AVX 256-bit conversion instructions
Add the x86 VEX_L form to handle special cases where VEX_L must be set.
llvm-svn: 108274
diff --git a/llvm/lib/Target/X86/X86InstrFormats.td b/llvm/lib/Target/X86/X86InstrFormats.td
index 97578af..cc3fdf1 100644
--- a/llvm/lib/Target/X86/X86InstrFormats.td
+++ b/llvm/lib/Target/X86/X86InstrFormats.td
@@ -106,6 +106,7 @@
class VEX_W { bit hasVEX_WPrefix = 1; }
class VEX_4V : VEX { bit hasVEX_4VPrefix = 1; }
class VEX_I8IMM { bit hasVEX_i8ImmReg = 1; }
+class VEX_L { bit hasVEX_L = 1; }
class X86Inst<bits<8> opcod, Format f, ImmType i, dag outs, dag ins,
string AsmStr, Domain d = GenericDomain>
@@ -138,6 +139,7 @@
bit hasVEX_4VPrefix = 0; // Does this inst requires the VEX.VVVV field?
bit hasVEX_i8ImmReg = 0; // Does this inst requires the last source register
// to be encoded in a immediate field?
+ bit hasVEX_L = 0; // Does this inst uses large (256-bit) registers?
// TSFlags layout should be kept in sync with X86InstrInfo.h.
let TSFlags{5-0} = FormBits;
@@ -155,6 +157,7 @@
let TSFlags{33} = hasVEX_WPrefix;
let TSFlags{34} = hasVEX_4VPrefix;
let TSFlags{35} = hasVEX_i8ImmReg;
+ let TSFlags{36} = hasVEX_L;
}
class I<bits<8> o, Format f, dag outs, dag ins, string asm,