[X86] Add TB_NO_REVERSE to some memory folding table entries where the register form...

We don't know if its safe to unfold if we're in 32-bit mode.

This is simlar to what was done to some load opcodes in r363523.

I think its pretty unlikely we will try to unfold these anyway so
I don't think this is testable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@363595 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86InstrFoldTables.cpp b/lib/Target/X86/X86InstrFoldTables.cpp
index 5e7c8f2e0328b0fca7e5d008e95cb545e1e1baef..73263f23f841b032828dfdf9df35f2f82436d79e 100644 (file)
--- a/lib/Target/X86/X86InstrFoldTables.cpp
+++ b/lib/Target/X86/X86InstrFoldTables.cpp
@@ -307,7 +307,7 @@ static const X86MemoryFoldTableEntry MemoryFoldTable0[] = {
   { X86::MOVDQUrr,            X86::MOVDQUmr,            TB_FOLDED_STORE },
   { X86::MOVPDI2DIrr,         X86::MOVPDI2DImr,         TB_FOLDED_STORE },
   { X86::MOVPQIto64rr,        X86::MOVPQI2QImr,         TB_FOLDED_STORE | TB_NO_REVERSE },
-  { X86::MOVSDto64rr,         X86::MOVSDto64mr,         TB_FOLDED_STORE },
+  { X86::MOVSDto64rr,         X86::MOVSDto64mr,         TB_FOLDED_STORE | TB_NO_REVERSE },
   { X86::MOVSS2DIrr,          X86::MOVSS2DImr,          TB_FOLDED_STORE },
   { X86::MOVUPDrr,            X86::MOVUPDmr,            TB_FOLDED_STORE },
   { X86::MOVUPSrr,            X86::MOVUPSmr,            TB_FOLDED_STORE },
@@ -391,8 +391,8 @@ static const X86MemoryFoldTableEntry MemoryFoldTable0[] = {
   { X86::VMOVPDI2DIrr,        X86::VMOVPDI2DImr,        TB_FOLDED_STORE },
   { X86::VMOVPQIto64Zrr,      X86::VMOVPQI2QIZmr,       TB_FOLDED_STORE | TB_NO_REVERSE },
   { X86::VMOVPQIto64rr,       X86::VMOVPQI2QImr,        TB_FOLDED_STORE | TB_NO_REVERSE },
-  { X86::VMOVSDto64Zrr,       X86::VMOVSDto64Zmr,       TB_FOLDED_STORE },
-  { X86::VMOVSDto64rr,        X86::VMOVSDto64mr,        TB_FOLDED_STORE },
+  { X86::VMOVSDto64Zrr,       X86::VMOVSDto64Zmr,       TB_FOLDED_STORE | TB_NO_REVERSE },
+  { X86::VMOVSDto64rr,        X86::VMOVSDto64mr,        TB_FOLDED_STORE | TB_NO_REVERSE },
   { X86::VMOVSS2DIZrr,        X86::VMOVSS2DIZmr,        TB_FOLDED_STORE },
   { X86::VMOVSS2DIrr,         X86::VMOVSS2DImr,         TB_FOLDED_STORE },
   { X86::VMOVUPDYrr,          X86::VMOVUPDYmr,          TB_FOLDED_STORE },