include/llvm/CodeGen/MachineInstrBuilder.h: Add addClobber() inline

 convenience method.  Fix typo in comment.
lib/Target/X86/InstSelectSimple.cpp: Explicitly specify some implicit uses.
 Use MOVZX/MOVSX instead of MOV instructions with sign extend instructions.
 Take out LEAVE instructions.
 32-bit IDIV and DIV use CDQ, not CWQ (CWQ is a typo).
 Fix typo in comment and remove some FIXME comments.
lib/Target/X86/Printer.cpp: Include X86InstrInfo.h and llvm/Function.h.
 Add some simple code to Printer::runOnFunction to iterate over
  MachineBasicBlocks and call X86InstrInfo::print().
lib/Target/X86/X86InstrInfo.def: Make some more instructions with
 implicit defs "Void".  Add more sign/zero extending "move" insns
 (movsx, movzx).
lib/Target/X86/X86RegisterInfo.def: Add EFLAGS as a register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4707 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 10 insertions, 1 deletions

diff --git a/include/llvm/CodeGen/MachineInstrBuilder.h b/include/llvm/CodeGen/MachineInstrBuilder.h
index d594d1b025..a360be6de3 100644
--- a/include/llvm/CodeGen/MachineInstrBuilder.h
+++ b/include/llvm/CodeGen/MachineInstrBuilder.h
@@ -34,13 +34,22 @@ struct MachineInstrBuilder {
     return *this;
   }
 
-  /// addReg - Add an LLVM value that is to be used as a register...x
+  /// addReg - Add an LLVM value that is to be used as a register...
   ///
   MachineInstrBuilder &addReg(Value *V, bool isDef = false, bool isDNU = false){
     MI->addRegOperand(V, isDef, isDNU);
     return *this;
   }
 
+  /// addClobber - Assert that this MI is going to clobber a specific
+  /// register. Useful for instructions that always clobber certain hard regs.
+  /// (Same as addReg(RegNo, true) but shorter and more obvious).
+  ///
+  MachineInstrBuilder &addClobber(int RegNo) {
+    MI->addRegOperand(RegNo, true);
+    return *this;
+  }
+
   /// addPCDisp - Add an LLVM value to be treated as a PC relative
   /// displacement...
   ///