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2010-06-19Add a TODO comment.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106397 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-19Include the use kind along with the expression in the key of theDan Gohman
use sharing map. The reconcileNewOffset logic already forces a separate use if the kinds differ, so incorporating the kind in the key means we can track more sharing opportunities. More sharing means fewer total uses to track, which means smaller problem sizes, which means the conservative throttles don't kick in as often. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106396 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-19Don't include things in anonymous namespaces that don't need it.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106395 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-18Disable indvars on loops when LoopSimplify form is not available.Dan Gohman
This fixes PR7333. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106267 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-16remove trailing whitespaceJim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106164 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-16Make sure that simplify libcalls does not replace a call with one callingRafael Espindola
convention with a new call with a different calling convention. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106134 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-16simplify-libcalls: fold strncmp(x, y, 1) -> memcmp(x, y, 1)Benjamin Kramer
The memcmp will be optimized further and even the pathological case 'strstr(x, "x") == x' generates optimal code now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106097 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-15simplify-libcalls: fold strstr(a, b) == a -> strncmp(a, b, strlen(b)) == 0Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106047 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-14jump threading can't split a critical edge from an indirectbr. ThisChris Lattner
fixes PR7356. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105950 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-13SimplifyCFG: don't turn volatile stores to null/undef into unreachable. ↵Benjamin Kramer
Fixes PR7369. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105914 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-09Pulled CodeMetrics out of InlineCost.h and made it a bit more general, so it ↵Kenneth Uildriks
can be reused from PartialSpecializationCost git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105725 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-07Make bugpoint dead-argument-hacking actually work, and actually test it.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105551 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-05Partial specialization was not checking the callsite to make sure it was ↵Kenneth Uildriks
using the same constants as the specialization, leading to calls to the wrong specialization. Patch by Takumi Nakamura\! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105528 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-04Don't track users of undef values; they aren't interesting forDan Gohman
register pressure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105501 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-04Copy location info for current function argument from dbg.declare if ↵Devang Patel
respective store instruction does not have any location info. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105490 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-01Remove unused codeJim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105293 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-01fix think-oJim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105291 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-01Simplify things a bit more. Fix prototype to use SmallVectorImpl andJim Grosbach
change a few SmallVectors to vanilla C arrays. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105289 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-01mirror of r105280 changes for LowerInvoke, which uses the same basic logic hereJim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105281 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-01Use SmallVector instead of std::vector.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105279 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-31Fix PR7272: when inlining through a callsite with byval arguments,Duncan Sands
the newly created allocas may be used by inlined calls, so these need to have their tail call flags cleared. Fixes PR7272. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105255 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-31Avoid swap when a copy suffices.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105220 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-31The memcpy intrinsic only takes i8* for %src and %dst, so cast them to thatNick Lewycky
first. Fixes PR7265. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105206 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-28Move FindAvailableLoadedValue isSafeToLoadUnconditionally out ofDan Gohman
lib/Transforms/Utils and into lib/Analysis so that Analysis passes can use them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104949 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-28Teach instcombine to promote alloca array sizes.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104945 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-28Fix instcombine's handling of alloca to accept non-i32 types.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104935 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-28Fix typo.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104914 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-28Fix typo.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104913 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-27Do not drop location info for inlined function args.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104884 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-27Teach instCombine to remove malloc+free if malloc's only uses are comparisonsDuncan Sands
to null. Patch by Matti Niemenmaa. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104871 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-26Kill unneeded SExt.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104692 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-25Properly promote operands when optimizing a single-character memcmp.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104648 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-25Fix a missing newline in debug output.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104644 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20DominatorTree.getNode can return null for unreachable blocks.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104290 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Minor code cleanups.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104287 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Make Solve check its own post-condition, to reduce clutter in theDan Gohman
top-level LSRInstance logic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104278 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Add comments.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104276 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20More code cleanups. Use iterators instead of indices when indicesDan Gohman
aren't needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104273 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Fix OptimizeShadowIV to set Changed. Change OptimizeLoopTermCond to setDan Gohman
Changed directly instead of using a return value. Rename FilterOutUndesirableDedicatedRegisters's Changed variable to distinguish it from LSRInstance's Changed member. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104269 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Add some comments.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104268 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Simplify this code. Don't do a DomTreeNode lookup for each visited block.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104267 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Minor code cleanups.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104263 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20When canonicalizing icmp operand order to put the loop invariantDan Gohman
operand on the left, the interesting operand is on the right. This fixes a bug where LSR was failing to recognize ICmpZero uses, which led it to be unable to reverse the induction variable in the attached testcase. Delete test/CodeGen/X86/stack-color-with-reg-2.ll, because its test is extremely fragile and hard to meaningfully update. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104262 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Set Changed to true when canonicalizing ICmp operand order; even thoughDan Gohman
it isn't a very interesting change, it's a change nonetheless. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104260 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Strip llvm.dbg.lv also.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104236 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Rename a variable to avoid shadowing.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104234 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Minor code simplification.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104232 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Move the code for deleting BaseRegs and LSRUses into helper functions,Dan Gohman
and fix a bug that valgrind noticed where the code would std::swap an element with itself. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104225 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-19Teach LSR how to cope better with unrolled loops on targets whereDan Gohman
the addressing modes don't make this trivially easy. This allows it to avoid falling into the less precise heuristics in more cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104186 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-18Add a comment.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104089 91177308-0d34-0410-b5e6-96231b3b80d8