getCopyRegToReg() does not support ST(1) as dest register

[asl]

Bugzilla Link	2255
Resolution	FIXED
Resolved on	Jan 01, 2010 12:45
Version	trunk
OS	Linux
Attachments	Test bytecode
CC	@edwintorok,@pwo

Extended Description

Consider attached testcase. I'm having:

llc: /home/asl/proj/llvm/src/lib/Target/X86/X86InstrInfo.cpp:1593: virtual void llvm::X86InstrInfo::copyRegToReg(llvm::MachineBasicBlock&, llvm::ilist_iteratorllvm::MachineInstr, unsigned int, unsigned int, const llvm::TargetRegisterClass*, const llvm::TargetRegisterClass*) const: Assertion `DestReg == X86::ST0 && "Can only copy to TOS right now"' failed.

This currently prevents mingw64 CRT bootstrap with llvm-gcc

[edwintorok]

*** Bug llvm/llvm-bugzilla-archive#2269 has been marked as a duplicate of this bug. ***

[pwo]

I can not reproduce this with r72485. Fixed ?

[lattner]

Yep, looks fixed.

[edwintorok]

mentioned in issue llvm/llvm-bugzilla-archive#2269