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authormalc <av1474@comtv.ru>2009-09-06 06:31:09 +0400
committermalc <av1474@comtv.ru>2009-09-06 07:24:37 +0400
commitc45851c44a414e15cd0971c228202f27c127ab78 (patch)
treeec8c679743f132cc7302583c5d9dbd36a075100e /tcg
parentb3d6fb4a6a53d9d16bfe3cafe805e0b41f9ccb8b (diff)
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When targeting PPU use rlwinm instead of andi. if possible
andi. is microcoded and slow there. Signed-off-by: malc <av1474@comtv.ru>
Diffstat (limited to 'tcg')
-rw-r--r--tcg/ppc/tcg-target.c62
1 files changed, 54 insertions, 8 deletions
diff --git a/tcg/ppc/tcg-target.c b/tcg/ppc/tcg-target.c
index 2409288..0739515 100644
--- a/tcg/ppc/tcg-target.c
+++ b/tcg/ppc/tcg-target.c
@@ -1253,14 +1253,60 @@ static void tcg_out_op(TCGContext *s, int opc, const TCGArg *args,
case INDEX_op_and_i32:
if (const_args[2]) {
- if ((args[2] & 0xffff) == args[2])
- tcg_out32 (s, ANDI | RS (args[1]) | RA (args[0]) | args[2]);
- else if ((args[2] & 0xffff0000) == args[2])
- tcg_out32 (s, ANDIS | RS (args[1]) | RA (args[0])
- | ((args[2] >> 16) & 0xffff));
- else {
- tcg_out_movi (s, TCG_TYPE_I32, 0, args[2]);
- tcg_out32 (s, AND | SAB (args[1], args[0], 0));
+ uint32_t c;
+
+ c = args[2];
+
+ if (!c) {
+ tcg_out_movi (s, TCG_TYPE_I32, args[0], 0);
+ break;
+ }
+#ifdef __PPU__
+ uint32_t t, n;
+ int mb, me;
+
+ n = c ^ -(c & 1);
+ t = n + (n & -n);
+
+ if ((t & (t - 1)) == 0) {
+ int lzc, tzc;
+
+ if ((c & 0x80000001) == 0x80000001) {
+ lzc = clz32 (n);
+ tzc = ctz32 (n);
+
+ mb = 32 - tzc;
+ me = lzc - 1;
+ }
+ else {
+ lzc = clz32 (c);
+ tzc = ctz32 (c);
+
+ mb = lzc;
+ me = 31 - tzc;
+ }
+
+ tcg_out32 (s, (RLWINM
+ | RA (args[0])
+ | RS (args[1])
+ | SH (0)
+ | MB (mb)
+ | ME (me)
+ )
+ );
+ }
+ else
+#endif /* !__PPU__ */
+ {
+ if ((c & 0xffff) == c)
+ tcg_out32 (s, ANDI | RS (args[1]) | RA (args[0]) | c);
+ else if ((c & 0xffff0000) == c)
+ tcg_out32 (s, ANDIS | RS (args[1]) | RA (args[0])
+ | ((c >> 16) & 0xffff));
+ else {
+ tcg_out_movi (s, TCG_TYPE_I32, 0, c);
+ tcg_out32 (s, AND | SAB (args[1], args[0], 0));
+ }
}
}
else