similar to: [LLVMdev] flag_unit_at_a_time and pass scheduling in llvm-gcc

On Apr 15, 2008, at 11:49 PM, Duncan Sands wrote: > As far as I can see flag_unit_at_a_time > is used to control whether inter-procedural/whole-module passes are > scheduled. You can do inlining even when flag_unit_at_a_time is off. And one can enable unit-at-a-time without enabling any optimizations. The unit-at- a-time is not meant to select optimization passes, though it may

And how about this one so as not to include a C specific header in llvm-backend (!!!) and not to have llvm-backend use a C specific flag (flag_no_builtin)? Index: gcc-4.2.llvm/gcc/c-opts.c =================================================================== --- gcc-4.2.llvm.orig/gcc/c-opts.c 2008-07-30 21:25:28.000000000 +0200 +++ gcc-4.2.llvm/gcc/c-opts.c 2008-07-30 21:26:17.000000000 +0200 @@

Done. -bw On Jul 30, 2008, at 12:35 PM, Duncan Sands wrote: > And how about this one so as not to include a C specific > header in llvm-backend (!!!) and not to have llvm-backend > use a C specific flag (flag_no_builtin)? > > Index: gcc-4.2.llvm/gcc/c-opts.c > =================================================================== > --- gcc-4.2.llvm.orig/gcc/c-opts.c 2008-07-30

Hi Devang, > You can do inlining even when flag_unit_at_a_time is off. And one can > enable unit-at-a-time without enabling any optimizations. The unit-at- > a-time is not meant to select optimization passes, though it may > influence selection. this flag is used quite a bit in llvm-backend.cpp, for example: if (flag_unit_at_a_time) {

On Apr 16, 2008, at 1:02 PM, Duncan Sands wrote: > Hi Devang, > >> You can do inlining even when flag_unit_at_a_time is off. And one can >> enable unit-at-a-time without enabling any optimizations. The unit- >> at- >> a-time is not meant to select optimization passes, though it may >> influence selection. > > this flag is used quite a bit in

Hi Devang, > > this flag is used quite a bit in llvm-backend.cpp, for example: > > > > if (flag_unit_at_a_time) { > > PM->add(createGlobalOptimizerPass()); // Optimize out > > global vars > > PM->add(createGlobalDCEPass()); // Remove unused > > fns and globs > >

On Thu, 17 Apr 2008, Duncan Sands wrote: >>> I thought I understood why but it seems that I don't :) >> >> IMO, we should avoid using flag_unit_at_a_time here. > > given DannyB's explanation that this flag exists in gcc so that glibc > works properly in spite of abusing ASM, perhaps this logic in llvm-backend > also exists to ensure that glibc works? I

On Jul 30, 2008, at 11:39 AM, Duncan Sands wrote: > On Wednesday 30 July 2008 18:13:27 Duncan Sands wrote: >> On x86-64 linux, in stage 2, I get: >> >> c++ -g -O2 -DIN_GCC -W -Wall -Wwrite-strings -Wstrict- >> prototypes -Wmissing-prototypes -pedantic -Wno-long-long -Wno- >> variadic-macros -Wno-overlength-strings -Wold-style-definition - >>

Hi, Until recently I've been building LLVM with SHARED_LIBRARY=1. However, sith current svn, build now fails with unresolved symbols building opt. I've done a clean checkout, configure and make so it's not down to any local changes I've made. I'm building with: ./configure --enable-assertions \ --enable-expensive-checks=no \ --enable-pic \ --enable-targets=host-only \

I suspect my change adding --enable-shared broke you, since that configure option didn't exist before last week (r97119). SHARED_LIBRARY is not one of the variables you're supposed to be able to set on make's command line (http://llvm.org/docs/MakefileGuide.html#variables). What are you using it for? What happens if you remove it? On Tue, Mar 2, 2010 at 1:35 PM, James Williams

Hi, Thanks for getting back to me. I don't actually need opt dynamically linked but I do want shared libraries. If run make without "SHARED_LIBRARY=1" I don't appear to get any shared libraries built or installed. Is LLVM built as shared libraries supported? If so what's the correct build procedure? -- James On 2 March 2010 21:51, Jeffrey Yasskin <jyasskin at

Hi All, I have installed llvm-gcc4 patch to enable various llvm optimizations at -O1/-O2/-O3. This means instead of $ llvm-gcc4 --emit-llvm foo.c -o foo.bc $ opt foo.bc -o foo_optimized.bc $ llc foo_optimized.bc -o foo.o One can directly use $ llvm-gcc4 -O2 foo.c -o foo.o to get optimized foo.o - Devang + + if (optimize > 0) { + + +

After LLVM rev 84987, the RaiseAllocations pass no longer exists. llvm-gcc needs to be patched: Index: gcc/llvm-linker-hack.cpp =================================================================== --- gcc/llvm-linker-hack.cpp (revision 84984) +++ gcc/llvm-linker-hack.cpp (working copy) @@ -80,7 +80,6 @@ llvm::createJumpThreadingPass(); llvm::createFunctionInliningPass();

On x86-64 linux, in stage 2, I get: c++ -g -O2 -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Wold-style-definition -Wmissing-format-attribute -fno-common -DHAVE_CONFIG_H -o f951 \ fortran/arith.o fortran/array.o fortran/bbt.o fortran/check.o fortran/data.o fortran/decl.o

On Wednesday 30 July 2008 18:13:27 Duncan Sands wrote: > On x86-64 linux, in stage 2, I get: > > c++ -g -O2 -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Wold-style-definition -Wmissing-format-attribute -fno-common -DHAVE_CONFIG_H -o f951 \ > fortran/arith.o

Hi, Sean: I'm sorry I lie. I didn't mean to lie. I did try to avoid making a *BIG* change to the IPO pass-ordering for now. However, when I make a minor change to populateLTOPassManager() by separating module-pass and non-module-passes, I saw quite a few performance difference, most of them are degradations. Attacking these degradations one by one in a piecemeal manner is wasting

Dear list, I need to read in a big table with 487 columns and 238,305 rows (row names and column names are supplied). Is there a code to read in the table in a fast way? I tried the read.table() but it seems that it takes forever :( Thanks a lot! Best, Allen

Is there a way to set how aggressive the inliner pass (createFunctionInliningPass) without going through the command line interface? Is there any reason InlineLimit isn't an argument to the createFunctionInliningPass function? Thanks, Robert

tools/firmware: remove "_PS0/3" Method Do not expose the ACPI power management "_PS0/3" Method to guest firmware. According to section 3.4 of the APCI specification 4.0, PCI device control the device power through its own specification but not through APCI. Qemu pushes "_PS0/3" to guest will cause a mess between ACPI PM and PCI PM as a result of incorrect ACPI table

​Hi all, I am using llvmlite for pyvex and I want the output of my code (which is written based on llvmlite) to be like pyvex. In pyvex, (https://github.com/angr/pyvex). Considering pyvex, I tried to implement the following statements in pyvex to llvmlite: for stmt in irsb.statements: if isinstance(stmt, pyvex.IRStmt.Store): print "ST%s(%s) = %s" % (self.endness[-2:].lower(),