// Logical Instructions...
//
-let isTwoAddress = 1 in
+let isTwoAddress = 1 , AddedComplexity = 15 in
def NOT64r : RI<0xF7, MRM2r, (outs GR64:$dst), (ins GR64:$src), "not{q}\t$dst",
[(set GR64:$dst, (not GR64:$src))]>;
def NOT64m : RI<0xF7, MRM2m, (outs), (ins i64mem:$dst), "not{q}\t$dst",
} // Defs = [EFLAGS]
// Bit tests.
-// TODO: BT with immediate operands.
// TODO: BTC, BTR, and BTS
let Defs = [EFLAGS] in {
def BT64rr : RI<0xA3, MRMDestReg, (outs), (ins GR64:$src1, GR64:$src2),
"bt{q}\t{$src2, $src1|$src1, $src2}",
[(X86bt GR64:$src1, GR64:$src2),
(implicit EFLAGS)]>, TB;
-def BT64mr : RI<0xA3, MRMDestMem, (outs), (ins i64mem:$src1, GR64:$src2),
- "bt{q}\t{$src2, $src1|$src1, $src2}",
- [(X86bt (loadi64 addr:$src1), GR64:$src2),
- (implicit EFLAGS)]>, TB;
+
+// Unlike with the register+register form, the memory+register form of the
+// bt instruction does not ignore the high bits of the index. From ISel's
+// perspective, this is pretty bizarre. Disable these instructions for now.
+//def BT64mr : RI<0xA3, MRMDestMem, (outs), (ins i64mem:$src1, GR64:$src2),
+// "bt{q}\t{$src2, $src1|$src1, $src2}",
+// [(X86bt (loadi64 addr:$src1), GR64:$src2),
+// (implicit EFLAGS)]>, TB;
+
+def BT64ri8 : Ii8<0xBA, MRM4r, (outs), (ins GR64:$src1, i64i8imm:$src2),
+ "bt{q}\t{$src2, $src1|$src1, $src2}",
+ [(X86bt GR64:$src1, i64immSExt8:$src2),
+ (implicit EFLAGS)]>, TB;
+// Note that these instructions don't need FastBTMem because that
+// only applies when the other operand is in a register. When it's
+// an immediate, bt is still fast.
+def BT64mi8 : Ii8<0xBA, MRM4m, (outs), (ins i64mem:$src1, i64i8imm:$src2),
+ "bt{q}\t{$src2, $src1|$src1, $src2}",
+ [(X86bt (loadi64 addr:$src1), i64immSExt8:$src2),
+ (implicit EFLAGS)]>, TB;
} // Defs = [EFLAGS]
// Conditional moves
".byte\t0x66; leaq\t${sym:mem}(%rip), $dst; .word\t0x6666; rex64",
[(set GR64:$dst, (X86tlsaddr tglobaltlsaddr:$sym))]>;
+let AddedComplexity = 5 in
+def MOV64GSrm : RI<0x8B, MRMSrcMem, (outs GR64:$dst), (ins i64mem:$src),
+ "movq\t%gs:$src, $dst",
+ [(set GR64:$dst, (gsload addr:$src))]>, SegGS;
+
//===----------------------------------------------------------------------===//
// Atomic Instructions
//===----------------------------------------------------------------------===//