aboutsummaryrefslogtreecommitdiffstats
path: root/test/Transforms/JumpThreading/basic.ll
Commit message (Collapse)AuthorAgeFilesLines
* Update Transforms tests to use CHECK-LABEL for easier debugging. No ↵Stephen Lin2013-07-141-15/+15
| | | | | | | | | | | | | | | | | | | | | | | functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc" $NAME; then TEMP=`mktemp -t temp` cp $NAME $TEMP sed -n "s/^define [^@]*@\([A-Za-z0-9_]*\)(.*$/\1/p" < $NAME | \ while read FUNC; do sed -i '' "s/;\(.*\)\([A-Za-z0-9_]*\):\( *\)@$FUNC\([( ]*\)\$/;\1\2-LABEL:\3@$FUNC(/g" $TEMP done mv $TEMP $NAME fi done git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186268 91177308-0d34-0410-b5e6-96231b3b80d8
* Use references to attribute groups on the call/invoke instructions.Bill Wendling2013-02-221-2/+4
| | | | | | | | Listing all of the attributes for the callee of a call/invoke instruction is way too much and makes the IR unreadable. Use references to attributes instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175877 91177308-0d34-0410-b5e6-96231b3b80d8
* Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ↵Dmitri Gribenko2013-01-011-1/+1
| | | | | | | | | | | ModuleID This is done to avoid odd test failures, like the one fixed in r171243. My previous regex was not good enough to find these. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171343 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a new attribute, 'noduplicate'. If a function contains a noduplicate ↵James Molloy2012-12-201-0/+36
| | | | | | | | | | call, the call cannot be duplicated - Jump threading, loop unrolling, loop unswitching, and loop rotation are inhibited if they would duplicate the call. Similarly inlining of the function is inhibited, if that would duplicate the call (in particular inlining is still allowed when there is only one callsite and the function has internal linkage). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170704 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove dead option from tests.Owen Anderson2010-09-141-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113855 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a test for the duplicated-conditional situation illutrated by PR5652.Owen Anderson2010-08-311-0/+24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112621 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a micro-test for the transforms I added to JumpThreading.Owen Anderson2010-08-311-0/+30
| | | | | | | | | | | | | I have not been able to find a way to test each in isolation, for a few reasons: 1) The ability to look-through non-i1 BinaryOperator's requires the ability to look through non-constant ICmps in order for it to ever trigger. 2) The ability to do LVI-powered PHI value determination only matters in cases that ProcessBranchOnPHI can't handle. Since it already handles all the cases without other instructions in the def-use chain between the PHI and the branch, it requires the ability to look through ICmps and/or BinaryOperators as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112611 91177308-0d34-0410-b5e6-96231b3b80d8
* Use LVI to eliminate conditional branches where we've tested a related ↵Owen Anderson2010-08-271-4/+10
| | | | | | | | | condition previously. Update tests for this change. This fixes PR5652. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112270 91177308-0d34-0410-b5e6-96231b3b80d8
* 1) Use the new SimplifyInstructionsInBlock routine instead of the copyChris Lattner2010-01-121-6/+1
| | | | | | | | | | | | | in JT. 2) When cloning blocks for PHI or xor conditions, use instsimplify to simplify the code as we go. This allows us to squish common cases early in JT which opens up opportunities for subsequent iterations, and allows it to completely simplify the testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93253 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach jump threading to duplicate small blocks when the branchChris Lattner2010-01-121-5/+18
| | | | | | | | | | | | | | | | | | | | | condition is a xor with a phi node. This eliminates nonsense like this from 176.gcc in several places: LBB166_84: testl %eax, %eax - setne %al - xorb %cl, %al - notb %al - testb $1, %al - je LBB166_85 + je LBB166_69 + jmp LBB166_85 This is rdar://7391699 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93221 91177308-0d34-0410-b5e6-96231b3b80d8
* typoGabor Greif2009-11-121-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86980 91177308-0d34-0410-b5e6-96231b3b80d8
* use getPredicateOnEdge to fold comparisons through PHI nodes,Chris Lattner2009-11-121-0/+32
| | | | | | | | which implements GCC PR18046. This also gets us 360 more jump threads on 176.gcc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86953 91177308-0d34-0410-b5e6-96231b3b80d8
* should not commit when distracted.Chris Lattner2009-11-121-4/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86929 91177308-0d34-0410-b5e6-96231b3b80d8
* We now thread some impossible condition information with LVI.Chris Lattner2009-11-121-2/+30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86927 91177308-0d34-0410-b5e6-96231b3b80d8
* with the new code we can thread non-instruction values. ThisChris Lattner2009-11-121-2/+40
| | | | | | | allows us to handle the test10 testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86924 91177308-0d34-0410-b5e6-96231b3b80d8
* move some stuff into DEBUG's and turn on lazy-value-info forChris Lattner2009-11-121-1/+1
| | | | | | | the basic.ll testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86918 91177308-0d34-0410-b5e6-96231b3b80d8
* oops, didn't mean to commit this, no harm, but add a todoops, didn't mean to ↵Chris Lattner2009-11-111-0/+1
