From: Craig Topper <craig.topper@gmail.com>
Date: Sat, 7 Jan 2017 06:56:54 +0000 (+0000)
Subject: [X86] Disable load unfolding for 128-bit MOVDDUP instructions since the load size... 
X-Git-Tag: android-x86-7.1-r4~22364
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=7be24b7e92b445445e8829cafea5b76e959d72e6;p=android-x86%2Fexternal-llvm.git

[X86] Disable load unfolding for 128-bit MOVDDUP instructions since the load size is smaller than the register size so unfolding would increase the load size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291338 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp
index 579359794fb..189c6f89be3 100644
--- a/lib/Target/X86/X86InstrInfo.cpp
+++ b/lib/Target/X86/X86InstrInfo.cpp
@@ -543,7 +543,7 @@ X86InstrInfo::X86InstrInfo(X86Subtarget &STI)
     { X86::MOV8rr,          X86::MOV8rm,              0 },
     { X86::MOVAPDrr,        X86::MOVAPDrm,            TB_ALIGN_16 },
     { X86::MOVAPSrr,        X86::MOVAPSrm,            TB_ALIGN_16 },
-    { X86::MOVDDUPrr,       X86::MOVDDUPrm,           0 },
+    { X86::MOVDDUPrr,       X86::MOVDDUPrm,           TB_NO_REVERSE },
     { X86::MOVDI2PDIrr,     X86::MOVDI2PDIrm,         0 },
     { X86::MOVDI2SSrr,      X86::MOVDI2SSrm,          0 },
     { X86::MOVDQArr,        X86::MOVDQArm,            TB_ALIGN_16 },
@@ -661,7 +661,7 @@ X86InstrInfo::X86InstrInfo(X86Subtarget &STI)
     { X86::VMOV64toSDrr,    X86::VMOV64toSDrm,        0 },
     { X86::VMOVAPDrr,       X86::VMOVAPDrm,           TB_ALIGN_16 },
     { X86::VMOVAPSrr,       X86::VMOVAPSrm,           TB_ALIGN_16 },
-    { X86::VMOVDDUPrr,      X86::VMOVDDUPrm,          0 },
+    { X86::VMOVDDUPrr,      X86::VMOVDDUPrm,          TB_NO_REVERSE },
     { X86::VMOVDI2PDIrr,    X86::VMOVDI2PDIrm,        0 },
     { X86::VMOVDI2SSrr,     X86::VMOVDI2SSrm,         0 },
     { X86::VMOVDQArr,       X86::VMOVDQArm,           TB_ALIGN_16 },