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2004-04-21I'm allergic to the word `stuff'.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13096 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-21Make SparcV9RegInfo::getRegType() return the right answer for registersBrian Gaeke
of IntCC, FloatCC, and Special types. Make SparcV9RegInfo::getRegClassIDOfRegType() return the right answer if you ask for the class corresponding to SpecialRegType. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13095 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-21Include cerrno (gcc-3.4 fix)Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13091 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-21Fix typeoChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13089 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-20REALLY fix PR324: don't delete linkonce functions until after the SCC traversalChris Lattner
is done, which avoids invalidating iterators in the SCC traversal routines git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13088 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-20Pass the callgraph not the moduleChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13087 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-20Add the ability for SCC passes to initialize and finalize themselvesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13084 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-20Fix PR325Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13081 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-20Fix PR324 and testcase: Inline/2004-04-20-InlineLinkOnce.llxChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13080 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-20Make it legal to ask for the type of a specialregBrian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13078 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-20Add support for the select instructionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13076 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-19Make it legal to request a load or store of %fsr.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13073 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-19Regularize include guards and remove some excess whitespace.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13071 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-19Tighten up SparcV9FloatCCRegClass::getRegName()'s assertion - if you ask it forBrian Gaeke
the name of %fsr (as the comment in SparcV9RegClassInfo.h used to suggest) you would walk off the end of the FloatCCRegName array. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13070 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-19Regularize include guards, remove some excess whitespace and fix some comments.Brian Gaeke
Remove the extra %fsr register from SparcV9FloatCCRegClass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13069 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-19Initial checkin of a simple loop unswitching pass. It still needs work,Chris Lattner
but it's a start, and seems to do it's basic job. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13068 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-19It's not just a printer, it's actually an analysis tooChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13064 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-19Remove code to update loop depthsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13058 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-19Add #includeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13057 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18Move isLoopInvariant to the Loop classChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13051 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18Add new methodChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13050 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18Correct rewriting of exit blocks after my last patchChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13048 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18Fix computation of exit blocksChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13047 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18Loop exit sets are no longer explicitly held, they are dynamically computed ↵Chris Lattner
on demand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13046 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18Change the ExitBlocks list from being explicitly contained in the LoopChris Lattner
structure to being dynamically computed on demand. This makes updating loop information MUCH easier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13045 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18Reduce the unrolling limitChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13040 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18If the preheader of the loop was the entry block of the function, make sureChris Lattner
that the exit block of the loop becomes the new entry block of the function. This was causing a verifier assertion on 252.eon. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13039 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18Be much more careful about how we update instructions outside of the loopChris Lattner
using instructions inside of the loop. This should fix the MishaTest failure from last night. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13038 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18Implement methodChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13036 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18After unrolling our single basic block loop, fold it into the preheader and exitChris Lattner
block. The primary motivation for doing this is that we can now unroll nested loops. This makes a pretty big difference in some cases. For example, in 183.equake, we are now beating the native compiler with the CBE, and we are a lot closer with LLC. I'm now going to play around a bit with the unroll factor and see what effect it really has. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13034 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18Fix a bug: this does not preserve the CFG!Chris Lattner
While we're at it, add support for updating loop information correctly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13033 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18Add a new method, add a check missing that caused a segfault if a loop didn'tChris Lattner
have a canonical indvar git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13032 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18Initial checkin of a simple loop unroller. This pass is extremely basic andChris Lattner
limited. Even in it's extremely simple state (it can only *fully* unroll single basic block loops that execute a constant number of times), it already helps improve performance a LOT on some benchmarks, particularly with the native code generators. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13028 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-18Make the tail duplication threshold accessible from the command line instead ↵Chris Lattner
