commit ca2382d8097b5cee4dfbeb30f7b791aa242f313a
author Craig Topper <craig.topper@intel.com> Sat Oct 21 20:03:20 2017 +0000
committer Craig Topper <craig.topper@intel.com> Sat Oct 21 20:03:20 2017 +0000
tree 84efed07d62027bcc306035487154d0e68b861d3
parent cb028c73214c0ce18ed1fe76e2417c961f0389c9

[X86] Fix disassembling of EVEX instructions to stop accidentally decoding the SIB index register as an XMM/YMM/ZMM register.

This introduces a new operand type to encode the whether the index register should be XMM/YMM/ZMM. And new code to fixup the results created by readSIB.

This has the nice effect of removing a bunch of code that hard coded the name of every GATHER and SCATTER instruction to map the index type.

This fixes PR32807.

llvm-svn: 316273

llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoderCommon.h

diff --git a/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoderCommon.h b/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoderCommon.h
index e0f4399..9169d1a 100644
--- a/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoderCommon.h
+++ b/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoderCommon.h
@@ -410,6 +410,9 @@
   ENUM_ENTRY(TYPE_AVX512ICC,  "1-byte immediate operand for AVX512 icmp")      \
   ENUM_ENTRY(TYPE_UIMM8,      "1-byte unsigned immediate operand")             \
   ENUM_ENTRY(TYPE_M,          "Memory operand")                                \
+  ENUM_ENTRY(TYPE_MVSIBX,     "Memory operand using XMM index")                \
+  ENUM_ENTRY(TYPE_MVSIBY,     "Memory operand using YMM index")                \
+  ENUM_ENTRY(TYPE_MVSIBZ,     "Memory operand using ZMM index")                \
   ENUM_ENTRY(TYPE_SRCIDX,     "memory at source index")                        \
   ENUM_ENTRY(TYPE_DSTIDX,     "memory at destination index")                   \
   ENUM_ENTRY(TYPE_MOFFS,      "memory offset (relative to segment base)")      \