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2013-05-06Rotate multi-exit loops even if the latch was simplified.Andrew Trick
Test case by Michele Scandale! Fixes PR10293: Load not hoisted out of loop with multiple exits. There are few regressions with this patch, now tracked by rdar:13817079, and a roughly equal number of improvements. The regressions are almost certainly back luck because LoopRotate has very little idea of whether rotation is profitable. Doing better requires a more comprehensive solution. This checkin is a quick fix that lacks generality (PR10293 has a counter-example). But it trivially fixes the case in PR10293 without interfering with other cases, and it does satify the criteria that LoopRotate is a loop canonicalization pass that should avoid heuristics and special cases. I can think of two approaches that would probably be better in the long run. Ultimately they may both make sense. (1) LoopRotate should check that the current header would make a good loop guard, and that the loop does not already has a sufficient guard. The artifical SimplifiedLoopLatch check would be unnecessary, and the design would be more general and canonical. Two difficulties: - We need a strong guarantee that we won't endlessly rotate, so the analysis would need to be precise in order to avoid the SimplifiedLoopLatch precondition. - Analysis like this are usually based on SCEV, which we don't want to rely on. (2) Rotate on-demand in late loop passes. This could even be done by shoving the loop back on the queue after the optimization that needs it. This could work well when we find LICM opportunities in multi-branch loops. This requires some work, and it doesn't really solve the problem of SCEV wanting a loop guard before the analysis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181230 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06R600: Remove dead code from the CodeEmitter v2Tom Stellard
v2: - Replace switch statement with TSFlags query Reviewed-by: Vincent Lejeune <vljn@ovi.com> Tested-By: Aaron Watry <awatry@gmail.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181229 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06R600: Emit config values in register / value pairsTom Stellard
Reviewed-by: Vincent Lejeune <vljn@ovi.com> Tested-By: Aaron Watry <awatry@gmail.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181228 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06Remove unnecessary instance variable and rework logic accordingly.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181227 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06Grammar.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181226 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06R600: Stop emitting the instruction type byte before each instructionTom Stellard
Reviewed-by: Vincent Lejeune <vljn@ovi.com> Tested-By: Aaron Watry <awatry@gmail.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181225 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06Don't emit .dwo sections unless they exist.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181224 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06R600: Emit ISA for CALL_FS_* instructionsTom Stellard
Reviewed-by: Vincent Lejeune <vljn@ovi.com> Tested-By: Aaron Watry <awatry@gmail.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181223 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06[SystemZ] Update non-pic DWARF encodingsUlrich Weigand
As pointed out by Rafael Espindola, we should match the DWARF encodings produced by GCC in both pic and non-pic modes. This was not the case for the non-pic case. This patch changes all DWARF encodings to DW_EH_PE_absptr for the non-pic case, just like GCC does. The test case is updated to check for both variants. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181222 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06PowerPC: Fix unimplemented relocation on ppc64Adhemerval Zanella
This patch handles the R_PPC64_REL64 relocation type for powerpc64 for mcjit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181220 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06Fix add4.ll test cmdline so that it passesJean-Luc Duprat
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181219 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06Provide InstCombines for the following 3 cases:Jean-Luc Duprat
A * (1 - (uitofp i1 C)) -> select C, 0, A B * (uitofp i1 C) -> select C, B, 0 select C, 0, A + select C, B, 0 -> select C, B, A These come up in code that has been hand-optimized from a select to a linear blend, on platforms where that may have mattered. We want to undo such changes with the following transform: A*(1 - uitofp i1 C) + B*(uitofp i1 C) -> select C, A, B git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181216 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06AArch64: use MCJIT by default and enable related tests.Tim Northover
This just enables some testing I'd missed after implementing MCJIT support. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181215 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06[SystemZ] Add to --enable-targets=allUlrich Weigand
This patch finally enables the SystemZ target in the default build (with --enable-targets=all). Patch by Richard Sandiford. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181209 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06[SystemZ] Add configure bitsUlrich Weigand
This patch wires up the SystemZ target in configure, so that it can now be built using --enable-targets=systemz. It is not yet included in the default build (--enable-targets=all); this will be done by a follow-up patch. Patch by Richard Sandiford. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181208 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06[SystemZ] Set up JIT/MCJIT test casesUlrich Weigand
This patch adds the necessary configuration bits and #ifdef's to set up the JIT/MCJIT test cases for SystemZ. Like other recent targets, we do fully support MCJIT, but do not support the old JIT at all. Set up the lit config files accordingly, and disable old-JIT unit tests. Patch by Richard Sandiford. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181207 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06[SystemZ] Add MC test casesUlrich Weigand
This adds all MC tests for the SystemZ target. Patch by Richard Sandiford. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181206 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06[SystemZ] Add DebugInfo test casesUlrich Weigand
This adds all DebugInfo tests for the SystemZ target. This version of the patch incorporates feedback from reviews by Eric Christopher and Rafael Espindola. Thanks to all reviewers! Patch by Richard Sandiford. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181205 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06[SystemZ] Add CodeGen test casesUlrich Weigand
This adds all CodeGen tests for the SystemZ target. This version of the patch incorporates feedback from a review by Sean Silva. Thanks to all reviewers! Patch by Richard Sandiford. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181204 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06[SystemZ] Add back endUlrich Weigand
This adds the actual lib/Target/SystemZ target files necessary to implement the SystemZ target. Note that at this point, the target cannot yet be built since the configure bits are missing. Those will be provided shortly by a follow-on patch. This version of the patch incorporates feedback from reviews by Chris Lattner and Anton Korobeynikov. Thanks to all reviewers! Patch by Richard Sandiford. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181203 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06[SystemZ] Define DWARF encodingUlrich Weigand
