Add rotate instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19690 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index 7534393..ff9e495 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -875,6 +875,69 @@
"sar{l} {$src, $dst|$dst, $src}">;
}
+// Rotate instructions
+// FIXME: provide shorter instructions when imm8 == 1
+def ROL8rCL : I<0xD2, MRM0r, (ops R8 :$dst, R8 :$src),
+ "rol{b} {%cl, $dst|$dst, %CL}">, Imp<[CL],[]>;
+def ROL16rCL : I<0xD3, MRM0r, (ops R16:$dst, R16:$src),
+ "rol{w} {%cl, $dst|$dst, %CL}">, Imp<[CL],[]>, OpSize;
+def ROL32rCL : I<0xD3, MRM0r, (ops R32:$dst, R32:$src),
+ "rol{l} {%cl, $dst|$dst, %CL}">, Imp<[CL],[]>;
+
+def ROL8ri : Ii8<0xC0, MRM0r, (ops R8 :$dst, R8 :$src1, i8imm:$src2),
+ "rol{b} {$src2, $dst|$dst, $src2}">;
+def ROL16ri : Ii8<0xC1, MRM0r, (ops R16:$dst, R16:$src1, i8imm:$src2),
+ "rol{w} {$src2, $dst|$dst, $src2}">, OpSize;
+def ROL32ri : Ii8<0xC1, MRM0r, (ops R32:$dst, R32:$src1, i8imm:$src2),
+ "rol{l} {$src2, $dst|$dst, $src2}">;
+
+let isTwoAddress = 0 in {
+ def ROL8mCL : I<0xD2, MRM0m, (ops i8mem :$dst),
+ "rol{b} {%cl, $dst|$dst, %CL}">, Imp<[CL],[]>;
+ def ROL16mCL : I<0xD3, MRM0m, (ops i16mem:$dst),
+ "rol{w} {%cl, $dst|$dst, %CL}">, Imp<[CL],[]>, OpSize;
+ def ROL32mCL : I<0xD3, MRM0m, (ops i32mem:$dst),
+ "rol{l} {%cl, $dst|$dst, %CL}">, Imp<[CL],[]>;
+ def ROL8mi : Ii8<0xC0, MRM0m, (ops i8mem :$dst, i8imm:$src),
+ "rol{b} {$src, $dst|$dst, $src}">;
+ def ROL16mi : Ii8<0xC1, MRM0m, (ops i16mem:$dst, i8imm:$src),
+ "rol{w} {$src, $dst|$dst, $src}">, OpSize;
+ def ROL32mi : Ii8<0xC1, MRM0m, (ops i32mem:$dst, i8imm:$src),
+ "rol{l} {$src, $dst|$dst, $src}">;
+}
+
+def ROR8rCL : I<0xD2, MRM1r, (ops R8 :$dst, R8 :$src),
+ "ror{b} {%cl, $dst|$dst, %CL}">, Imp<[CL],[]>;
+def ROR16rCL : I<0xD3, MRM1r, (ops R16:$dst, R16:$src),
+ "ror{w} {%cl, $dst|$dst, %CL}">, Imp<[CL],[]>, OpSize;
+def ROR32rCL : I<0xD3, MRM1r, (ops R32:$dst, R32:$src),
+ "ror{l} {%cl, $dst|$dst, %CL}">, Imp<[CL],[]>;
+
+def ROR8ri : Ii8<0xC0, MRM1r, (ops R8 :$dst, R8 :$src1, i8imm:$src2),
+ "ror{b} {$src2, $dst|$dst, $src2}">;
+def ROR16ri : Ii8<0xC1, MRM1r, (ops R16:$dst, R16:$src1, i8imm:$src2),
+ "ror{w} {$src2, $dst|$dst, $src2}">, OpSize;
+def ROR32ri : Ii8<0xC1, MRM1r, (ops R32:$dst, R32:$src1, i8imm:$src2),
+ "ror{l} {$src2, $dst|$dst, $src2}">;
+let isTwoAddress = 0 in {
+ def ROR8mCL : I<0xD2, MRM1m, (ops i8mem :$dst),
+ "ror{b} {%cl, $dst|$dst, %CL}">, Imp<[CL],[]>;
+ def ROR16mCL : I<0xD3, MRM1m, (ops i16mem:$dst),
+ "ror{w} {%cl, $dst|$dst, %CL}">, Imp<[CL],[]>, OpSize;
+ def ROR32mCL : I<0xD3, MRM1m, (ops i32mem:$dst),
+ "ror{l} {%cl, $dst|$dst, %CL}">, Imp<[CL],[]>;
+ def ROR8mi : Ii8<0xC0, MRM1m, (ops i8mem :$dst, i8imm:$src),
+ "ror{b} {$src, $dst|$dst, $src}">;
+ def ROR16mi : Ii8<0xC1, MRM1m, (ops i16mem:$dst, i8imm:$src),
+ "ror{w} {$src, $dst|$dst, $src}">, OpSize;
+ def ROR32mi : Ii8<0xC1, MRM1m, (ops i32mem:$dst, i8imm:$src),
+ "ror{l} {$src, $dst|$dst, $src}">;
+}
+
+
+
+// Double shift instructions (generalizations of rotate)
+
def SHLD32rrCL : I<0xA5, MRMDestReg, (ops R32:$dst, R32:$src1, R32:$src2),
"shld{l} {%cl, $src2, $dst|$dst, $src2, %CL}">,
Imp<[CL],[]>, TB;