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| author | Chris Lattner <sabre@nondot.org> | 2005-01-11 04:31:30 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2005-01-11 04:31:30 +0000 |
| commit | 9d7cf998ca7de5366e34971c00b5d0e2e16a08d4 (patch) | |
| tree | 155cf41b10a35aed9d03af6d09f8debdc9b3773f /llvm/lib | |
| parent | 87e645c5bd3086c4efab0562e196a13eac732557 (diff) | |
| download | bcm5719-llvm-9d7cf998ca7de5366e34971c00b5d0e2e16a08d4.tar.gz bcm5719-llvm-9d7cf998ca7de5366e34971c00b5d0e2e16a08d4.zip | |
Emit NOT instructions.
llvm-svn: 19455
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelPattern.cpp | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86ISelPattern.cpp b/llvm/lib/Target/X86/X86ISelPattern.cpp index e9531c5db9f..f2edb651ae0 100644 --- a/llvm/lib/Target/X86/X86ISelPattern.cpp +++ b/llvm/lib/Target/X86/X86ISelPattern.cpp @@ -1382,8 +1382,21 @@ unsigned ISel::SelectExpr(SDOperand N) { case ISD::XOR: if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(N.getOperand(1))) { Tmp1 = SelectExpr(N.getOperand(0)); + + if (CN->isAllOnesValue()) { + switch (N.getValueType()) { + default: assert(0 && "Cannot add this type!"); + case MVT::i1: + case MVT::i8: Opc = X86::NOT8r; break; + case MVT::i16: Opc = X86::NOT16r; break; + case MVT::i32: Opc = X86::NOT32r; break; + } + BuildMI(BB, Opc, 1, Result).addReg(Tmp1); + return Result; + } + switch (N.getValueType()) { - default: assert(0 && "Cannot add this type!"); + default: assert(0 && "Cannot xor this type!"); case MVT::i1: case MVT::i8: Opc = X86::XOR8ri; break; case MVT::i16: Opc = X86::XOR16ri; break; |
