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Some nice peephole patterns. Based on patch by Brian Lucas!
author
Anton Korobeynikov
<asl@math.spbu.ru>
Sun, 8 Nov 2009 15:32:28 +0000
(15:32 +0000)
committer
Anton Korobeynikov
<asl@math.spbu.ru>
Sun, 8 Nov 2009 15:32:28 +0000
(15:32 +0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86469
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/Target/MSP430/MSP430InstrInfo.td
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diff --git
a/lib/Target/MSP430/MSP430InstrInfo.td
b/lib/Target/MSP430/MSP430InstrInfo.td
index 8f3e8b05f6f5f33e50ae6be3610ec5c4b6ed431d..2365c594b446bec012f9dac4ec19f4db791cda9a 100644
(file)
--- a/
lib/Target/MSP430/MSP430InstrInfo.td
+++ b/
lib/Target/MSP430/MSP430InstrInfo.td
@@
-690,6
+690,10
@@
def SEXT16r : Pseudo<(outs GR16:$dst), (ins GR16:$src),
} // Defs = [SRW]
+def ZEXT16r : Pseudo<(outs GR16:$dst), (ins GR16:$src),
+ "mov.b\t{$src, $dst}",
+ [(set GR16:$dst, (zext (trunc GR16:$src)))]>;
+
def SWPB16r : Pseudo<(outs GR16:$dst), (ins GR16:$src),
"swpb\t$dst",
[(set GR16:$dst, (bswap GR16:$src))]>;
@@
-899,3
+903,6
@@
def : Pat<(store (subc (load addr:$dst), GR8:$src), addr:$dst),
(SUB8mr addr:$dst, GR8:$src)>;
def : Pat<(store (subc (load addr:$dst), (i8 (load addr:$src))), addr:$dst),
(SUB8mm addr:$dst, addr:$src)>;
+
+// peephole patterns
+def : Pat<(and GR16:$src, 255), (ZEXT16r GR16:$src)>;