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2006-07-14eliminate some ugly code, using ConstantExpr::getWithOperands instead.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29149 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-14Hopefully the final attempt at making IndVars preserve LCSSA.Owen Anderson
This should fix PR 831. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29141 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-13Revert this patch temporarily until PR831 is fixed.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29134 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-12Handle instructions in the map, but that map to a null pointer.Chris Lattner
This unbreaks smg2000. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29127 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-12IndVars now (correctly) preserves LCSSA form.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29126 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-12In addition to deleting calls, the inliner can constant fold them as well.Chris Lattner
Handle this case, which doesn't require a new callgraph edge. This fixes a crash compiling MallocBench/gs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29121 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-12Change the callgraph representation to store the callsite along with theChris Lattner
target CG node. This allows the inliner to properly update the callgraph when using the pruning inliner. The pruning inliner may not copy over all call sites from a callee to a caller, so the edges corresponding to those call sites should not be copied over either. This fixes PR827 and Transforms/Inline/2006-07-12-InlinePruneCGUpdate.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29120 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-11Silence a warning produced in assertions-disabled modeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29108 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-11Revert my indvars changes because they were breaking things. Unfortunately thisOwen Anderson
didn't start showing up until after the recent instcombine fixes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29102 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-10Add a comment, and fix a typo that broke the build.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29094 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-10Don't indent the entire function.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29093 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-10Recognize 16-bit bswaps by relaxing overconstrained pattern.Chris Lattner
This implements Transforms/InstCombine/bswap.ll:test[34]. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29087 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-10Make instcombine not remove Phi nodes when LCSSA is live.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29083 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-09Fix typo in the comment.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29078 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-09Add a fix for an issue where LCSSA would fail to insert undef's in some cornerOwen Anderson
cases. Ideally, this issue will go away in the future as LCSSA gets smarter about which Phi nodes it inserts. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29076 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-07Fix PR820 and Transforms/GlobalOpt/2006-07-07-InlineAsmCrash.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29071 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-28Use hidden visibility to make symbols in an anonymous namespace getChris Lattner
dropped. This shrinks libllvmgcc.dylib another 67K git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28975 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-28Shrink libllvmgcc.dylib by another 23KChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28972 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-28Switch to a very conservative heuristic for determining when loop-unswitchingOwen Anderson
will be profitable. This is mainly to remove some cases where excessive unswitching would result in long compile times and/or huge generated code. Once someone comes up with a better heuristic that avoids these cases, this should be switched out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28962 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-28Fix Transforms/InstCombine/2006-06-28-infloop.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28961 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-28Don't unswitch really large loops even if they are mostly filled with emptyChris Lattner
blocks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28959 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-28Catch more function pointer casting problemsAndrew Lenharth
Remove the Function pointer cast in these calls, converting it to a cast of argument. %tmp60 = tail call int cast (int (ulong)* %str to int (int)*)( int 10 ) %tmp60 = tail call int cast (int (ulong)* %str to int (int)*)( uint %tmp51 ) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28953 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-27Fix for 2006-06-27-DeadSwitchCase.llOwen Anderson
Be more careful when updating Phi nodes after eliminating dead switch cases. Fix proposed by Chris. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28947 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-27Fix Transforms/DeadArgElim/2006-06-27-struct-ret.ll. -deadargelim should notChris Lattner
remove the struct return argument of a csret function, even if it is obviously dead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28943 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-27De-pessimize the handling of LCSSA Phi nodes in IndVarSimplify. Hopefully thisOwen Anderson
will make Shootout-C/nestedloop faster. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28924 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-26random code cleanups, no functionality changeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28914 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-26Make LoopUnswitch able to unswitch loops with live-out values by taking ↵Owen Anderson
advantage of LCSSA. This results several times the number of unswitchings occurring on tests such and timberwolfmc, unix-tbl, and ldecod. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28912 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-17Fix IndVarsSimplify/2006-06-16-Indvar-LCSSA-Crash.ll, a case where aChris Lattner
"LCSSA" phi node causes indvars to break dominance properties. This fixes causes indvars to avoid inserting aggressive code in this case, instead indvars should be fixed to be more aggressive in the face of lcssa phi's. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28850 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-16Add missing casts. This fixed some regressions.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28834 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-16More libcall transformations:Evan Cheng
printf("%s\n", str) -> puts(str) printf("%c", c) -> putchar(c) Also fixed fprintf(file, "%c", c) -> fputc(c, file) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28815 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-16Simplify fprintf(file, "%s", str) to fputs(str, file).Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28814 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-15Implement Transforms/InstCombine/bswap.ll, turning common shift/and/or bswapChris Lattner
idioms into bswap intrinsics. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28803 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-14Fix Transforms/LoopUnswitch/2006-06-13-SingleEntryPHI.ll, a loop unswitchChris Lattner
bug exposed by the recent lcssa work. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28779 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-14Use the PotDoms map to memoize 'dominating value' lookup. With this patch,Chris Lattner
LCSSA is still the slowest pass when gccas'ing 252.eon, but now it only takes 39s instead of 289s. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28776 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-13Fix another instance where PHI nodes need special treatment.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28774 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-13Fix a bug that was causing major slowdowns in povray. This was due to LCSSAOwen Anderson
not handling PHI nodes correctly when determining if a value was live-out. This patch reduces the number of detected live-out variables in the testcase from 6565 to 485. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28771 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-12Reapply my 6/9 changes. The bug Evan saw no longer occurs.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28759 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-12Fix an infinite loop on Transforms/SimplifyCFG/2006-06-12-InfLoop.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28758 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-12Fix for 2006-06-26-MultipleExitsSingleBlock.Owen Anderson
If a single exit block has multiple predecessors within the loop, it will appear in the exit blocks list more than once. LCSSA needs to take that into account so that it doesn't double process that exit block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28750 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-11Re-commit the safe parts of my 6/9 patch. Still working on fixing the ↵Owen Anderson
unsafe parts. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28748 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-11Back out Owen's 6/9 changes. They broke ↵Evan Cheng
MultiSource/Benchmarks/Prolangs-C/bison (and perhaps others). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28747 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-09Add LCSSA as a requirement for LoopUnswitch, and assert that LoopUnswitch ↵Owen Anderson
preserves LCSSA. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28739 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-09Make Loop able to verify that it is in LCSSA-form, and have the LCSSA pass ↵Owen Anderson
assert on this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28738 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-09RewriteExpr, either the new PHI node of induction variable or theEvan Cheng
post-increment value, should be first cast to the appropriated type (to the type of the common expr). Otherwise, the rewrite of a use based on (common + iv) may end up with an incorrect type. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28735 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-08Update some comments, and expose LCSSAID in preparation for having other passesOwen Anderson
require LCSSA. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28734 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-07Fix a spello in a comment.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28714 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-06Fix a bug in a recent patch. This fixes UnitTests/Vector/Altivec/casts.c onChris Lattner
PPC/altivec git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28698 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-06Fix some formatting, and use inLoop() when appropriate.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28694 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-06Stop a memory leak, and update some comments.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28693 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-04Some more clean-up, and squash an IDF-Phi related bug.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28680 91177308-0d34-0410-b5e6-96231b3b80d8
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