From: Segher Boessenkool Date: Sun, 21 Sep 2014 18:01:59 +0000 (+0200) Subject: rs6000.md (strlensi): Don't use subsi3 with a constant, use addsi3 directly. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=9f31288f440e5b75ef5d7759310bfd95362610a7;p=gcc.git rs6000.md (strlensi): Don't use subsi3 with a constant, use addsi3 directly. 2014-09-21 Segher Boessenkool * config/rs6000/rs6000.md (strlensi): Don't use subsi3 with a constant, use addsi3 directly. (three anonymous define_insn, two define_split): Delete. (sub3): Move. Do not allow constant second operand. Generate different insn for constant first operand. (*subf3, *subf3_dot, *subf3_dot2): New. (subf3_imm): New. (ctz2, ffs2): Clobber CA_REGNO where required. (*plus_ltu): Only handle registers. (*plus_ltu_1): New. Handle integer third operand. (*plus_gtu): Only handle registers. (*plus_gtu_1): New. Handle integer third operand. From-SVN: r215434 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index af1ebbc64a0..08e66b7ee5f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,18 @@ +2014-09-21 Segher Boessenkool + + * config/rs6000/rs6000.md (strlensi): Don't use subsi3 with a + constant, use addsi3 directly. + (three anonymous define_insn, two define_split): Delete. + (sub3): Move. Do not allow constant second operand. + Generate different insn for constant first operand. + (*subf3, *subf3_dot, *subf3_dot2): New. + (subf3_imm): New. + (ctz2, ffs2): Clobber CA_REGNO where required. + (*plus_ltu): Only handle registers. + (*plus_ltu_1): New. Handle integer third operand. + (*plus_gtu): Only handle registers. + (*plus_gtu_1): New. Handle integer third operand. + 2014-09-21 Segher Boessenkool * config/rs6000/rs6000.md (iorxor): New code_iterator. diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index b2f5c55534f..dfebf5ab87c 100644 --- a/gcc/config/rs6000/rs6000.md +++ b/gcc/config/rs6000/rs6000.md @@ -1427,7 +1427,7 @@ emit_label (end_label); emit_insn (gen_addsi3 (scratch_string, scratch_string, scratch_dlmzb)); emit_insn (gen_subsi3 (result, scratch_string, addr)); - emit_insn (gen_subsi3 (result, result, const1_rtx)); + emit_insn (gen_addsi3 (result, result, constm1_rtx)); DONE; }) @@ -1644,92 +1644,82 @@ (set_attr "length" "4,8")]) -(define_insn "" - [(set (match_operand:GPR 0 "gpc_reg_operand" "=r,r") - (minus:GPR (match_operand:GPR 1 "reg_or_short_operand" "r,I") - (match_operand:GPR 2 "gpc_reg_operand" "r,r")))] +(define_expand "sub3" + [(set (match_operand:SDI 0 "gpc_reg_operand" "") + (minus:SDI (match_operand:SDI 1 "reg_or_short_operand" "") + (match_operand:SDI 2 "gpc_reg_operand" "")))] "" - "@ - subf %0,%2,%1 - subfic %0,%2,%1" +{ + if (short_cint_operand (operands[1], mode) + && !