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2007-10-23Add the second of the "basic topics" tutorials.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43241 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-23Reorder the optimization and bitcode tutorials.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43240 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-23Fix up a broken #include, move code to its own section, add conclusions.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43239 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-23Finish up expr codegen.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43238 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-23several improvements suggested by Dan, thanks!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43237 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Fix memcpy lowering when addresses are 4-byte aligned but size is not ↵Evan Cheng
multiple of 4. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43234 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22The #include <iterator> isn't needed in this header.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43232 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Strength reduction improvements.Dan Gohman
- Avoid attempting stride-reuse in the case that there are users that aren't addresses. In that case, there will be places where the multiplications won't be folded away, so it's better to try to strength-reduce them. - Several SSE intrinsics have operands that strength-reduction can treat as addresses. The previous item makes this more visible, as any non-address use of an IV can inhibit stride-reuse. - Make ValidStride aware of whether there's likely to be a base register in the address computation. This prevents it from thinking that things like stride 9 are valid on x86 when the base register is already occupied. Also, XFAIL the 2007-08-10-LEA16Use32.ll test; the new logic to avoid stride-reuse elimintes the LEA in the loop, so the test is no longer testing what it was intended to test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43231 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Fix the folding of multiplication into addresses on x86, which was brokenDan Gohman
by the recent {U,S}MUL_LOHI changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43230 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Use ptr type in the immediate field of a BxA instruction so we don't end up ↵Evan Cheng
selecting 32-bit call instruction for ppc64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43228 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Add missing paratheses.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43227 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22add a 'don't use me' marker.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43226 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Support for expanding extending loads of integers withDuncan Sands
funky bit-widths. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43225 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Move the SCEV object factors from being static members of the individualDan Gohman
SCEV subclasses to being non-static member functions of the ScalarEvolution class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43224 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Fix up the logic for result expanding the various extensionDuncan Sands
operations so they work right for integers with funky bit-widths. For example, consider extending i48 to i64 on a 32 bit machine. The i64 result is expanded to 2 x i32. We know that the i48 operand will be promoted to i64, then also expanded to 2 x i32. If we had the expanded promoted operand to hand, then expanding the result would be trivial. Unfortunately at this stage we can only get hold of the promoted operand. So instead we kind of hand-expand, doing explicit shifting and truncating to get the top and bottom halves of the i64 operand into 2 x i32, which are then used to expand the result. This is harmless, because when the promoted operand is finally expanded all this bit fiddling turns into trivial operations which are eliminated either by the expansion code itself or the DAG combiner. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43223 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22fit in 80 cols :)Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43222 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22start of chapter 3Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43221 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Fix a few typos I noticed.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43220 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Add downloadable code samples.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43219 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Check in part 2: parser and ast.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43218 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Fix some code to make it actually work.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43217 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Put correct link in exampleBill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43216 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22add part 1, review appreciated.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43215 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22add an outline for "part 2".Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43214 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22rename tutorial 1 -> JITTutorial1, make unimplemented links not be dead links.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43213 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Fix an unfolding bug.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43212 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22- Only perform the unfolding optimization when the folding in question is ↵Evan Cheng
modref. - Remove a bogus assertion. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43211 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22add a mechanism for the JIT to invoke a function to lazily create functions ↵Chris Lattner
as they are referenced. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43210 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22llvm-gcc3 is dead, along with it __main.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43209 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-21Reg2Mem cleanup and optimizations:Anton Korobeynikov
- enable phi instructions demotion to stack - create alloca instructions in the entry block git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43208 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-21LoadLibraryPermanently doesn't throw.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43207 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-21Add a convenience method for creating EE's.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43206 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-21Allow for copysign having f80 second argument.Dale Johannesen
Fixes 5550319. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43205 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-20Add promote operand support for [su]int_to_fp.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43204 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-20Some improvements based on feedback from Anders.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43203 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-20Fix some weird indenting in code.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43202 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-20Use getOrInsertFunction() in tutorial 1. This makes for shorter, simpler, ↵Owen Anderson
and better example code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43201 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-20Add the beginnings of an LLVM tutorial. If anyone has suggestions, comments,Owen Anderson
or would like to contribute, let me know! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43200 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-20Add result promotion of FP_TO_*INT, fixing CodeGen/X86/trunc-to-bool.llChris Lattner
with the new legalizer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43199 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-20simplify some code.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43198 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-20Implement promote and expand for operands of memcpy and friends. Chris Lattner
This fixes CodeGen/X86/mem*.ll. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43197 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-20Added missing curly braces which renders the if clause useless in debug build.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43196 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-20Fix a few places vector operations were not gettingDale Johannesen
the operand's type from the right place. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43195 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-19Resolve unfold tables ambiguity.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43194 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-19New test case.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43193 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-19Local spiller optimization:Evan Cheng
Turn a store folding instruction into a load folding instruction. e.g. xorl %edi, %eax movl %eax, -32(%ebp) movl -36(%ebp), %eax orl %eax, -32(%ebp) => xorl %edi, %eax orl -36(%ebp), %eax mov %eax, -32(%ebp) This enables the unfolding optimization for a subsequent instruction which will also eliminate the newly introduced store instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43192 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-19Don't branch fold inline asm statements.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43191 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-19Add support for a few more nodes.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43190 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-19Redo "last ppc long double fix" as Chris wants.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43189 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-19Removed "-arch i386" by popular demand...Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43186 91177308-0d34-0410-b5e6-96231b3b80d8
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