Rafael Espindola [Wed, 12 Nov 2014 18:37:00 +0000 (18:37 +0000)]
Use the return of readBytes to find out if we are at the end of the stream.
This allows the removal of isObjectEnd and opens the way for reading 64 bits
at a time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221804
91177308-0d34-0410-b5e6-
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Sanjay Patel [Wed, 12 Nov 2014 18:25:47 +0000 (18:25 +0000)]
CGSCC should not treat intrinsic calls like function calls (PR21403)
Make the handling of calls to intrinsics in CGSCC consistent:
they are not treated like regular function calls because they
are never lowered to function calls.
Without this patch, we can get dangling pointer asserts from
the subsequent loop that processes callsites because it already
ignores intrinsics.
See http://llvm.org/bugs/show_bug.cgi?id=21403 for more details / discussion.
Differential Revision: http://reviews.llvm.org/D6124
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221802
91177308-0d34-0410-b5e6-
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Jingyue Wu [Wed, 12 Nov 2014 18:25:06 +0000 (18:25 +0000)]
Fix broken doxygen annotations, NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221801
91177308-0d34-0410-b5e6-
96231b3b80d8
Jingyue Wu [Wed, 12 Nov 2014 18:09:15 +0000 (18:09 +0000)]
Disable indvar widening if arithmetics on the wider type are more expensive
Summary:
Reapply r221772. The old patch breaks the bot because the @indvar_32_bit test
was run whether NVPTX was enabled or not.
IndVarSimplify should not widen an indvar if arithmetics on the wider
indvar are more expensive than those on the narrower indvar. For
instance, although NVPTX64 treats i64 as a legal type, an ADD on i64 is
twice as expensive as that on i32, because the hardware needs to
simulate a 64-bit integer using two 32-bit integers.
Split from D6188, and based on D6195 which adds NVPTXTargetTransformInfo.
Fixes PR21148.
Test Plan:
Added @indvar_32_bit that verifies we do not widen an indvar if the arithmetics
on the wider type are more expensive. This test is run only when NVPTX is
enabled.
Reviewers: jholewinski, eliben, meheff, atrick
Reviewed By: atrick
Subscribers: jholewinski, llvm-commits
Differential Revision: http://reviews.llvm.org/D6196
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221799
91177308-0d34-0410-b5e6-
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Sanjay Patel [Wed, 12 Nov 2014 18:07:42 +0000 (18:07 +0000)]
remove function names from comments; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221798
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 12 Nov 2014 17:11:16 +0000 (17:11 +0000)]
Return the number of read bytes in MemoryObject::readBytes.
Returning more information will allow BitstreamReader to be simplified a bit
and changed to read 64 bits at a time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221794
91177308-0d34-0410-b5e6-
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Justin Hibbits [Wed, 12 Nov 2014 16:50:15 +0000 (16:50 +0000)]
Revert part of the PIC tests (TLS part)
This change actually wasn't warranted for -O0, and the new changes prove it and
break the build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221793
91177308-0d34-0410-b5e6-
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Justin Hibbits [Wed, 12 Nov 2014 16:40:00 +0000 (16:40 +0000)]
Fix thet tests.
I seem to have missed the update I made for changing 'flag_pic' to "PIC Level".
Mea culpa.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221792
91177308-0d34-0410-b5e6-
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Justin Hibbits [Wed, 12 Nov 2014 15:16:30 +0000 (15:16 +0000)]
Add support for small-model PIC for PowerPC.
Summary:
Large-model was added first. With the addition of support for multiple PIC
models in LLVM, now add small-model PIC for 32-bit PowerPC, SysV4 ABI. This
generates more optimal code, for shared libraries with less than about 16380
data objects.
Test Plan: Test cases added or updated
Reviewers: joerg, hfinkel
Reviewed By: hfinkel
Subscribers: jholewinski, mcrosier, emaste, llvm-commits
Differential Revision: http://reviews.llvm.org/D5399
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221791
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 12 Nov 2014 14:48:38 +0000 (14:48 +0000)]
Reduce code duplication a bit. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221785
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 12 Nov 2014 14:23:04 +0000 (14:23 +0000)]
Fix the test.
