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* Change how globalopt handles aliases in llvm.used.Rafael Espindola2013-06-111-4/+9
| | | | | | | | | | | | | | | | | | | | | | | | Instead of a custom implementation of replaceAllUsesWith, we just call replaceAllUsesWith and recreate llvm.used and llvm.compiler-used. This change is particularity interesting because it makes llvm see through what clang is doing with static used functions in extern "C" contexts. With this change, running clang -O2 in extern "C" { __attribute__((used)) static void foo() {} } produces @llvm.used = appending global [1 x i8*] [i8* bitcast (void ()* @foo to i8*)], section "llvm.metadata" define internal void @foo() #0 { entry: ret void } git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183756 91177308-0d34-0410-b5e6-96231b3b80d8
* Rework r183728, suppress assert(0) for now. Its behavior depends on ↵NAKAMURA Takumi2013-06-112-6/+0
| | | | | | | | assertions on win32 hosts. FIXME: Introduce yet another checker but assert(0). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183736 91177308-0d34-0410-b5e6-96231b3b80d8
* It adds support for negative zero offsets for loads and stores.Mihai Popa2013-06-111-1/+4
| | | | | | | Negative zero is returned by the primary expression parser as INT32_MIN, so all that the method needs to do is to accept this value. Behavior already present for Thumb2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183734 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch adds support for FPINST/FPINST2 as operands to vmsr/vmrs. These ↵Mihai Popa2013-06-112-2/+18
| | | | | | are optional registers that may be supported some ARM implementations to aid with resolution of floating point exceptions. The manual pages for vmsr and vmrs do not detail their use. Encodings and other information can be found in ARM Architecture Reference Manual section F, chapter 6, paragraph 3. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183733 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM: Enforce decoding rules for VLDn instructionsAmaury de la Vieuville2013-06-113-38/+62
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183731 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM: Fix STREX/LDREX reecodingAmaury de la Vieuville2013-06-112-0/+28
| | | | | | The decoded MCInst wasn't reencoded as the same instruction git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183729 91177308-0d34-0410-b5e6-96231b3b80d8
* Tweak a couple of tests on win32 hosts with +Asserts.NAKAMURA Takumi2013-06-112-0/+6
| | | | | | | | | - Don't use assert(0), or tests may pass or fail according to assertions. - For now, The tests are marked as XFAIL for win32 hosts. FIXME: Could we avoid XFAIL to specify triple in the RUN lines? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183728 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix dubious type name similar to member name.Sean Silva2013-06-115-5/+5
| | | | | | Should bring bots back to life. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183715 91177308-0d34-0410-b5e6-96231b3b80d8
* [yaml2obj] Initial ELF support.Sean Silva2013-06-107-0/+79
| | | | | | | | | Currently, only emitting the ELF header is supported (no sections or segments). The ELFYAML code organization is broadly similar to the COFFYAML code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183711 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM: diagnose ARM/Thumb assembly switches on CPUs only supporting one.Tim Northover2013-06-105-3/+36
| | | | | | | | | | | Some ARM CPUs only support ARM mode (ancient v4 ones, for example) and some only support Thumb mode (M-class ones currently). This makes sure such CPUs default to the correct mode and makes the AsmParser diagnose an attempt to switch modes incorrectly. rdar://14024354 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183710 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: Stop LEA64_32r doing unspeakable things to its arguments.Tim Northover2013-06-103-6/+8
| | | | | | | | | | | | Previously LEA64_32r went through virtually the entire backend thinking it was using 32-bit registers until its blissful illusions were cruelly snatched away by MCInstLower and 64-bit equivalents were substituted at the last minute. This patch makes it behave normally, and take 64-bit registers as sources all the way through. Previous uses (for 32-bit arithmetic) are accommodated via SUBREG_TO_REG instructions which make the types and classes agree properly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183693 91177308-0d34-0410-b5e6-96231b3b80d8
* [PowerPC] Support extended sc mnemonicUlrich Weigand2013-06-101-0/+2
| | | | | | | | | | | A plain "sc" without argument is supposed to be treated like "sc 0" by the assembler. This patch adds a corresponding alias. Problem reported by Joerg Sonnenberger. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183687 91177308-0d34-0410-b5e6-96231b3b80d8
* [PowerPC] Support branch mnemonics with implied CR0Ulrich Weigand2013-06-101-1/+197
