Jakob Stoklund Olesen 7b77f35a1b Add an isSSA() flag to MachineRegisterInfo. ... This flag is true from isel to register allocation when the machine function is required to be in SSA form. The TwoAddressInstructionPass and PHIElimination passes clear the flag. The SSA flag wil be used by the machine code verifier to check for SSA form, and eventually an assertion can enforce it in +Asserts builds. This will catch the common target error of creating machine code with multiple defs of a virtual register. llvm-svn: 136532		2011-07-29 22:51:22 +00:00
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llvm	Add an isSSA() flag to MachineRegisterInfo.	2011-07-29 22:51:22 +00:00
llvm-c	LangRef and basic memory-representation/reading/writing for 'cmpxchg' and	2011-07-28 21:48:00 +00:00