Bug 2255 – getCopyRegToReg() does not support ST(1) as dest register

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Details

Summary:

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

Bug#:	2255
Product:	libraries
Component:	Backend: X86
Status:	NEW
Resolution:

Hardware:	PC
OS:	Linux
Version:	trunk
Priority:	P2
Severity:	normal
Target Milestone:	---

URL:

Keywords:

Depends on:

Blocks:

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People

Reporter:	Anton Korobeynikov <asl@math.spbu.ru>
Assigned To:	Unassigned LLVM Bugs <unassignedbugs@nondot.org>
CC:

Attachments
Test bytecode (564 bytes, application/octet-stream) 2008-04-27 18:35, Anton Korobeynikov	Details
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Description:	Opened: 2008-04-27 18:35

Created an attachment (id=1607) [details]
Test bytecode

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_iterator<llvm::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

------- Comment #1 From Török Edwin 2008-05-01 13:56:36 -------

*** Bug 2269 has been marked as a duplicate of this bug. ***

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