From 7930523de8ea4ce820f4a83b2a87b076b5d0ff37 Mon Sep 17 00:00:00 2001 From: Kazu Hirata <kazu@cs.umass.edu> Date: Thu, 12 Dec 2002 22:29:10 +0000 Subject: [PATCH] * config/h8300/h8300.md: Add a new peephole2. From-SVN: r60082 --- gcc/ChangeLog | 4 ++++ gcc/config/h8300/h8300.md | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 37 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3accc82cefa6..bf71fdb15afa 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2002-12-12 Kazu Hirata <kazu@cs.umass.edu> + + * config/h8300/h8300.md: Add a new peephole2. + 2002-12-12 Kazu Hirata <kazu@cs.umass.edu> * config/h8300/h8300.md (a peephole2): Accept a constant diff --git a/gcc/config/h8300/h8300.md b/gcc/config/h8300/h8300.md index ca95f4bbe758..8bc69aa85f68 100644 --- a/gcc/config/h8300/h8300.md +++ b/gcc/config/h8300/h8300.md @@ -2748,3 +2748,36 @@ (plus:SI (match_dup 0) (match_dup 1)))] "") + +;; Turn +;; +;; mov.l er7,er0 +;; add.l #10,er0 (takes 8 bytes) +;; +;; into +;; +;; sub.l er0,er0 +;; add.b #10,r0l +;; add.l er7,er0 (takes 6 bytes) + +(define_peephole2 + [(set (match_operand:SI 0 "register_operand" "") + (match_operand:SI 1 "register_operand" "")) + (set (match_dup 0) + (plus:SI (match_dup 0) + (match_operand:SI 2 "const_int_operand" "")))] + "(TARGET_H8300H || TARGET_H8300S) + && REG_P (operands[0]) && REG_P (operands[1]) + && REGNO (operands[0]) != REGNO (operands[1]) + && !CONST_OK_FOR_L (INTVAL (operands[2])) + && !CONST_OK_FOR_N (INTVAL (operands[2])) + && ((INTVAL (operands[2]) & 0xff) == INTVAL (operands[2]) + || (INTVAL (operands[2]) & 0xff00) == INTVAL (operands[2]) + || INTVAL (operands[2]) == 0xffff + || INTVAL (operands[2]) == 0xfffe)" + [(set (match_dup 0) + (match_dup 2)) + (set (match_dup 0) + (plus:SI (match_dup 0) + (match_dup 1)))] + "")