From e81941b70ea127c83c7c5ac1754bb15925fea2b9 Mon Sep 17 00:00:00 2001 From: Uros Bizjak Date: Fri, 6 Jul 2012 12:57:07 +0200 Subject: [PATCH] i386.md (simple lea to add peephole): Also transform RTXes where second PLUS operand matches output. * config/i386/i386.md (simple lea to add peephole): Also transform RTXes where second PLUS operand matches output. From-SVN: r189320 --- gcc/ChangeLog | 5 +++++ gcc/config/i386/i386.md | 19 +++++++++++++++++++ 2 files changed, 24 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 15ee003686d..15053da446b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2012-07-06 Uros Bizjak + + * config/i386/i386.md (simple lea to add peephole): Also transform + RTXes where second PLUS operand matches output. + 2012-07-06 Uros Bizjak * config/i386/i386.c (construct_plt_address): Make static. diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index bdee324797c..b88db5b4ef5 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -17300,6 +17300,14 @@ [(parallel [(set (match_dup 0) (plus:SWI48 (match_dup 0) (match_dup 1))) (clobber (reg:CC FLAGS_REG))])]) +(define_peephole2 + [(set (match_operand:SWI48 0 "register_operand") + (plus:SWI48 (match_operand:SWI48 1 "") + (match_dup 0)))] + "peep2_regno_dead_p (0, FLAGS_REG)" + [(parallel [(set (match_dup 0) (plus:SWI48 (match_dup 0) (match_dup 1))) + (clobber (reg:CC FLAGS_REG))])]) + (define_peephole2 [(set (match_operand:SI 0 "register_operand") (subreg:SI (plus:DI (match_operand:DI 1 "register_operand") @@ -17311,6 +17319,17 @@ (clobber (reg:CC FLAGS_REG))])] "operands[2] = gen_lowpart (SImode, operands[2]);") +(define_peephole2 + [(set (match_operand:SI 0 "register_operand") + (subreg:SI (plus:DI (match_operand:DI 1 "nonmemory_operand") + (match_operand:DI 2 "register_operand")) 0))] + "TARGET_64BIT + && peep2_regno_dead_p (0, FLAGS_REG) + && REGNO (operands[0]) == REGNO (operands[2])" + [(parallel [(set (match_dup 0) (plus:SI (match_dup 0) (match_dup 1))) + (clobber (reg:CC FLAGS_REG))])] + "operands[1] = gen_lowpart (SImode, operands[1]);") + (define_peephole2 [(set (match_operand:SWI48 0 "register_operand") (mult:SWI48 (match_dup 0) -- 2.30.2