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codea: super mega opt fuer einen sub spezialfall
author
Bernhard Urban
<lewurm@gmail.com>
Tue, 18 May 2010 00:39:28 +0000
(
02:39
+0200)
committer
Bernhard Urban
<lewurm@gmail.com>
Tue, 18 May 2010 00:39:28 +0000
(
02:39
+0200)
codea/code.bfe
patch
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diff --git
a/codea/code.bfe
b/codea/code.bfe
index 14cde11d6ab5ce0108f0a7807a2d1c5488e69c78..6184569f7b35716cc94dddc8211854275171cfa0 100644
(file)
--- 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
%}
%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(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);
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);