of hardcoded git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13025 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-17Fix a memory leak. We leaked the vector holding the entries in switch tables.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13023 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-17Add the ability to compute exit values for complex loop using unanalyzableChris Lattner
operations. This allows us to compile this testcase: int main() { int h = 1; do h = 3 * h + 1; while (h <= 256); printf("%d\n", h); return 0; } into this: int %main() { entry: call void %__main( ) %tmp.6 = call int (sbyte*, ...)* %printf( sbyte* getelementptr ([4 x sbyte]* %.str_1, long 0, long 0), int 364 ) ; <int> [#uses=0] ret int 0 } This testcase was taken directly from 256.bzip2, believe it or not. This code is not as general as I would like. Next up is to refactor it a bit to handle more cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13019 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-17If the loop executes a constant number of times, try a bit harder to replaceChris Lattner
exit values. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13018 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-17Add the ability to compute trip counts that are only controlled by constantsChris Lattner
even if the loop is using expressions that we can't compute as a closed-form. This allows us to calculate that this function always returns 55: int test() { double X; int Count = 0; for (X = 100; X > 1; X = sqrt(X), ++Count) /*empty*/; return Count; } And allows us to compute trip counts for loops like: int h = 1; do h = 3 * h + 1; while (h <= 256); (which occurs in bzip2), and for this function, which occurs after inlining and other optimizations: int popcount() { int x = 666; int result = 0; while (x != 0) { result = result + (x & 0x1); x = x >> 1; } return result; } We still cannot compute the exit values of result or h in the two loops above, which means we cannot delete the loop, but we are getting closer. Being able to compute a constant trip count for these two loops will allow us to unroll them completely though. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13017 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-17Fix a HUGE pessimization on X86. The indvars pass was taking thisChris Lattner
(familiar) function: int _strlen(const char *str) { int len = 0; while (*str++) len++; return len; } And transforming it to use a ulong induction variable, because the type of the pointer index was left as a constant long. This is obviously very bad. The fix is to shrink long constants in getelementptr instructions to intptr_t, making the indvars pass insert a uint induction variable, which is much more efficient. Here's the before code for this function: int %_strlen(sbyte* %str) { entry: %tmp.13 = load sbyte* %str ; <sbyte> [#uses=1] %tmp.24 = seteq sbyte %tmp.13, 0 ; <bool> [#uses=1] br bool %tmp.24, label %loopexit, label %no_exit no_exit: ; preds = %entry, %no_exit *** %indvar = phi uint [ %indvar.next, %no_exit ], [ 0, %entry ] ; <uint> [#uses=2] *** %indvar = phi ulong [ %indvar.next, %no_exit ], [ 0, %entry ] ; <ulong> [#uses=2] %indvar1 = cast ulong %indvar to uint ; <uint> [#uses=1] %inc.02.sum = add uint %indvar1, 1 ; <uint> [#uses=1] %inc.0.0 = getelementptr sbyte* %str, uint %inc.02.sum ; <sbyte*> [#uses=1] %tmp.1 = load sbyte* %inc.0.0 ; <sbyte> [#uses=1] %tmp.2 = seteq sbyte %tmp.1, 0 ; <bool> [#uses=1] %indvar.next = add ulong %indvar, 1 ; <ulong> [#uses=1] %indvar.next = add uint %indvar, 1 ; <uint> [#uses=1] br bool %tmp.2, label %loopexit.loopexit, label %no_exit loopexit.loopexit: ; preds = %no_exit %indvar = cast uint %indvar to int ; <int> [#uses=1] %inc.1 = add int %indvar, 1 ; <int> [#uses=1] ret int %inc.1 loopexit: ; preds = %entry ret int 0 } Here's the after code: int %_strlen(sbyte* %str) { entry: %inc.02 = getelementptr sbyte* %str, uint 1 ; <sbyte*> [#uses=1] %tmp.13 = load sbyte* %str ; <sbyte> [#uses=1] %tmp.24 = seteq sbyte %tmp.13, 0 ; <bool> [#uses=1] br bool %tmp.24, label %loopexit, label %no_exit no_exit: ; preds = %entry, %no_exit *** %indvar = phi uint [ %indvar.next, %no_exit ], [ 0, %entry ] ; <uint> [#uses=3] %indvar = cast uint %indvar to int ; <int> [#uses=1] %inc.0.0 = getelementptr sbyte* %inc.02, uint %indvar ; <sbyte*> [#uses=1] %inc.1 = add int %indvar, 1 ; <int> [#uses=1] %tmp.1 = load sbyte* %inc.0.0 ; <sbyte> [#uses=1] %tmp.2 = seteq sbyte %tmp.1, 0 ; <bool> [#uses=1] %indvar.next = add uint %indvar, 1 ; <uint> [#uses=1] br bool %tmp.2, label %loopexit, label %no_exit loopexit: ; preds = %entry, %no_exit %len.0.1 = phi int [ 0, %entry ], [ %inc.1, %no_exit ] ; <int> [#uses=1] ret int %len.0.1 } git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13016 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-17Even if there are not any induction variables in the loop, if we can computeChris Lattner
the trip count for the loop, insert one so that we can canonicalize the exit condition. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13015 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16Add support for evaluation of exp/log/log10/powChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13011 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16Fix some really nasty dominance bugs that were exposed by my patch toChris Lattner
make the verifier more strict. This fixes building zlib git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13002 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16Fix retriving parent Function.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13001 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16Include <cmath> for compatibility with gcc 3.0.x (the system compiler onBrian Gaeke
Debian.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12986 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16Assert if deleting BasicBlock before removing it from Function.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12983 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16Fix some of the strange CBE-only failures that happened last night.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12980 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16Make sure to check for a very bad class of errors: an instructionChris Lattner
that does not dominate all of its users, but is in the same basic block as its users. This class of error is what caused the mysterious CBE only failures last night. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12979 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16Bugpoint was not correctly capturing stderr! This caused it to "find" bugsChris Lattner
that didn't exist, missing the ones that do :( git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12978 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-16Fix Inline/2004-04-15-InlineDeletesCall.llChris Lattner
Basically we were using SimplifyCFG as a huge sledgehammer for a simple optimization. Because simplifycfg does so many things, we can't use it for this purpose. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12977 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-15Fix a bug in the previous checkin: if the exit block is not the same asChris Lattner
the back-edge block, we must check the preincremented value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12968 91177308-0d34-0410-b5e6-96231b3b80d8
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