From: Evan Cheng <evan.cheng@apple.com>
Date: Thu, 26 Jan 2006 02:27:43 +0000 (+0000)
Subject: Work around some x86 Darwin assembler bugs
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=67caa39e4c0ee978edc235c52af6261684c29c3a;p=oota-llvm.git

Work around some x86 Darwin assembler bugs


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25638 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86ATTAsmPrinter.cpp b/lib/Target/X86/X86ATTAsmPrinter.cpp
index c4639b31510..d9b263ae62a 100755
--- a/lib/Target/X86/X86ATTAsmPrinter.cpp
+++ b/lib/Target/X86/X86ATTAsmPrinter.cpp
@@ -220,6 +220,32 @@ void X86ATTAsmPrinter::printMemReference(const MachineInstr *MI, unsigned Op){
 ///
 void X86ATTAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
   ++EmittedInsts;
+  // This works around some Darwin assembler bugs.
+  if (forDarwin) {
+    switch (MI->getOpcode()) {
+    case X86::REP_MOVSB:
+      O << "rep/movsb (%esi),(%edi)\n";
+      return;
+    case X86::REP_MOVSD:
+      O << "rep/movsl (%esi),(%edi)\n";
+      return;
+    case X86::REP_MOVSW:
+      O << "rep/movsw (%esi),(%edi)\n";
+      return;
+    case X86::REP_STOSB:
+      O << "rep/stosb\n";
+      return;
+    case X86::REP_STOSD:
+      O << "rep/stosl\n";
+      return;
+    case X86::REP_STOSW:
+      O << "rep/stosw\n";
+      return;
+    default:
+      break;
+    }
+  }
+
   // Call the autogenerated instruction printer routines.
   printInstruction(MI);
 }