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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29507 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-08-03 18:57:28 +00:00
parent fb1fcf08c9
commit 1eaf0ac1dc
1 changed files with 2 additions and 8 deletions
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10
include/llvm/Target/MRegisterInfo.h
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@ -208,20 +208,14 @@ protected:
public:
enum { // Define some target independent constants
/// NoRegister - This 'hard' register is a 'noop' register for all backends.
/// This is used as the destination register for instructions that do not
/// produce a value. Some frontends may use this as an operand register to
/// mean special things, for example, the Sparc backend uses R0 to mean %g0
/// which always PRODUCES the value 0. The X86 backend does not use this
/// value as an operand register, except for memory references.
///
/// NoRegister - This physical register is not a real target register. It
/// is useful as a sentinal.
NoRegister = 0,
/// FirstVirtualRegister - This is the first register number that is
/// considered to be a 'virtual' register, which is part of the SSA
/// namespace. This must be the same for all targets, which means that each
/// target is limited to 1024 registers.
///
FirstVirtualRegister = 1024
};