, 1, low, high); - xops[0] = low[0]; - xops[1] = operands[1]; - xops[2] = high[0]; - xops[3] = const0_rtx; - - output_asm_insn (AS2 (mov%L0,%1,%0), xops); - if (GET_CODE (low[0]) == MEM) - output_asm_insn (AS2 (mov%L2,%3,%2), xops); - else - output_asm_insn (AS2 (xor%L2,%2,%2), xops); + "#") - RET; -}") +(define_split + [(set (match_operand:DI 0 "register_operand" "") + (zero_extend:DI (match_operand:SI 1 "register_operand" "")))] + "reload_completed && true_regnum (operands[0]) == true_regnum (operands[1])" + [(set (match_dup 4) (const_int 0))] + "split_di (&operands[0], 1, &operands[3], &operands[4]);") + +(define_split + [(set (match_operand:DI 0 "nonimmediate_operand" "") + (zero_extend:DI (match_operand:SI 1 "general_operand" "")))] + "reload_completed" + [(set (match_dup 3) (match_dup 1)) + (set (match_dup 4) (const_int 0))] + "split_di (&operands[0], 1, &operands[3], &operands[4]);") ;;- sign extension instructions @@ -4851,6 +4842,15 @@ byte_xor_operation: RET; }") +(define_insn "ashrsi3_31" + [(set (match_operand:SI 0 "nonimmediate_operand" "=rm,d") + (ashiftrt:SI (match_operand:SI 1 "nonimmediate_operand" "0,a") + (const_int 31)))] + "!TARGET_PENTIUM || optimize_size" + "@ + sar%L0 $31,%0 + cltd") + (define_insn "ashrsi3" [(set (match_operand:SI 0 "nonimmediate_operand" "=rm") (ashiftrt:SI (match_operand:SI 1 "nonimmediate_operand" "0") -- 2.11.4.GIT