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* another fix for PR3354Chris Lattner2009-01-201-1/+12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62561 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a dagcombine to not generate loads of non-round integer types,Dan Gohman2009-01-201-0/+14
| | | | | | | | as its comment says, even in the case where it will be generating extending loads. This fixes PR3216. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62557 91177308-0d34-0410-b5e6-96231b3b80d8
* Make linear scan's trivial coalescer slightly more aggressive.Evan Cheng2009-01-201-0/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62547 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a problem exposed by PR3354: simplifycfg was making a potentiallyChris Lattner2009-01-191-0/+20
| | | | | | | trapping instruction be executed unconditionally. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62541 91177308-0d34-0410-b5e6-96231b3b80d8
* Move & restructure test per review.Dale Johannesen2009-01-191-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62538 91177308-0d34-0410-b5e6-96231b3b80d8
* convert this to an unfoldable potentially trapping constant expr.Chris Lattner2009-01-191-2/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62536 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix SelectionDAG::ReplaceAllUsesWith to behave correctly whenDan Gohman2009-01-191-0/+8
| | | | | | | | | | | | | | uses are added to the From node while it is processing From's use list, because of automatic local CSE. The fix is to avoid visiting any new uses. Fix a few places in the DAGCombiner that assumed that after a RAUW call, the From node has no users and may be deleted. This fixes PR3018. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62533 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR3353, infinitely jump threading an infinite loop make from switches.Chris Lattner2009-01-191-0/+21
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62529 91177308-0d34-0410-b5e6-96231b3b80d8
* compile-time fmod was done incorrectly. PR 3316.Dale Johannesen2009-01-191-0/+77
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62528 91177308-0d34-0410-b5e6-96231b3b80d8
* Verify Intrinsic::dbg_declare. Devang Patel2009-01-192-10/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62526 91177308-0d34-0410-b5e6-96231b3b80d8
* DIVREM isel deficiency: If sign bit is known zero, zero out DX/EDX/RDX ↵Evan Cheng2009-01-191-0/+7
| | | | | | instead of sign extending the low part (in AX/EAX/RAX) into it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62519 91177308-0d34-0410-b5e6-96231b3b80d8
* Port this test from dejagnu to unit testing.Nick Lewycky2009-01-191-30/+0
| | | | | | | | | | The way this worked before was to test APInt by running "lli -force-interpreter=true" knowing the lli uses APInt under the hood to store its values. Now, we test APInt directly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62514 91177308-0d34-0410-b5e6-96231b3b80d8
* Temporarily revert r62487. It's causing this error during a release bootstrap ofBill Wendling2009-01-191-0/+1
| | | | | | | | | | | | | | | | | | llvm-gcc. Most likely, it's miscompiling one of the "gen*" programs: /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./prev-gcc/xgcc -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./prev-gcc/ -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.6.0/bin/ -c -g -O2 -mdynamic-no-pic -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -mdynamic-no-pic -DHAVE_CONFIG_H -DGENERATOR_FILE -I. -Ibuild -I../../llvm-gcc.src/gcc -I../../llvm-gcc.src/gcc/build -I../../llvm-gcc.src/gcc/../include -I./../intl -I../../llvm-gcc.src/gcc/../libcpp/include -I../../llvm-gcc.src/gcc/../libdecnumber -I../libdecnumber -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/include -DENABLE_LLVM -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/../llvm.src/include -D_DEBUG -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -o build/gencondmd.o build/gencondmd.c ../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected '}' before ')' token ../../llvm-gcc.src/gcc/config/i386/mmx.md:926: warning: excess elements in struct initializer ../../llvm-gcc.src/gcc/config/i386/mmx.md:926: warning: (near initialization for 'insn_conditions[4]') ../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected '}' before ')' token ../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected ',' or ';' before ')' token ../../llvm-gcc.src/gcc/config/i386/mmx.md:927: error: expected identifier or '(' before ',' token ../../llvm-gcc.src/gcc/config/i386/sse.md:3458: error: expected identifier or '(' before ',' token ... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62506 91177308-0d34-0410-b5e6-96231b3b80d8
* Now not UINT_TO_FP is legal (it's marked custom), dag combiner won'tEvan Cheng2009-01-191-0/+1
| | | | | | | optimize it to a SINT_TO_FP when the sign bit is known zero. X86 isel should perform the optimization itself. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62504 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR3016, a bug which can occur do to an invalid assumption:Chris Lattner2009-01-191-0/+30
| | | | | | | | | | we assumed a CFG structure that would be valid when all code in the function is reachable, but not all code is necessarily reachable. Do a simple, but horrible, CFG walk to check for this case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62487 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix rdar://6505632, an llc crash on 483.xalancbmkChris Lattner2009-01-181-0/+36
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62470 91177308-0d34-0410-b5e6-96231b3b80d8