| | | | | | | | | | | | The extended branch mnemonics are supposed to use an implied CR0 if there is no explicit condition register specified. This patch adds extra variants of the mnemonics to this effect. Problem reported by Joerg Sonnenberger. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183686 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM: ISB cannot be passed the same options as DMBAmaury de la Vieuville2013-06-106-0/+22
| | | | | | ISB should only accepts full system sync, other options are reserved git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183656 91177308-0d34-0410-b5e6-96231b3b80d8
* [NVPTX] Remove old CONST_NOT_GEN address space that is not being used ↵Justin Holewinski2013-06-101-0/+10
| | | | | | anymore and causes constants to be emitted in the global address space git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183652 91177308-0d34-0410-b5e6-96231b3b80d8
* Add test for ARM FastISel load/store register classesJF Bastien2013-06-101-0/+70
| | | | | | r183624 fixed an issue that was tested indirectly. Test it directly with this new test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183634 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a regression I introduced when I expanded the complex pseudos inReed Kotler2013-06-091-0/+6406
| | | | | | | | | | | the Mips16 port. A few of the psuedos could either take signed or unsigned arguments and I did not distinguish the case and improperly rejected some valid cases that the assembler had previously accepted when they were pure pseudos that expanded as assembly instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183633 91177308-0d34-0410-b5e6-96231b3b80d8
* Refine the ARM EHABI test cases.Logan Chien2013-06-099-413/+323
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since we have ARM unwind directive parser and assembler, we can check the correctness in two stages: 1. From LLVM assembly (.ll) to ARM assembly (.s) 2. From ARM assembly (.s) to ELF object file (.o) We already have several "*.s to *.o" test cases. This CL adds some "*.ll to *.s" test cases and removes the redundant "*.ll to *.o" test cases. New test cases to check "*.ll to *.s" code generator: - ehabi.ll: Check the correctness of the generated unwind directives. - section-name.ll: Check the section name of functions. Removed test cases: - ehabi-mc-cantunwind.ll (Covered by ehabi-cantunwind.ll, and eh-directive-cantunwind.s) - ehabi-mc-compact-pr0.ll (Covered by ehabi.ll, eh-compact-pr0.s, eh-directive-save.s, and eh-directive-setfp.s) - ehabi-mc-compact-pr1.ll (Covered by ehabi.ll, eh-compact-pr1.s, eh-directive-save.s, and eh-directive-setfp.s) - ehabi-mc.ll (Covered by ehabi.ll, and eh-directive-integrated-test.s) - ehabi-mc-section-group.ll (Covered by section-name.ll, and eh-directive-section-comdat.s) - ehabi-mc-section.ll (Covered by section-name.ll, and eh-directive-section.s) - ehabi-mc-sh_link.ll (Covered by eh-directive-text-section.s, and eh-directive-section.s) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183628 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix ARM unwind opcode assembler in several cases.Logan Chien2013-06-097-8/+314
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Changes to ARM unwind opcode assembler: * Fix multiple .save or .vsave directives. Besides, the order is preserved now. * For the directives which will generate multiple opcodes, such as ".save {r0-r11}", the order of the unwind opcode is fixed now, i.e. the registers with less encoding value are popped first. * Fix the $sp offset calculation. Now, we can use the .setfp, .pad, .save, and .vsave directives at any order. Changes to test cases: * Add test cases to check the order of multiple opcodes for the .save directive. * Fix the incorrect $sp offset in the test case. The stack pointer offset specified in the test case was incorrect. (Changed test cases: ehabi-mc-section.ll and ehabi-mc.ll) * The opcode to restore $sp are slightly reordered. The behavior are not changed, and the new output is same as the output of GNU as. (Changed test cases: eh-directive-pad.s and eh-directive-setfp.s) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183627 91177308-0d34-0410-b5e6-96231b3b80d8
* Removed PackedDouble domain from scalar instructions. Added more formats for ↵Elena Demikhovsky2013-06-092-3/+3
| | | | | | the scalar stuff. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183626 91177308-0d34-0410-b5e6-96231b3b80d8
* Make DeadArgumentElimination more conservative on variadic functionsTim Northover2013-06-091-0/+38
| | | | | | | Variadic functions are particularly fragile in the face of ABI changes, so this limits how much the pass changes them git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183625 91177308-0d34-0410-b5e6-96231b3b80d8
* [Sparc] Delete FPMover Pass and remove Fp* Pseudo-instructions from Sparc ↵Venkatraman Govindaraju2013-06-081-0/+47
| | | | | | backend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183613 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM: fix VMOVvnf32 decoding when ambiguous with VCVTAmaury de la Vieuville2013-06-081-0/+7
| | | | | | Enforce Table A7-15 (op=1, cmode=0b111) -> UNDEF git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183612 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM: enforce SRS decoding constraintsAmaury de la Vieuville2013-06-081-3/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183611 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM: fix CPS decoding when ambiguous with QADDAmaury de la Vieuville2013-06-082-0/+13