| | | | | | commit this, no harm, but add a todoo git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86768 91177308-0d34-0410-b5e6-96231b3b80d8
* Stub out a new lazy value info pass, which will eventuallyChris Lattner2009-11-111-0/+26
| | | | | | | vend value constraint information to the optimizer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86767 91177308-0d34-0410-b5e6-96231b3b80d8
* implement a TODO by teaching jump threading about "xor x, 1".Chris Lattner2009-11-101-0/+39
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86739 91177308-0d34-0410-b5e6-96231b3b80d8
* Make jump threading eliminate blocks that just contain phi nodes,Chris Lattner2009-11-101-3/+13
| | | | | | | | | debug intrinsics, and an unconditional branch when possible. This reuses the TryToSimplifyUncondBranchFromEmptyBlock function split out of simplifycfg. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86722 91177308-0d34-0410-b5e6-96231b3b80d8
* make jump threading recursively simplify expressions instead of doing it Chris Lattner2009-11-101-0/+32
| | | | | | | | | | | | | | | | | | | | | just one level deep. On the testcase we go from getting this: F1: ; preds = %T2 %F = and i1 true, %cond ; <i1> [#uses=1] br i1 %F, label %X, label %Y to a fully threaded: F1: ; preds = %T2 br label %Y This changes gets us to the point where we're forming (too many) switch instructions on doug's strswitch testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86646 91177308-0d34-0410-b5e6-96231b3b80d8
* reapply 86289, 86278, 86270, 86267, 86266 & 86264 plus a fixChris Lattner2009-11-071-0/+31
| | | | | | | | | | | (making pred factoring only happen if threading is guaranteed to be successful). This now survives an X86-64 bootstrap of llvm-gcc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86355 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert following patches to fix llvmgcc bootstrap.Devang Patel2009-11-071-31/+0
| | | | | | | | | 86289, 86278, 86270, 86267, 86266 & 86264 Chris, please take a look. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86321 91177308-0d34-0410-b5e6-96231b3b80d8
* Extend jump threading to support much more general threadingChris Lattner2009-11-061-0/+31
| | | | | | | | | | | | | | | | | | | | | | | predicates. This allows us to jump thread things like: _ZN12StringSwitchI5ColorE4CaseILj7EEERS1_RAT__KcRKS0_.exit119: %tmp1.i24166 = phi i8 [ 1, %bb5.i117 ], [ %tmp1.i24165, %_Z....exit ], [ %tmp1.i24165, %bb4.i114 ] %toBoolnot.i87 = icmp eq i8 %tmp1.i24166, 0 ; <i1> [#uses=1] %tmp4.i90 = icmp eq i32 %tmp2.i, 6 ; <i1> [#uses=1] %or.cond173 = and i1 %toBoolnot.i87, %tmp4.i90 ; <i1> [#uses=1] br i1 %or.cond173, label %bb4.i96, label %_ZN12... Where it is "obvious" that when coming from %bb5.i117 that the 'and' is always false. This triggers a surprisingly high number of times in the testsuite, and gets us closer to generating good code for doug's strswitch testcase. This also make a bunch of other code in jump threading redundant, I'll rip out in the next patch. This survived an enable-checking llvm-gcc bootstrap. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86264 91177308-0d34-0410-b5e6-96231b3b80d8
* when folding duplicate conditions, delete the Chris Lattner2009-10-111-0/+33
| | | | | | | now-probably-dead instruction tree feeding it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83778 91177308-0d34-0410-b5e6-96231b3b80d8
* implement a transformation in jump threading that is currentlyChris Lattner2009-10-111-0/+34
| | | | | | | | | | | done by condprop, but do it in a much more general form. The basic idea is that we can do a limited form of tail duplication in the case when we have a branch on a phi. Moving the branch up in to the predecessor block makes instruction selection much easier and encourages chained jump threadings. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83759 91177308-0d34-0410-b5e6-96231b3b80d8
* make jump threading on a phi with undef inputs happen.Chris Lattner2009-10-111-2/+32
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83754 91177308-0d34-0410-b5e6-96231b3b80d8
* merge two tests.Chris Lattner2009-10-111-1/+19
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83751 91177308-0d34-0410-b5e6-96231b3b80d8
* simplify some run lines, convert a test to filecheck.Chris Lattner2009-10-111-2/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83750 91177308-0d34-0410-b5e6-96231b3b80d8
* Change tests from "opt %s" to "opt < %s" so that opt doesn't see theDan Gohman2009-09-111-2/+2
| | | | | | | | | input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
* Use opt -S instead of piping bitcode output through llvm-dis.Dan Gohman2009-09-081-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81257 91177308-0d34-0410-b5e6-96231b3b80d8
* Change these tests to feed the assembly files to opt directly, insteadDan Gohman2009-09-081-2/+2
| | | | | | | of using llvm-as, now that opt supports this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81226 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach jump threading some more simple tricks:Chris Lattner2008-12-031-0/+22
| | | | | | | | | | | | | | | | | | 1) have it fold "br undef", which does occur with surprising frequency as jump threading iterates. 2) teach j-t to delete dead blocks. This removes the successor edges, reducing the in-edges of other blocks, allowing recursive simplification. 3) Fold things like: br COND, BBX, BBY BBX: br COND, BBZ, BBW which also happens because jump threading iterates. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60470 91177308-0d34-0410-b5e6-96231b3b80d8
* add a basic testcase.Chris Lattner2008-04-221-0/+31
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50093 91177308-0d34-0410-b5e6-96231b3b80d8
generated by cgit v1.1 at 2025-01-07 05:55:09 +0000