implement aliases for shld/shrd, part of rdar://8418316
llvm-svn: 113937
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@ -834,6 +834,15 @@ ParseInstruction(StringRef Name, SMLoc NameLoc,
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std::swap(Operands[1], Operands[2]);
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std::swap(Operands[1], Operands[2]);
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}
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}
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// FIXME: Hack to handle recognize "sh[lr]d op,op" -> "shld $1, op,op".
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if ((Name.startswith("shld") || Name.startswith("shrd")) &&
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Operands.size() == 3) {
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const MCExpr *One = MCConstantExpr::Create(1, getParser().getContext());
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Operands.insert(Operands.begin()+1,
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X86Operand::CreateImm(One, NameLoc, NameLoc));
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}
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// FIXME: Hack to handle recognize "in[bwl] <op>". Canonicalize it to
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// FIXME: Hack to handle recognize "in[bwl] <op>". Canonicalize it to
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// "inb <op>, %al".
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// "inb <op>, %al".
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if ((Name == "inb" || Name == "inw" || Name == "inl") &&
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if ((Name == "inb" || Name == "inw" || Name == "inl") &&
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@ -268,3 +268,14 @@ rcl %bl
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rcll 0xdeadbeef(%ebx,%ecx,8)
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rcll 0xdeadbeef(%ebx,%ecx,8)
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rcr %ecx
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rcr %ecx
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rcrl 0x12345678
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rcrl 0x12345678
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// rdar://8418316
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// CHECK: shldw $1, %bx, %bx
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// CHECK: shldw $1, %bx, %bx
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// CHECK: shrdw $1, %bx, %bx
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// CHECK: shrdw $1, %bx, %bx
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shld %bx,%bx
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shld $1, %bx,%bx
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shrd %bx,%bx
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shrd $1, %bx,%bx
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