* Forgot this in the previous checkin: fopen now has nocapture, realloc isNick Lewycky2009-01-181-2/+2
| | | | | | | supposed to take two arguments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62457 91177308-0d34-0410-b5e6-96231b3b80d8
* Testcase for last commit.Bill Wendling2009-01-171-0/+31
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62418 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix MatchAddress bug that's preventing negative displacement from being ↵Evan Cheng2009-01-172-1/+19
| | | | | | folded in 64-bit mode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62413 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify extract element of a scalar to vector.Mon P Wang2009-01-171-0/+13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62383 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PPC ISD::Declare isel and eliminate the need for ↵Evan Cheng2009-01-161-0/+19
| | | | | | PPCTargetLowering::LowerGlobalAddress to check if isVerifiedDebugInfoDesc() is true. Given the recent changes, it would falsely return true for a lot of GlobalAddressSDNode's. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62373 91177308-0d34-0410-b5e6-96231b3b80d8
* Disable the post-RA scheduler on this test, since it uses aDan Gohman2009-01-161-1/+2
| | | | | | | | simple %prcontext which doesn't find what it's looking for if the scheduler has rearranged the instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62363 91177308-0d34-0410-b5e6-96231b3b80d8
* CreateVirtualRegisters does trivial copy coalescing. If a node def is used ↵Evan Cheng2009-01-161-0/+50
| | | | | | by a single CopyToReg, it reuses the virtual register assigned to the CopyToReg. This won't work for SDNode that is a clone or is itself cloned. Disable this optimization for those nodes or it can end up with non-SSA machine instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62356 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR3335 by not turning a store to one address space into a store to another.Chris Lattner2009-01-161-0/+11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62351 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for non-zero __builtin_return_address values on X86.Bill Wendling2009-01-161-0/+22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62338 91177308-0d34-0410-b5e6-96231b3b80d8
* This is now passing.Evan Cheng2009-01-161-1/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62308 91177308-0d34-0410-b5e6-96231b3b80d8
* Clean up previous cast optimization a bit. Also make zext elimination a bit ↵Evan Cheng2009-01-161-0/+7
| | | | | | more aggressive: if it's not necessary to emit an AND (i.e. high bits are already zero), it's profitable to evaluate the operand at a different type. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62297 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not stumble over forward declared struct member. Devang Patel2009-01-161-0/+30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62288 91177308-0d34-0410-b5e6-96231b3b80d8
* Validate dbg_* intrinsics before lowering them.Devang Patel2009-01-151-0/+15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62286 91177308-0d34-0410-b5e6-96231b3b80d8
* Added missing support to widen an operand from a bit convert.Mon P Wang2009-01-151-0/+10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62285 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix Alpha test and support for private linkage.Rafael Espindola2009-01-151-5/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62282 91177308-0d34-0410-b5e6-96231b3b80d8
* Expand insert/extract of a <4 x i32> with a variable index.Mon P Wang2009-01-151-0/+15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62281 91177308-0d34-0410-b5e6-96231b3b80d8
* Add the private linkage.Rafael Espindola2009-01-1510-0/+199
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62279 91177308-0d34-0410-b5e6-96231b3b80d8
* Use lightweight DebugInfo objects directly.Devang Patel2009-01-151-1/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62276 91177308-0d34-0410-b5e6-96231b3b80d8
* Use variable's context to identify respective DbgScope.Devang Patel2009-01-151-0/+355
| | | | | | | Use light weight DebugInfo object directly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62269 91177308-0d34-0410-b5e6-96231b3b80d8
* - Teach CanEvaluateInDifferentType of this xform: sext (zext ty1), ty2 -> ↵Evan Cheng2009-01-151-0/+11
| | | | | | | | | zext ty2 - Looking at the number of sign bits of the a sext instruction to determine whether new trunc + sext pair should be added when its source is being evaluated in a different type. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62263 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't fold address calculations which use negative offsets intoRichard Osborne2009-01-151-0/+12
| | | | | | | the ADDRspii addressing mode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62258 91177308-0d34-0410-b5e6-96231b3b80d8
* - Convert remaining i64 custom lowering into custom instruction emissionScott Michel2009-01-152-9/+40
| | | | | | | | | | | | | | sequences in SPUDAGToDAGISel.cpp and SPU64InstrInfo.td, killing custom DAG node types as needed. - i64 mul is now a legal instruction, but emits an instruction sequence that stretches tblgen and the imagination, as well as violating laws of several small countries and most southern US states (just kidding, but looking at a function with 80+ parameters is really weird and just plain wrong.) - Update tests as needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62254 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR3325, a miscompilation of invokes by IPSCCP. Patch by Jay Foad!Chris Lattner2009-01-141-0/+28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62244 91177308-0d34-0410-b5e6-96231b3b80d8
