commit 2ba766ae84c31ee6066f9c5e8029751d3e92cb05
author Craig Topper <craig.topper@gmail.com> Fri Dec 30 06:23:39 2011 +0000
committer Craig Topper <craig.topper@gmail.com> Fri Dec 30 06:23:39 2011 +0000
tree b0cf1822236261cd470c1c09c7b276ea86ea17db
parent 03a0beda885cee8bb474f18d0b834b06c562f4b7

Add disassembler support for VPERMIL2PD and VPERMIL2PS.

llvm-svn: 147368

llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c

diff --git a/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c b/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
index 1a24807..c915df0 100644
--- a/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
+++ b/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
@@ -1472,6 +1472,7 @@
 static int readOperands(struct InternalInstruction* insn) {
   int index;
   int hasVVVV, needVVVV;
+  int sawRegImm = 0;
   
   dbgprintf(insn, "readOperands()");
 
@@ -1500,11 +1501,20 @@
       dbgprintf(insn, "We currently don't hande code-offset encodings");
       return -1;
     case ENCODING_IB:
+      if (sawRegImm) {
+        // saw a register immediate so don't read again and instead split the previous immediate
+        // FIXME: This is a hack
+        insn->immediates[insn->numImmediatesConsumed++] = insn->immediates[insn->numImmediatesConsumed - 1] & 0xf;
+        break;
+      }
       if (readImmediate(insn, 1))
         return -1;
       if (insn->spec->operands[index].type == TYPE_IMM3 &&
           insn->immediates[insn->numImmediatesConsumed - 1] > 7)
         return -1;
+      if (insn->spec->operands[index].type == TYPE_XMM128 ||
+          insn->spec->operands[index].type == TYPE_XMM256)
+        sawRegImm = 1;
       break;
     case ENCODING_IW:
       if (readImmediate(insn, 2))