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2004-11-22Do not count debugger intrinsics in size estimation.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18110 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-22Ignore debugger intrinsics when doing inlining size computations.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18109 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-22Do not consider debug intrinsics in the size computations for loop unrolling.Chris Lattner
Patch contributed by Michael McCracken! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18108 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-20Allow constructor parameter to override aggregating args; fix spacingMisha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18028 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-19Fix the exposed prototype for the lower packed pass, thanks toChris Lattner
Morten Ofstad. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17996 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-19CPR is dead.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17992 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-18Delete stoppoints that occur for the same source line.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17970 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-18Check in hook that I forgotChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17956 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-16Do not delete dead invoke instructions!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17897 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-15Remove unused variable for compilation by VC++.Reid Spencer
Patch contributed by Morten Ofstad. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17830 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-15Minor cleanups. There is no reason for SCCP to derive from instvisitor anymore.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17825 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-15Count more accuratelyChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17824 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-15Quiet warnings on the persephone testerChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17821 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-15Two minor improvements:Chris Lattner
1. Speedup getValueState by having it not consider Arguments. It's better to just add them before we start SCCP'ing. 2. SCCP can delete the contents of dead blocks. No really, it's ok! This reduces the size of the IR for subsequent passes, even though simplifycfg would do the same job. In practice, simplifycfg does not run until much later than sccp in gccas git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17820 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-15rename InstValue to LatticeValue, as it holds for more than instructions.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17818 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-15Substantially refactor the SCCP class into an SCCP pass and an SCCPSolverChris Lattner
class. The only changes are minor: * Do not try to SCCP instructions that return void in the rewrite loop. This is silly and fool hardy, wasting a map lookup and adding an entry to the map which is never used. * If we decide something has an undefined value, rewrite it to undef, potentially leading to further simplications. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17816 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-14If a global is just loaded and restored, realize that it is not changingChris Lattner
value. This allows us to turn more globals into constants and eliminate them. This patch implements GlobalOpt/load-store-global.llx. Note that this patch speeds up 255.vortex from: Output/255.vortex.out-cbe.time:program 7.640000 Output/255.vortex.out-llc.time:program 9.810000 to: Output/255.vortex.out-cbe.time:program 7.250000 Output/255.vortex.out-llc.time:program 9.490000 Which isn't bad at all! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17746 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-14This optimization makes MANY phi nodes that all have the same incoming value.Chris Lattner
If this happens, detect it early instead of relying on instcombine to notice it later. This can be a big speedup, because PHI nodes can have many incoming values. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17741 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-14Implement instcombine/phi.ll:test6 - pulling operations through PHI nodes.Chris Lattner
This exposes subsequent optimization possiblities and reduces code size. This triggers 1423 times in spec. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17740 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-14Transform this:Chris Lattner
%X = alloca ... %Y = alloca ... X == Y into false. This allows us to simplify some stuff in eon (and probably many other C++ programs) where operator= was checking for self assignment. Folding this allows us to SROA several additional structs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17735 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-14Remove note to selfChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17734 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-14If a function always returns a constant, replace all calls sites with thatChris Lattner
constant value. This makes the return value dead and allows for simplification in the caller. This implements IPConstantProp/return-constant.ll This triggers several dozen times throughout SPEC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17730 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-14Teach SROA how to promote an array index that is variable, if the dimensionChris Lattner
of the array is just two. This occurs 8 times in gcc, 6 times in crafty, and 12 times in 099.go. This implements ScalarRepl/sroa_two.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17727 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-14Rearrange some code, no functionality changes.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17724 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-13Remove debugging codeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17719 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-13Argument promotion transforms functions to unconditionally load theirChris Lattner
argument pointers. This is only valid to do if the function already unconditionally loaded an argument or if the pointer passed in is known to be valid. Make sure to do the required checks. This fixed ArgumentPromotion/control-flow.ll and the Burg program. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17718 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-13Simplify handling of shifts to be the same as we do for adds. Add supportChris Lattner