(mode == DImode && !TARGET_POWERPC64)) + { + emit_insn (gen_subf3_imm (operands[0], operands[2], operands[1])); + DONE; + } +}) + +(define_insn "*subf3" + [(set (match_operand:GPR 0 "gpc_reg_operand" "=r") + (minus:GPR (match_operand:GPR 2 "gpc_reg_operand" "r") + (match_operand:GPR 1 "gpc_reg_operand" "r")))] + "" + "subf %0,%1,%2" [(set_attr "type" "add")]) -(define_insn "" - [(set (match_operand:CC 0 "cc_reg_operand" "=x,?y") - (compare:CC (minus:P (match_operand:P 1 "gpc_reg_operand" "r,r") - (match_operand:P 2 "gpc_reg_operand" "r,r")) +(define_insn_and_split "*subf3_dot" + [(set (match_operand:CC 3 "cc_reg_operand" "=x,?y") + (compare:CC (minus:GPR (match_operand:GPR 2 "gpc_reg_operand" "r,r") + (match_operand:GPR 1 "gpc_reg_operand" "r,r")) (const_int 0))) - (clobber (match_scratch:P 3 "=r,r"))] - "" + (clobber (match_scratch:GPR 0 "=r,r"))] + "mode == Pmode" "@ - subf. %3,%2,%1 + subf. %0,%1,%2 #" + "&& reload_completed && cc_reg_not_cr0_operand (operands[3], CCmode)" + [(set (match_dup 0) + (minus:GPR (match_dup 2) + (match_dup 1))) + (set (match_dup 3) + (compare:CC (match_dup 0) + (const_int 0)))] + "" [(set_attr "type" "add") (set_attr "dot" "yes") (set_attr "length" "4,8")]) -(define_split - [(set (match_operand:CC 0 "cc_reg_not_cr0_operand" "") - (compare:CC (minus:P (match_operand:P 1 "gpc_reg_operand" "") - (match_operand:P 2 "gpc_reg_operand" "")) - (const_int 0))) - (clobber (match_scratch:P 3 ""))] - "reload_completed" - [(set (match_dup 3) - (minus:P (match_dup 1) - (match_dup 2))) - (set (match_dup 0) - (compare:CC (match_dup 3) - (const_int 0)))] - "") - -(define_insn "" +(define_insn_and_split "*subf3_dot2" [(set (match_operand:CC 3 "cc_reg_operand" "=x,?y") - (compare:CC (minus:P (match_operand:P 1 "gpc_reg_operand" "r,r") - (match_operand:P 2 "gpc_reg_operand" "r,r")) + (compare:CC (minus:GPR (match_operand:GPR 2 "gpc_reg_operand" "r,r") + (match_operand:GPR 1 "gpc_reg_operand" "r,r")) (const_int 0))) - (set (match_operand:P 0 "gpc_reg_operand" "=r,r") - (minus:P (match_dup 1) - (match_dup 2)))] - "" + (set (match_operand:GPR 0 "gpc_reg_operand" "=r,r") + (minus:GPR (match_dup 2) + (match_dup 1)))] + "mode == Pmode" "@ - subf. %0,%2,%1 + subf. %0,%1,%2 #" - [(set_attr "type" "add") - (set_attr "dot" "yes") - (set_attr "length" "4,8")]) - -(define_split - [(set (match_operand:CC 3 "cc_reg_not_cr0_operand" "") - (compare:CC (minus:P (match_operand:P 1 "gpc_reg_operand" "") - (match_operand:P 2 "gpc_reg_operand" "")) - (const_int 0))) - (set (match_operand:P 0 "gpc_reg_operand" "") - (minus:P (match_dup 1) - (match_dup 2)))] - "reload_completed" + "&& reload_completed && cc_reg_not_cr0_operand (operands[3], CCmode)" [(set (match_dup 0) - (minus:P (match_dup 1) - (match_dup 2))) + (minus:GPR (match_dup 2) + (match_dup 1))) (set (match_dup 3) (compare:CC (match_dup 0) (const_int 0)))] - "") + "" + [(set_attr "type" "add") + (set_attr "dot" "yes") + (set_attr "length" "4,8")]) -(define_expand "sub3" - [(set (match_operand:SDI 0 "gpc_reg_operand" "") - (minus:SDI (match_operand:SDI 1 "reg_or_short_operand" "") - (match_operand:SDI 2 "reg_or_sub_cint_operand" "")))] +(define_insn "subf3_imm" + [(set (match_operand:GPR 0 "gpc_reg_operand" "=r") + (minus:GPR (match_operand:GPR 2 "short_cint_operand" "I") + (match_operand:GPR 1 "gpc_reg_operand" "r"))) + (clobber (reg:GPR CA_REGNO))] "" - " -{ - if (GET_CODE (operands[2]) == CONST_INT) - { - emit_insn (gen_add3 (operands[0], operands[1], - negate_rtx (mode, operands[2]))); - DONE; - } -}") + "subfic %0,%1,%2" + [(set_attr "type" "add")]) (define_expand "neg2" @@ -1802,9 +1792,10 @@ (match_dup 2))) (set (match_dup 4) (clz:GPR (match_dup 3))) - (set (match_operand:GPR 0 "gpc_reg_operand" "") - (minus:GPR (match_dup 5) - (match_dup 4)))] + (parallel [(set (match_operand:GPR 0 "gpc_reg_operand" "") + (minus:GPR (match_dup 5) + (match_dup 4))) + (clobber (reg:GPR CA_REGNO))])] "" { operands[2] = gen_reg_rtx (mode); @@ -1821,9 +1812,10 @@ (match_dup 2))) (set (match_dup 4) (clz:GPR (match_dup 3))) - (set (match_operand:GPR 0 "gpc_reg_operand" "") - (minus:GPR (match_dup 5) - (match_dup 4)))] + (parallel [(set (match_operand:GPR 0 "gpc_reg_operand" "") + (minus:GPR (match_dup 5) + (match_dup 4))) + (clobber (reg:GPR CA_REGNO))])] "" { operands[2] = gen_reg_rtx (mode); @@ -12582,7 +12574,7 @@ [(set (match_operand:P 0 "gpc_reg_operand" "=&r,r") (plus:P (ltu:P (match_operand:P 1 "gpc_reg_operand" "r,r") (match_operand:P 2 "reg_or_neg_short_operand" "r,P")) - (match_operand:P 3 "reg_or_short_operand" "rI,rI")))] + (match_operand:P 3 "gpc_reg_operand" "r,r")))] "" "#" "&& !reg_overlap_mentioned_p (operands[0], operands[3])" @@ -12590,6 +12582,19 @@ (set (match_dup 0) (minus:P (match_dup 3) (match_dup 0)))] "") +(define_insn_and_split "*plus_ltu_1" + [(set (match_operand:P 0 "gpc_reg_operand" "=&r,r") + (plus:P (ltu:P (match_operand:P 1 "gpc_reg_operand" "r,r") + (match_operand:P 2 "reg_or_neg_short_operand" "r,P")) + (match_operand:P 3 "short_cint_operand" "I,I")))] + "" + "#" + "&& !reg_overlap_mentioned_p (operands[0], operands[3])" + [(set (match_dup 0) (neg:P (ltu:P (match_dup 1) (match_dup 2)))) + (parallel [(set (match_dup 0) (minus:P (match_dup 3) (match_dup 0))) + (clobber (reg:P CA_REGNO))])] + "") + (define_insn_and_split "*plus_ltu_compare" [(set (match_operand:CC 4 "cc_reg_operand" "=x,x,?y,?y") (compare:CC @@ -13014,7 +13019,7 @@ [(set (match_operand:P 0 "gpc_reg_operand" "=&r") (plus:P (gtu:P (match_operand:P 1 "gpc_reg_operand" "r") (match_operand:P 2 "reg_or_short_operand" "rI")) - (match_operand:P 3 "reg_or_short_operand" "rI")))] + (match_operand:P 3 "gpc_reg_operand" "r")))] "" "#" "&& !reg_overlap_mentioned_p (operands[0], operands[3])" @@ -13022,6 +13027,19 @@ (set (match_dup 0) (minus:P (match_dup 3) (match_dup 0)))] "") +(define_insn_and_split "*plus_gtu_1" + [(set (match_operand:P 0 "gpc_reg_operand" "=&r") + (plus:P (gtu:P (match_operand:P 1 "gpc_reg_operand" "r") + (match_operand:P 2 "reg_or_short_operand" "rI")) + (match_operand:P 3 "short_cint_operand" "I")))] + "" + "#" + "&& !reg_overlap_mentioned_p (operands[0], operands[3])" + [(set (match_dup 0) (neg:P (gtu:P (match_dup 1) (match_dup 2)))) + (parallel [(set (match_dup 0) (minus:P (match_dup 3) (match_dup 0))) + (clobber (reg:P CA_REGNO))])] + "") + (define_insn_and_split "*plus_gtu_compare" [(set (match_operand:CC 4 "cc_reg_operand" "=x,x,?y,?y") (compare:CC