[X86] NFCI : Comment updation for EVEX to VEX translation.
Reviewers: llvm-commits, jbhateja
Reviewed By: jbhateja
Subscribers: llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D63055
llvm-svn: 362898
diff --git a/llvm/lib/Target/X86/X86EvexToVex.cpp b/llvm/lib/Target/X86/X86EvexToVex.cpp
index ec47088..e92fe4a 100644
--- a/llvm/lib/Target/X86/X86EvexToVex.cpp
+++ b/llvm/lib/Target/X86/X86EvexToVex.cpp
@@ -12,9 +12,9 @@
/// are encoded using the EVEX prefix and if possible replaces them by their
/// corresponding VEX encoding which is usually shorter by 2 bytes.
/// EVEX instructions may be encoded via the VEX prefix when the AVX-512
-/// instruction has a corresponding AVX/AVX2 opcode and when it does not
-/// use the xmm or the mask registers or xmm/ymm registers with indexes
-/// higher than 15.
+/// instruction has a corresponding AVX/AVX2 opcode, when vector length
+/// accessed by instruction is less than 512 bits and when it does not use
+// the xmm or the mask registers or xmm/ymm registers with indexes higher than 15.
/// The pass applies code reduction on the generated code for AVX-512 instrs.
//
//===----------------------------------------------------------------------===//