for (X * C1) + (X * C2) (where * can be mul or shl), allowing us to fold: Y+Y+Y+Y+Y+Y+Y+Y into %tmp.8 = shl long %Y, ubyte 3 ; <long> [#uses=1] instead of %tmp.4 = shl long %Y, ubyte 2 ; <long> [#uses=1] %tmp.12 = shl long %Y, ubyte 2 ; <long> [#uses=1] %tmp.8 = add long %tmp.4, %tmp.12 ; <long> [#uses=1] This implements add.ll:test25 Also add support for (X*C1)-(X*C2) -> X*(C1-C2), implementing sub.ll:test18 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17704 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-13Fold:Chris Lattner
(X + (X << C2)) --> X * ((1 << C2) + 1) ((X << C2) + X) --> X * ((1 << C2) + 1) This means that we now canonicalize "Y+Y+Y" into: %tmp.2 = mul long %Y, 3 ; <long> [#uses=1] instead of: %tmp.10 = shl long %Y, ubyte 1 ; <long> [#uses=1] %tmp.6 = add long %Y, %tmp.10 ; <long> [#uses=1] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17701 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-13Lazily create the abort message, so only translation units that use unwindChris Lattner
will actually get it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17700 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-13Fix: CodeExtractor/2004-11-12-InvokeExtract.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17699 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-12Fix a bug where the code extractor would get a bit confused handling invokeChris Lattner
instructions, setting DefBlock to a block it did not have dom info for. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17697 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-12Simplify handling of constant initializersChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17696 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-11Actually, leave the check in. This prevents us from counting dead argumentsChris Lattner
as IPCP opportunities. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17680 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-11Fix bug: IPConstantProp/deadarg.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17679 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-10Make IP Constant prop more aggressive about handling self recursive calls.Chris Lattner
This implements IPConstantProp/recursion.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17666 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-09Do not let dead constant expressions hanging off of functions prevent IPCP.Chris Lattner
This allows to elimination of a bunch of global pool descriptor args from programs being pool allocated (and is also generally useful!) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17657 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-09Change this back so that I get stable numbers to reflect the change from theChris Lattner
nightly testers git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17646 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-09Fix bug: 2004-11-08-FreeUseCrash.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17642 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-07VERY large functions that are only called from one place are not reallyChris Lattner
exciting to inline. Only inline medium or small sized functions with a single call site. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17588 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-07This is V9 specific, move it there.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17545 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-05Remove dead varsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17482 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-05Fix some warnings on VC++Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17481 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-02* Rearrange code slightlyChris Lattner
* Disable broken transforms for simplifying (setcc (cast X to larger), CI) where CC is not != or == git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17422 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-01Speed up the tail duplication pass on the testcase below from 68.2s to 1.23s:Chris Lattner
#define CL0(a) case a: f(); goto c; #define CL1(a) CL0(a##0) CL0(a##1) CL0(a##2) CL0(a##3) CL0(a##4) CL0(a##5) \ CL0(a##6) CL0(a##7) CL0(a##8) CL0(a##9) #define CL2(a) CL1(a##0) CL1(a##1) CL1(a##2) CL1(a##3) CL1(a##4) CL1(a##5) \ CL1(a##6) CL1(a##7) CL1(a##8) CL1(a##9) #define CL3(a) CL2(a##0) CL2(a##1) CL2(a##2) CL2(a##3) CL2(a##4) CL2(a##5) \ CL2(a##6) CL2(a##7) CL2(a##8) CL2(a##9) #define CL4(a) CL3(a##0) CL3(a##1) CL3(a##2) CL3(a##3) CL3(a##4) CL3(a##5) \ CL3(a##6) CL3(a##7) CL3(a##8) CL3(a##9) void f(); void a() { int b; c: switch (b) { CL4(1) } } This comes from GCC PR 15524 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17390 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-01Do not compute the predecessor list for a block unless we need it.Chris Lattner
This speeds up simplifycfg on this program, from 44.87s to 0.29s (with a profiled build): #define CL0(a) case a: goto c; #define CL1(a) CL0(a##0) CL0(a##1) CL0(a##2) CL0(a##3) CL0(a##4) CL0(a##5) \ CL0(a##6) CL0(a##7) CL0(a##8) CL0(a##9) #define CL2(a) CL1(a##0) CL1(a##1) CL1(a##2) CL1(a##3) CL1(a##4) CL1(a##5) \ CL1(a##6) CL1(a##7) CL1(a##8) CL1(a##9) #define CL3(a) CL2(a##0) CL2(a##1) CL2(a##2) CL2(a##3) CL2(a##4) CL2(a##5) \ CL2(a##6) CL2(a##7) CL2(a##8) CL2(a##9) #define CL4(a) CL3(a##0) CL3(a##1) CL3(a##2) CL3(a##3) CL3(a##4) CL3(a##5) \ CL3(a##6) CL3(a##7) CL3(a##8) CL3(a##9) void f(); void a() { int b; c: switch (b) { CL4(1) } } This testcase is contrived to expose N^2 behavior, but this patch should speedup simplifycfg on any programs that use large switch statements. This testcase comes from GCC PR17895. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17389 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-27Change Library Names Not To Conflict With Others When InstalledReid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17286 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-27Convert 'struct' to 'class' in various places to adhere to the coding standardsChris Lattner
and work better with VC++. Patch contributed by Morten Ofstad! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17281 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-27Hrm, this code was severely botched. As it turns out, this patch:Chris Lattner
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20041018/019708.html exposed ANOTHER latent bug in this xform, which caused Prolangs-C/bison to fill the zion nightly tester disk up and make the tester barf. This is obviously not a good thing, so lets fix this bug shall we? :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17276 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-27Initialize with the correct constant typeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17270 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-25Fix compatibility with MSVC, patch by Morten OfstadChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17218 91177308-0d34-0410-b5e6-96231b3b80d8
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