This is another patch in preparation for adding the SystemZ target. It defines the appropriate values for DWARF encodings; the intent is to be compatible with what GCC currently does on the target. Patch by Richard Sandiford. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181201 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06Simplify JIT unit test #ifdefsUlrich Weigand
Several platforms need to disable all old-JIT unit tests, since they only support the new MCJIT. This currently done via #ifdef'ing out those tests in the ExecutionEngine/JIT/*.cpp files. As those #ifdef's have grown historically, we now have a number of repeated directives which -in total- cover nearly the whole file, but leave a couple of helper functions out. When building the tests with clang itself, those helper functions now cause spurious "unused function" warnings. To fix those warnings, and also to remove the duplicate #ifdef conditions and make it easier to disable the tests for a new target, this patch consolidates the #ifdefs into a single one per file, which covers all the tests including all helper routines. Tested on PowerPC and SystemZ. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181200 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06Free the exception object. Should fix the vg bots.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181195 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06[PowerPC] Fix memory corruption in AsmParserUlrich Weigand
As pointed out by Evgeniy Stepanov, assigning a std::string temporary to a StringRef is not a good idea. Rework MatchRegisterName to avoid using the .lower routine. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181192 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06Fix formatting. Patch by o11c.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181189 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06Fix slightly too aggressive conact_vector optimization.Michael Kuperstein
(Would sometimes optimize away conacts used to extend a vector with undef values) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181186 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06Add a testcase that checks that we generate functions with frameBill Wendling
pointers or not depending upon the function attributes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181180 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06XFAIL for cygwin.Rafael Espindola
Looks like symbol resolution is not working on cygwin, the test fails because __gxx_personality_v0 is not found. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181179 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06Update the comment to mention that we use TTI.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181178 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06Revert r164763 because it introduces new shuffles.Nadav Rotem
Thanks Nick Lewycky for pointing this out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181177 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06Fix unchecked uses of DominatorTree in MemoryDependenceAnalysis.Matt Arsenault
Use unknown results for places where it would be needed git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181176 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06Fix const merging when an alias of a const is llvm.used.Rafael Espindola
We used to disable constant merging not only if a constant is llvm.used, but also if an alias of a constant is llvm.used. This change fixes that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181175 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05This should also fail on ARM.Rafael Espindola
We currently have no way to register new eh frames on ARM. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181172 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05Fix XFAIL line.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181171 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05XFAIL this on ppc64.Rafael Espindola
It looks like eh uses an unimplemented relocation on pp64 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181169 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05Port ExceptionDemo to MCJIT.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181168 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05Add EH support to the MCJIT.Rafael Espindola
This gets exception handling working on ELF and Macho (x86-64 at least). Other than the EH frame registration, this patch also implements support for GOT relocations which are used to locate the personality function on MachO. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181167 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05Test case for r181160 and r181161. rdar://13782395Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181162 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05ARM AnalyzeBranch should conservatively return true when it sees a predicatedEvan Cheng
indirect branch at the end of the BB. Otherwise if-converter, branch folding pass may incorrectly update its successor info if it consider BB as fallthrough to the next BB. rdar://13782395 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181161 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05Teach if-converter to avoid removing BBs whose addresses are takne. ↵Evan Cheng
rdar://13782395 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181160 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05LoopVectorize: Print values instead of pointers in debug output.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181157 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05[docs] Update Target Feature Matrix for the XCore backend.Richard Osborne
Disassembler support has recently been added. Fill in some other unknowns at the same time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181156 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05[XCore] Add LDAPB instructions.Richard Osborne
With the change the disassembler now supports the XCore ISA in its entirety. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181155 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05[XCore] Update LDAP to use pcrel_imm.Richard Osborne
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181154 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05[XCore] Rename calltarget -> pcrel_imm.Richard Osborne
No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181153 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05[XCore] Add BLRB instructions.Richard Osborne
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181152 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05[XCore] Remove '-' from back branch asm syntax.Richard Osborne
Instead operands are treated as negative immediates where the sign bit is implicit in the instruction encoding. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181151 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05InlineSpiller: Remove quadratic behavior.Benjamin Kramer
No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181149 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05For ARM backend, fixed "byval" attribute support.Stepan Dyatkovskiy
Now even the small structures could be passed within byval (small enough to be stored in GPRs). In regression tests next function prototypes are checked: PR15293: %artz = type { i32 } define void @foo(%artz* byval %s) define void @foo2(%artz* byval %s, i32 %p, %artz* byval %s2) foo: "s" stored in R0 foo2: "s" stored in R0, "s2" stored in R2. Next AAPCS rules are checked: 5.5 Parameters Passing, C.4 and C.5, "ParamSize" is parameter size in 32bit words: -- NSAA != 0, NCRN < R4 and NCRN+ParamSize > R4. Parameter should be sent to the stack; NCRN := R4. -- NSAA != 0, and NCRN < R4, NCRN+ParamSize < R4. Parameter stored in GPRs; NCRN += ParamSize. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181148 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-05Add missing PatternMatch.cpp to CMakeLists.txtArnold Schwaighofer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181147 91177308-0d34-0410-b5e6-96231b3b80d8
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