From 02ff6ba6f6bb804d01ff5354176486355b5e2676 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sat, 6 Nov 2010 07:34:58 +0000
Subject: [PATCH] move the "movsd -> movsl" alias to the .td files, tidy up the
 movsx and movzx aliases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118331 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/AsmParser/X86AsmParser.cpp |  6 ---
 lib/Target/X86/X86InstrInfo.td            | 47 ++++++++---------------
 2 files changed, 17 insertions(+), 36 deletions(-)

diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp
index 30d3a7e6c5a..9b57827a777 100644
--- a/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -969,12 +969,6 @@ ParseInstruction(StringRef Name, SMLoc NameLoc,
                                           NameLoc);
   }
 
-  // movsd -> movsl (when no operands are specified).
-  if (Name == "movsd" && Operands.size() == 1) {
-    delete Operands[0];
-    Operands[0] = X86Operand::CreateToken("movsl", NameLoc);
-  }
-
   // fstp <mem> -> fstps <mem>.  Without this, we'll default to fstpl due to
   // suffix searching.
   if (Name == "fstp" && Operands.size() == 2 &&
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index fdb17a13724..fd94d22bdf0 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -1370,6 +1370,10 @@ defm : IntegerCondCodeMnemonicAlias<"cmov", "q">;
 // Assembler Instruction Aliases
 //===----------------------------------------------------------------------===//
 
+// movsd with no operands (as opposed to the SSE scalar move of a double) is an
+// alias for movsl. (as in rep; movsd)
+def : InstAlias<"movsd", (MOVSD)>;
+
 // clr aliases.
 def : InstAlias<"clrb $reg", (XOR8rr  GR8 :$reg, GR8 :$reg)>;
 def : InstAlias<"clrw $reg", (XOR16rr GR16:$reg, GR16:$reg)>;
@@ -1377,38 +1381,21 @@ def : InstAlias<"clrl $reg", (XOR32rr GR32:$reg, GR32:$reg)>;
 def : InstAlias<"clrq $reg", (XOR64rr GR64:$reg, GR64:$reg)>;
 
 // movsx aliases
-def : InstAlias<"movsx $src, $dst",
-                (MOVSX16rr8W GR16:$dst, GR8:$src)>;
-def : InstAlias<"movsx $src, $dst",
-                (MOVSX16rm8W GR16:$dst, i8mem:$src)>;
-
-def : InstAlias<"movsx $src, $dst",
-                (MOVSX32rr8 GR32:$dst, GR8:$src)>;
-def : InstAlias<"movsx $src, $dst",
-                (MOVSX32rr16 GR32:$dst, GR16:$src)>;
-
-def : InstAlias<"movsx $src, $dst",
-                (MOVSX64rr8 GR64:$dst, GR8:$src)>;
-def : InstAlias<"movsx $src, $dst",
-                (MOVSX64rr16 GR64:$dst, GR16:$src)>;
-def : InstAlias<"movsx $src, $dst",
-                (MOVSX64rr32 GR64:$dst, GR32:$src)>;
+def : InstAlias<"movsx $src, $dst", (MOVSX16rr8W GR16:$dst, GR8:$src)>;
+def : InstAlias<"movsx $src, $dst", (MOVSX16rm8W GR16:$dst, i8mem:$src)>;
+def : InstAlias<"movsx $src, $dst", (MOVSX32rr8 GR32:$dst, GR8:$src)>;
+def : InstAlias<"movsx $src, $dst", (MOVSX32rr16 GR32:$dst, GR16:$src)>;
+def : InstAlias<"movsx $src, $dst", (MOVSX64rr8 GR64:$dst, GR8:$src)>;
+def : InstAlias<"movsx $src, $dst", (MOVSX64rr16 GR64:$dst, GR16:$src)>;
+def : InstAlias<"movsx $src, $dst", (MOVSX64rr32 GR64:$dst, GR32:$src)>;
 
 // movzx aliases
-def : InstAlias<"movzx $src, $dst",
-                (MOVZX16rr8W GR16:$dst, GR8:$src)>;
-def : InstAlias<"movzx $src, $dst",
-                (MOVZX16rm8W GR16:$dst, i8mem:$src)>;
-
-def : InstAlias<"movzx $src, $dst",
-                (MOVZX32rr8 GR32:$dst, GR8:$src)>;
-def : InstAlias<"movzx $src, $dst",
-                (MOVZX32rr16 GR32:$dst, GR16:$src)>;
-
-def : InstAlias<"movzx $src, $dst",
-                (MOVZX64rr8_Q GR64:$dst, GR8:$src)>;
-def : InstAlias<"movzx $src, $dst",
-                (MOVZX64rr16_Q GR64:$dst, GR16:$src)>;
+def : InstAlias<"movzx $src, $dst", (MOVZX16rr8W GR16:$dst, GR8:$src)>;
+def : InstAlias<"movzx $src, $dst", (MOVZX16rm8W GR16:$dst, i8mem:$src)>;
+def : InstAlias<"movzx $src, $dst", (MOVZX32rr8 GR32:$dst, GR8:$src)>;
+def : InstAlias<"movzx $src, $dst", (MOVZX32rr16 GR32:$dst, GR16:$src)>;
+def : InstAlias<"movzx $src, $dst", (MOVZX64rr8_Q GR64:$dst, GR8:$src)>;
+def : InstAlias<"movzx $src, $dst", (MOVZX64rr16_Q GR64:$dst, GR16:$src)>;
 // Note: No GR32->GR64 movzx form.