bswap implementation
llvm-svn: 25312
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index d93ec3a..a749380 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -109,6 +109,7 @@
setOperationAction(ISD::READCYCLECOUNTER , MVT::i64 , Custom);
if (!X86DAGIsel) {
+ setOperationAction(ISD::BSWAP , MVT::i32 , Expand);
setOperationAction(ISD::ROTL , MVT::i8 , Expand);
setOperationAction(ISD::ROTR , MVT::i8 , Expand);
setOperationAction(ISD::ROTL , MVT::i16 , Expand);
@@ -116,6 +117,7 @@
setOperationAction(ISD::ROTL , MVT::i32 , Expand);
setOperationAction(ISD::ROTR , MVT::i32 , Expand);
}
+ setOperationAction(ISD::BSWAP , MVT::i16 , Expand);
setOperationAction(ISD::READIO , MVT::i1 , Expand);
setOperationAction(ISD::READIO , MVT::i8 , Expand);
diff --git a/llvm/lib/Target/X86/X86InstrInfo.td b/llvm/lib/Target/X86/X86InstrInfo.td
index 291abd4..5427e24 100644
--- a/llvm/lib/Target/X86/X86InstrInfo.td
+++ b/llvm/lib/Target/X86/X86InstrInfo.td
@@ -518,7 +518,9 @@
let isTwoAddress = 1 in // R32 = bswap R32
def BSWAP32r : I<0xC8, AddRegFrm,
- (ops R32:$dst, R32:$src), "bswap{l} $dst", []>, TB;
+ (ops R32:$dst, R32:$src),
+ "bswap{l} $dst",
+ [(set R32:$dst, (bswap R32:$src))]>, TB;
def XCHG8rr : I<0x86, MRMDestReg, // xchg R8, R8
(ops R8:$src1, R8:$src2),