* xfail for now.Devang Patel2009-01-141-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62243 91177308-0d34-0410-b5e6-96231b3b80d8
* Add pseudo instructions to the XCore for (load|store|load address) of aRichard Osborne2009-01-141-0/+18
| | | | | | | | | | | | frame index. eliminateFrameIndex will replace these instructions with (LDWSP|STWSP|LDAWSP) or (LDW|STW|LDAWF) if a frame pointer is in use. This fixes PR 3324. Previously we used LDWSP, STWSP, LDAWSP before frame pointer elimination. However since they were marked as implicitly using SP they could not be rematerialised. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62238 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix the time regression I introduced in 464.h264ref withDale Johannesen2009-01-141-0/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | my earlier patch to this file. The issue there was that all uses of an IV inside a loop are actually references to Base[IV*2], and there was one use outside that was the same but LSR didn't see the base or the scaling because it didn't recurse into uses outside the loop; thus, it used base+IV*scale mode inside the loop instead of pulling base out of the loop. This was extra bad because register pressure later forced both base and IV into memory. Doing that recursion, at least enough to figure out addressing modes, is a good idea in general; the change in AddUsersIfInteresting does this. However, there were side effects.... It is also possible for recursing outside the loop to introduce another IV where there was only 1 before (if the refs inside are not scaled and the ref outside is). I don't think this is a common case, but it's in the testsuite. It is right to be very aggressive about getting rid of such introduced IVs (CheckForIVReuse and the handling of nonzero RewriteFactor in StrengthReduceStridedIVUsers). In the testcase in question the new IV produced this way has both a nonconstant stride and a nonzero base, neither of which was handled before. And when inserting new code that feeds into a PHI, it's right to put such code at the original location rather than in the PHI's immediate predecessor(s) when the original location is outside the loop (a case that couldn't happen before) (RewriteInstructionToUseNewBase); better to avoid making multiple copies of it in this case. Also, the mechanism for keeping SCEV's corresponding to GEP's no longer works, as the GEP might change after its SCEV is remembered, invalidating the SCEV, and we might get a bad SCEV value when looking up the GEP again for a later loop. This also couldn't happen before, as we weren't recursing into GEP's outside the loop. Also, when we build an expression that involves a (possibly non-affine) IV from a different loop as well as an IV from the one we're interested in (containsAddRecFromDifferentLoop), don't recurse into that. We can't do much with it and will get in trouble if we try to create new non-affine IVs or something. More testcases are coming. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62212 91177308-0d34-0410-b5e6-96231b3b80d8
* rewrite OptimizeAwayTrappingUsesOfLoads to 1) avoid a temporaryChris Lattner2009-01-141-0/+35
| | | | | | | | | vector and extraneous loop over it, 2) not delete globals used by phis/selects etc which could actually be useful. This fixes PR3321. Many thanks to Duncan for narrowing this down. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62201 91177308-0d34-0410-b5e6-96231b3b80d8
* Disable the register+memory forms of the bt instructions for now. ThanksDan Gohman2009-01-131-1/+6
| | | | | | | | | to Eli for pointing out that these forms don't ignore the high bits of their index operands, and as such are not immediately suitable for use by isel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62194 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix testsuite regressions from recursive inlining.Dale Johannesen2009-01-131-0/+293
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62189 91177308-0d34-0410-b5e6-96231b3b80d8
* The list-td and list-tdrr schedulers don't yet support physregDan Gohman2009-01-132-2/+4
| | | | | | | | | | | | scheduling dependencies. Add assertion checks to help catch this. It appears the Mips target defaults to list-td, and it has a regression test that uses a physreg dependence. Such code was liable to be miscompiled, and now evokes an assertion failure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62177 91177308-0d34-0410-b5e6-96231b3b80d8
* Make instcombine ensure that all allocas are explicitly aligned at atDan Gohman2009-01-132-2/+4
| | | | | | | least their preferred alignment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62176 91177308-0d34-0410-b5e6-96231b3b80d8
* When replacing uses and the same node is reachedDuncan Sands2009-01-131-0/+21
| | | | | | | | | via two paths, process it once not twice, d'oh! Analysis, testcase and original patch thanks to Mon Ping Wang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62169 91177308-0d34-0410-b5e6-96231b3b80d8
* Mark this XFAIL for the moment.Duncan Sands2009-01-131-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62168 91177308-0d34-0410-b5e6-96231b3b80d8
* Wind SCEV back in time, to Nov 18th. This 'fixes' PR3275, PR3294, PR3295,Nick Lewycky2009-01-137-0/+7
| | | | | | | PR3296 and PR3302. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62160 91177308-0d34-0410-b5e6-96231b3b80d8
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