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On Aug 15, 2010, at 5:12 PM, Silvio Ricardo Cordeiro wrote: > Is there a way for me to collect statistics about the number of loads/stores added by the "linearscan" register allocator (just like can be done with the "local" allocator)? I still haven't grokked very well the interaction between RALinScan and Spiller... Should I add those two statistics to the

Hi, Is there a way for me to collect statistics about the number of loads/stores added by the "linearscan" register allocator (just like can be done with the "local" allocator)? I still haven't grokked very well the interaction between RALinScan and Spiller... Should I add those two statistics to the spiller's class? Thanks, -- Silvio Ricardo Cordeiro --------------

...sing both *local* and *linearscan* allocators (I'm using LLVM 2.7). For *local*, I get a Load/Store count of 314/367. But when I use *linearscan*, the counters at VirtRegRewriter.cpp end up being 0/0. I've also tried to compile a couple other source files, and VirtRegRewriter.cpp always has NumLoads=0 and NumStores=0 in the end. I can't believe linearscan is *that *good! I've tried to add other variables to the source code, but it seems to be spiling them without updating NumLoads/NumStores... Is there a source file that's commonly used to test this kind of thing? We are workin...

On 25 Aug 2010, at 02:04, Silvio Ricardo Cordeiro wrote: > On Sun, Aug 15, 2010 at 10:04 PM, Jakob Stoklund Olesen <stoklund at 2pi.dk> wrote: > > On Aug 15, 2010, at 5:12 PM, Silvio Ricardo Cordeiro wrote: > > > Is there a way for me to collect statistics about the number of loads/stores added by the "linearscan" register allocator (just like can be done with

...n't have been folded, so the first comment seems to be superfluous. PhysReg = getReg(MBB, MI, VirtReg); } --- svn.llvm.orig/lib/CodeGen/RegAllocLocal.cpp +++ svn.llvm/lib/CodeGen/RegAllocLocal.cpp @@ -35,7 +35,6 @@ STATISTIC(NumStores, "Number of stores added"); STATISTIC(NumLoads , "Number of loads added"); -STATISTIC(NumFolded, "Number of loads/stores folded into instructions"); namespace { static RegisterRegAlloc @@ -500,12 +499,7 @@ if (PhysReg) { // Register is available, allocate it! assignVirtToPhysReg(VirtReg, PhysReg); } else {...

In the following example with gcc style builtins, in once case llvm.powi.f64 is emitted and in the other just a call to library function powf. ~/llvm/build/Debug+Asserts/bin/clang -S -emit-llvm pow1.c Why is that? Is there a way to force the call to an llvm style builtin? Tia. Reed -------------- next part -------------- A non-text attachment was scrubbed... Name: pow1.c Type: text/x-csrc