Date: Fri, 21 Jan 2011 16:06:12 +0100 From: Roman Divacky <rdivacky@freebsd.org> To: Nathan Whitehorn <nwhitehorn@freebsd.org> Cc: freebsd-toolchain@freebsd.org, Steve Kargl <sgk@troutmask.apl.washington.edu> Subject: Re: How to build an executable with profiling? Message-ID: <20110121150612.GA61861@freebsd.org> In-Reply-To: <4D3885A3.80407@freebsd.org> References: <20110117184411.GA54556@troutmask.apl.washington.edu> <20110118143205.GA34216@freebsd.org> <20110118160252.GA6506@troutmask.apl.washington.edu> <20110120185449.GA92860@freebsd.org> <4D3885A3.80407@freebsd.org>
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On Thu, Jan 20, 2011 at 12:57:39PM -0600, Nathan Whitehorn wrote: > On 01/20/11 12:54, Roman Divacky wrote: > >ok, I sat down and implemented what Hans Ottevanger told me to do :) > > > > http://lev.vlakno.cz/~rdivacky/clang-gprof.patch > > > >This patch does three things: > > > >1) emits "call .mcount" at the begining of every function body > > It's not always called .mcount. See /sys/$ARCH/include/profile.h > -Nathan fwiw - I updated the patch to use different names on different archs, can you guys review? case llvm::Triple::x86: case llvm::Triple::x86_64: return ".mcount"; case llvm::Triple::mips: case llvm::Triple::mipsel: case llvm::Triple::ppc: case llvm::Triple::ppc64: return "_mcount"; case llvm::Triple::arm: return "__mcount";
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