| | | | | | | | | Handle the case when the disassembler table can't tell the difference between some encodings of QADD and CPS. Add some necessary safe guards in CPS decoding as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183610 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM: fix VCVT decodingAmaury de la Vieuville2013-06-081-0/+8
| | | | | | UNPRED was reported instead of UNDEF git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183608 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a potential bug in r183584.Shuxin Yang2013-06-081-22/+0
| | | | | | | | | | | | | | r183584 tries to derive some info from the code *AFTER* a call and apply these derived info to the code *BEFORE* the call, which is not always safe as the call in question may never return, and in this case, the derived info is invalid. Thank Duncan for pointing out this potential bug. rdar://14073661 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183606 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply r183552. This time, use a standard type for the option to avoid templateQuentin Colombet2013-06-082-0/+48
| | | | | | | | | | | | | | | | instantiation issue with non-standard type. Add a backend option to warn on a given stack size limit. Option: -mllvm -warn-stack-size=<limit> Output (if limit is exceeded): warning: Stack size limit exceeded (<actual size>) in <functionName>. The longer term plan is to hook that to a clang warning. PR:4072 <rdar://problem/13987214>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183595 91177308-0d34-0410-b5e6-96231b3b80d8
* R600: Anti dep better handled in tex clauseVincent Lejeune2013-06-071-0/+24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183592 91177308-0d34-0410-b5e6-96231b3b80d8
* Add missing zextloadi1 to i64 patterns. PR16721.Jakob Stoklund Olesen2013-06-071-0/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183587 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix an assertion in MemCpyOpt pass.Shuxin Yang2013-06-071-0/+39
| | | | | | | | | | | | | | | | | | | | | | The MemCpyOpt pass is capable of optimizing: callee(&S); copy N bytes from S to D. into: callee(&D); subject to some legality constraints. Assertion is triggered when the compiler tries to evalute "sizeof(typeof(D))", while D is an opaque-typed, 'sret' formal argument of function being compiled. i.e. the signature of the func being compiled is something like this: T caller(...,%opaque* noalias nocapture sret %D, ...) The fix is that when come across such situation, instead of calling some utility functions to get the size of D's type (which will crash), we simply assume D has at least N bytes as implified by the copy-instruction. rdar://14073661 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183584 91177308-0d34-0410-b5e6-96231b3b80d8
* Disallow i64 div/rem in PPC32 counter loopsHal Finkel2013-06-071-0/+93
| | | | | | | | On PPC32, [su]div,rem on i64 types are transformed into runtime library function calls. As a result, they are not allowed in counter-based loops (the counter-loops verification pass caught this error; this change fixes PR16169). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183581 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert commits related to stack warning.Quentin Colombet2013-06-072-48/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183579 91177308-0d34-0410-b5e6-96231b3b80d8
* Explicit triple in warn stack size test cases to not depend on OS.Quentin Colombet2013-06-072-4/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183574 91177308-0d34-0410-b5e6-96231b3b80d8
* R600: Fix calculation of stack offset in AMDGPUFrameLoweringTom Stellard2013-06-071-0/+33
| | | | | | | | | | We weren't computing structure size correctly and we were relying on the original alloca instruction to compute the offset, which isn't always reliable. Reviewed-by: Vincent Lejeune <vljn@ovi.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183568 91177308-0d34-0410-b5e6-96231b3b80d8
* R600: Fix the fetch limits for R600 generation GPUsTom Stellard2013-06-072-0/+129
| | | | | | | | Reviewed-by: Vincent Lejeune <vljn@ovi.com> https://bugs.freedesktop.org/show_bug.cgi?id=64257 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183560 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a backend option to warn on a given stack size limit.Quentin Colombet2013-06-072-0/+48
| | | | | | | | | | | | | Option: -mllvm -warn-stack-size=<limit> Output (if limit is exceeded): warning: Stack size limit exceeded (<actual size>) in <functionName>. The longer term plan is to hook that to a clang warning. PR:4072 <rdar://problem/13987214> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183552 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM FastISel integer sext/zext improvementsJF Bastien2013-06-079-29/+188
