From a22dd19b88fd2fd2b377c005abd1cad02a24ca60 Mon Sep 17 00:00:00 2001 From: Bernhard Urban Date: Tue, 18 May 2010 02:39:28 +0200 Subject: [PATCH] codea: super mega opt fuer einen sub spezialfall --- codea/code.bfe | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/codea/code.bfe b/codea/code.bfe index 14cde11..6184569 100644 --- a/codea/code.bfe +++ b/codea/code.bfe @@ -149,6 +149,16 @@ void gen_lea(struct treenode *bnode, short e) } } +void gen_subspecial(struct treenode *bnode) +{ + /* tritt z.b. bei snafu_05.0 auf */ + printf("\t//gen_subspecial\n"); + KIDREG2ID(0); + KIDKIDREG2PARM(1,0); + printf("\tsubq %%%s, %%%s\n", KIDKID_REG(1,0), BN_REG); + printf("\taddq %%%s, %%%s\n", KIDKID_REG(1,1), BN_REG); +} + %} %start begin @@ -171,6 +181,8 @@ expr: O_SUB(expr,imm) # 2 # gen_e_imm(bnode, "subq"); expr: O_SUB(imm,expr) # 2 # gen_imm_eno(bnode, "subq"); expr: O_SUB(imm,O_FIELD(expr)) # 2 # gen_imm_field(bnode); +expr: O_SUB(expr,O_SUB(O_ID,expr)) # 2 # gen_subspecial(bnode); + expr: O_SUB(expr,O_MUL(O_MONE,expr)) # 1 # gen_lea(bnode,0); expr: O_SUB(expr,O_MUL(O_MTWO,expr)) # 1 # gen_lea(bnode,0); expr: O_SUB(expr,O_MUL(O_MFOUR,expr)) # 1 # gen_lea(bnode,0); -- 2.25.1