[LLVMdev] X86TarIgetLowering::LowerToBT

[Smith, Kevin B]

I’ll be happy to run it for you.  Do you want Intel64, x86 or both?  The Intel compiler doesn’t have a –Oz option.  It has –Os and –O[123].

Also, FWIW, one of the Intel compiler experts on BT will comment on this thread, and on our rules for BT usage later this afternoon.

Kevin B. Smith

From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On Behalf Of Chris Sears
Sent: Friday, January 23, 2015 9:37 AM
To: Stephen Canon
Cc: LLVM Developers Mailing List
Subject: Re: [LLVMdev] X86TargetLowering::LowerToBT

Constant mask case.

Sanjay, could you run this through the Intel compiler with the appropriate flags?
They have an -O2 but I couldn't find an equivalent -Oz.
For LLVM, it generates BTQ for testing bits 32-63.

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