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | My recent ARM FastISel patch exposed this bug: http://llvm.org/bugs/show_bug.cgi?id=16178 The root cause is that it can't select integer sext/zext pre-ARMv6 and asserts out. The current integer sext/zext code doesn't handle other cases gracefully either, so this patch makes it handle all sext and zext from i1/i8/i16 to i8/i16/i32, with and without ARMv6, both in Thumb and ARM mode. This should fix the bug as well as make FastISel faster because it bails to SelectionDAG less often. See fastisel-ext.patch for this. fastisel-ext-tests.patch changes current tests to always use reg-imm AND for 8-bit zext instead of UXTB. This simplifies code since it is supported on ARMv4t and later, and at least on A15 both should perform exactly the same (both have exec 1 uop 1, type I). 2013-05-31-char-shift-crash.ll is a bitcode version of the above bug 16178 repro. fast-isel-ext.ll tests all sext/zext combinations that ARM FastISel should now handle. Note that my ARM FastISel enabling patch was reverted due to a separate failure when dealing with MCJIT, I'll fix this second failure and then turn FastISel on again for non-iOS ARM targets. I've tested "make check-all" on my x86 box, and "lnt test-suite" on A15 hardware. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183551 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach AsmPrinter how to print odd constants.Quentin Colombet2013-06-073-0/+52
| | | | | | | | | | | | Fix an assertion when the compiler encounters big constants whose bit width is not a multiple of 64-bits. Although clang would never generate something like this, the backend should be able to handle any legal IR. <rdar://problem/13363576> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183544 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a typo in asm string of BP* family of instructions. With this fixRoman Divacky2013-06-071-2/+2
| | | | | | | I am able to compile/assemble/link/run /bin/echo from FreeBSD. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183537 91177308-0d34-0410-b5e6-96231b3b80d8
* Support OpenBSD's native frame protection conventions.Rafael Espindola2013-06-071-0/+5
| | | | | | | | | | | | | | | OpenBSD's stack smashing protection differs slightly from other platforms: 1. The smash handler function is "__stack_smash_handler(const char *funcname)" instead of "__stack_chk_fail(void)". 2. There's a hidden "long __guard_local" object that gets linked into each executable and DSO. Patch by Matthew Dempsky. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183533 91177308-0d34-0410-b5e6-96231b3b80d8
* [objc-arc] Ensure that the cfg path count does not overflow when we multiply ↵Michael Gottesman2013-06-071-3/+531
| | | | | | | | TopDownPathCount/BottomUpPathCount. rdar://12480535 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183489 91177308-0d34-0410-b5e6-96231b3b80d8
* [Sparc]: Use cmp instruction instead of subcc to compare integers.Venkatraman Govindaraju2013-06-074-17/+17
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183463 91177308-0d34-0410-b5e6-96231b3b80d8
* Move the test for the data in code into the ARM directory as it is an ARMKevin Enderby2013-06-061-0/+0
| | | | | | | | | binary that is used for the test. Caught by Jim Grosbach! rdar://11791371 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183442 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a testcase from pr16244.Rafael Espindola2013-06-061-0/+10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183433 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach llvm-objdump with the -macho parser how to use the data in code tableKevin Enderby2013-06-062-0/+7
| | | | | | | | | | | | | | | | from the LC_DATA_IN_CODE load command. And when disassembling print the data in code formatted for the kind of data it and not disassemble those bytes. I added the format specific functionality to the derived class MachOObjectFile since these tables only appears in Mach-O object files. This is my first attempt to modify the libObject stuff so if folks have better suggestions how to fit this in or suggestions on the implementation please let me know. rdar://11791371 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183424 91177308-0d34-0410-b5e6-96231b3b80d8
* Print symbol names in relocations when dumping COFF as YAML.Rafael Espindola2013-06-063-12/+12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183403 91177308-0d34-0410-b5e6-96231b3b80d8
* R600: Add a pass that merge Vector RegisterVincent Lejeune2013-06-051-0/+30
| | | | | | | Previously commited @183279 but tests were failing, reverted @183286 It was broken because @183336 was missing, now it's there. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183343 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't hide the first ELF symbol.Rafael Espindola2013-06-054-1/+37
| | | | | | | | The first symbol on ELF is dummy, but it has a defined content and readelf normally displays it. With this change llvm-readobj also displays it and we can check that llvm-mc output is correct according to the standard. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183337 91177308-0d34-0410-b5e6-96231b3b80d8
* R600: Schedule copy from phys register at beginning of blockVincent Lejeune2013-06-0510-10/+10
| | | | | | It allows regalloc pass to remove them by trivially assigning associated reg git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183336 91177308-0d34-0410-b5e6-96231b3b80d8
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