From 9f8e50cdb4461c76c908e4906b271985d0b14c94 Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Tue, 10 May 2016 05:28:02 +0000
Subject: [X86] Add ZMM registers to the X86_INTR calling convention preserved
 mask when AVX512 is enabled.

llvm-svn: 269018
---
 llvm/lib/Target/X86/X86RegisterInfo.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'llvm/lib')

diff --git a/llvm/lib/Target/X86/X86RegisterInfo.cpp b/llvm/lib/Target/X86/X86RegisterInfo.cpp
index 7b1059ee32d..9ecf5e51b1d 100644
--- a/llvm/lib/Target/X86/X86RegisterInfo.cpp
+++ b/llvm/lib/Target/X86/X86RegisterInfo.cpp
@@ -385,6 +385,8 @@ X86RegisterInfo::getCallPreservedMask(const MachineFunction &MF,
     return CSR_64_RegMask;
   case CallingConv::X86_INTR:
     if (Is64Bit) {
+      if (HasAVX512)
+        return CSR_64_AllRegs_AVX512_RegMask;
       if (HasAVX)
         return CSR_64_AllRegs_AVX_RegMask;
       else
-- 
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