It was broken since r221708.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221783
91177308-0d34-0410-b5e6-
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Aaron Ballman [Wed, 12 Nov 2014 14:01:17 +0000 (14:01 +0000)]
Fixing more -Wcast-qual warnings; NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221782
91177308-0d34-0410-b5e6-
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Aaron Ballman [Wed, 12 Nov 2014 13:55:27 +0000 (13:55 +0000)]
Fixing a -Wcast-qual warning; NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221781
91177308-0d34-0410-b5e6-
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Zoran Jovanovic [Wed, 12 Nov 2014 13:30:10 +0000 (13:30 +0000)]
[mips][micromips] Add predicate 'InMicroMips' at CodeGen patterns for microMIPS instructions
Differential Revision: http://reviews.llvm.org/D6198
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221780
91177308-0d34-0410-b5e6-
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Chandler Carruth [Wed, 12 Nov 2014 10:05:18 +0000 (10:05 +0000)]
[x86] Start improving the matching of unpck instructions based on test
cases from Halide folks. This initial step was extracted from
a prototype change by Clay Wood to try and address regressions found
with Halide and the new vector shuffle lowering.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221779
91177308-0d34-0410-b5e6-
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Chandler Carruth [Wed, 12 Nov 2014 09:17:15 +0000 (09:17 +0000)]
[x86] Clean up a bunch of vector shuffle tests with my script. Notably,
removes windows line endings and other noise. This is in prelude to
making substantive changes to these tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221776
91177308-0d34-0410-b5e6-
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NAKAMURA Takumi [Wed, 12 Nov 2014 07:42:26 +0000 (07:42 +0000)]
MCDisassembler::getInstruction():: Prune also "\param Region", since it was removed in r221751. [-Wdocumentation]
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221775
91177308-0d34-0410-b5e6-
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Elena Demikhovsky [Wed, 12 Nov 2014 07:31:03 +0000 (07:31 +0000)]
AVX-512: Intrinsics for ERI
3 instructions: vrcp28, vrsqrt28, vexp2, only vector forms.
Intrinsics include SAE (Suppres All Exceptions) parameter.
http://reviews.llvm.org/D6214
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221774
91177308-0d34-0410-b5e6-
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Jingyue Wu [Wed, 12 Nov 2014 07:19:25 +0000 (07:19 +0000)]
Reverts r221772 which fails tests
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221773
91177308-0d34-0410-b5e6-
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Jingyue Wu [Wed, 12 Nov 2014 06:58:45 +0000 (06:58 +0000)]
Disable indvar widening if arithmetics on the wider type are more expensive
Summary:
IndVarSimplify should not widen an indvar if arithmetics on the wider
indvar are more expensive than those on the narrower indvar. For
instance, although NVPTX64 treats i64 as a legal type, an ADD on i64 is
twice as expensive as that on i32, because the hardware needs to
simulate a 64-bit integer using two 32-bit integers.
Split from D6188, and based on D6195 which adds NVPTXTargetTransformInfo.
Fixes PR21148.
Test Plan:
Added @indvar_32_bit that verifies we do not widen an indvar if the arithmetics
on the wider type are more expensive.
Reviewers: jholewinski, eliben, meheff, atrick
Reviewed By: atrick
Subscribers: jholewinski, llvm-commits
Differential Revision: http://reviews.llvm.org/D6196
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221772
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 12 Nov 2014 04:31:19 +0000 (04:31 +0000)]
Delete dead code. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221770
91177308-0d34-0410-b5e6-
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Bill Schmidt [Wed, 12 Nov 2014 04:19:40 +0000 (04:19 +0000)]
[PowerPC] Add vec_vsx_ld and vec_vsx_st intrinsics
This patch enables the vec_vsx_ld and vec_vsx_st intrinsics for
PowerPC, which provide programmer access to the lxvd2x, lxvw4x,
stxvd2x, and stxvw4x instructions.
New LLVM intrinsics are provided to represent these four instructions
in IntrinsicsPowerPC.td. These are patterned after the similar
intrinsics for lvx and stvx (Altivec). In PPCInstrVSX.td, these
intrinsics are tied to the code gen patterns, with additional patterns
to allow plain vanilla loads and stores to still generate these
instructions.
At -O1 and higher the intrinsics are immediately converted to loads
and stores in InstCombineCalls.cpp. This will open up more
optimization opportunities while still allowing the correct
instructions to be generated. (Similar code exists for aligned
Altivec loads and stores.)
The new intrinsics are added to the code that checks for consecutive
loads and stores in PPCISelLowering.cpp, as well as to
PPCTargetLowering::getTgtMemIntrinsic().
There's a new test to verify the correct instructions are generated.
The loads and stores tend to be reordered, so the test just counts
their number. It runs at -O2, as it's not very effective to test this
at -O0, when many unnecessary loads and stores are generated.
