[llvm] r201463 - Add opcode extension forms of MOV8ri/MOV16ri/MOV32ri.

[Craig Topper]

Author: ctopper
Date: Sat Feb 15 01:29:18 2014
New Revision: 201463

URL: http://llvm.org/viewvc/llvm-project?rev=201463&view=rev
Log:
Add opcode extension forms of MOV8ri/MOV16ri/MOV32ri.

Modified:
    llvm/trunk/lib/Target/X86/X86InstrInfo.td
    llvm/trunk/test/MC/Disassembler/X86/x86-32.txt

Modified: llvm/trunk/lib/Target/X86/X86InstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86InstrInfo.td?rev=201463&r1=201462&r2=201463&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86InstrInfo.td (original)
+++ llvm/trunk/lib/Target/X86/X86InstrInfo.td Sat Feb 15 01:29:18 2014
@@ -1212,6 +1212,16 @@ def MOV64ri : RIi64<0xB8, AddRegFrm, (ou
                     "movabs{q}\t{$src, $dst|$dst, $src}",
                     [(set GR64:$dst, imm:$src)], IIC_MOV>;
 }
+
+// Longer forms that use a ModR/M byte. Needed for disassembler
+let isCodeGenOnly = 1, ForceDisassemble = 1, hasSideEffects = 0 in {
+def MOV8ri_alt  : Ii8 <0xC6, MRM0r, (outs GR8 :$dst), (ins i8imm :$src),
+                   "mov{b}\t{$src, $dst|$dst, $src}", [], IIC_MOV>;
+def MOV16ri_alt : Ii16<0xC7, MRM0r, (outs GR16:$dst), (ins i16imm:$src),
+                   "mov{w}\t{$src, $dst|$dst, $src}", [], IIC_MOV>, OpSize16;
+def MOV32ri_alt : Ii32<0xC7, MRM0r, (outs GR32:$dst), (ins i32imm:$src),
+                   "mov{l}\t{$src, $dst|$dst, $src}", [], IIC_MOV>, OpSize32;
+}
 } // SchedRW
 
 let SchedRW = [WriteStore] in {

Modified: llvm/trunk/test/MC/Disassembler/X86/x86-32.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/Disassembler/X86/x86-32.txt?rev=201463&r1=201462&r2=201463&view=diff
==============================================================================
--- llvm/trunk/test/MC/Disassembler/X86/x86-32.txt (original)
+++ llvm/trunk/test/MC/Disassembler/X86/x86-32.txt Sat Feb 15 01:29:18 2014
@@ -699,3 +699,12 @@
 
 # CHECK: movl %fs:0, %eax
 0x64 0xa1 0x00 0x00 0x00 0x00
+
+# CHECK: movb $-1, %al
+0xc6 0xc0 0xff
+
+# CHECK: movw $65535, %ax
+0x66 0xc7 0xc0 0xff 0xff
+
+# CHECK: movl $4294967295, %eax
+0xc7 0xc0 0xff 0xff 0xff 0xff