I ended up having to modify vsx-fma-m.ll. It turns out this test case
is slightly unreliable, but I don't know a good way to prevent
problems with it. The xvmaddmdp instructions read and write the same
register, which is one of the multiplicands. Commutativity allows
either to be chosen. If the FMAs are reordered differently than
expected by the test, the register assignment can be different as a
result. Hopefully this doesn't change often.
There is a companion patch for Clang.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221767
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Rafael Espindola [Wed, 12 Nov 2014 03:55:46 +0000 (03:55 +0000)]
Merge StreamableMemoryObject into MemoryObject.
Every MemoryObject is a StreamableMemoryObject since the removal of
StringRefMemoryObject, so just merge the two.
I will clean up the MemoryObject interface in the upcoming commits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221766
91177308-0d34-0410-b5e6-
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David Blaikie [Wed, 12 Nov 2014 03:28:57 +0000 (03:28 +0000)]
Fix non-variadic function_ref cases to match r221753
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221763
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 12 Nov 2014 03:25:45 +0000 (03:25 +0000)]
Don't duplicate name in comments. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221762
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 12 Nov 2014 03:17:33 +0000 (03:17 +0000)]
Revert "Use a function_ref now that it works (r221753)."
This reverts commit r221756.
David Blaikie pointed out it was unsafe.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221761
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 12 Nov 2014 02:35:31 +0000 (02:35 +0000)]
Remove unused method. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221759
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 12 Nov 2014 02:30:38 +0000 (02:30 +0000)]
Make readBytes pure virtual. Every real implementation has it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221758
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 12 Nov 2014 02:27:40 +0000 (02:27 +0000)]
Remove unused method. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221757
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 12 Nov 2014 02:23:37 +0000 (02:23 +0000)]
Use a function_ref now that it works (r221753).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221756
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 12 Nov 2014 02:13:27 +0000 (02:13 +0000)]
Remove the now unused StringRefMemoryObject.h.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221755
91177308-0d34-0410-b5e6-
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David Blaikie [Wed, 12 Nov 2014 02:06:08 +0000 (02:06 +0000)]
Ensure function_refs are copyable even from non-const references
A subtle bug was found where attempting to copy a non-const function_ref
lvalue would actually invoke the generic forwarding constructor (as it
was a closer match - being T& rather than the const T& of the implicit
copy constructor). In the particular case this lead to a dangling
function_ref member (since it had referenced the function_ref passed by
value to its ctor, rather than the outer function_ref that was still
alive)
SFINAE the converting constructor to not be considered if the copy
constructor is available and demonstrate that this causes the copy to
refer to the original functor, not to the function_ref it was copied
from. (without the code change, the test would fail as Y would be
referencing X and Y() would see the result of the mutation to X, ie: 2)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221753
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 12 Nov 2014 02:04:27 +0000 (02:04 +0000)]
Pass an ArrayRef to MCDisassembler::getInstruction.
With this patch MCDisassembler::getInstruction takes an ArrayRef<uint8_t>
instead of a MemoryObject.
Even on X86 there is a maximum size an instruction can have. Given
that, it seems way simpler and more efficient to just pass an ArrayRef
to the disassembler instead of a MemoryObject and have it do a virtual
call every time it wants some extra bytes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221751
91177308-0d34-0410-b5e6-
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Nick Kledzik [Wed, 12 Nov 2014 01:37:45 +0000 (01:37 +0000)]
Object, support both mach-o archive t.o.c file names
For historical reasons archives on mach-o have two possible names for the
file containing the table of contents for the archive: "__.SYMDEF SORTED"
and "__.SYMDEF". But the libObject archive reader only supported the former.
This patch fixes llvm::object::Archive to support both names.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221747
91177308-0d34-0410-b5e6-
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Rafael Espindola [Wed, 12 Nov 2014 01:27:22 +0000 (01:27 +0000)]
Remove a bit of dead code.
Every "real" object file implements this an ptx doesn't use it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221746
91177308-0d34-0410-b5e6-
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Philip Reames [Wed, 12 Nov 2014 00:21:51 +0000 (00:21 +0000)]
Extend intrinsic name mangling to support arrays, named structs, and function types.
Currently, we have a type parameter mechanism for intrinsics. Rather than having to specify a separate intrinsic for each combination of argument and return types, we can specify a single intrinsic with one or more type parameters. These type parameters are passed explicitly to Intrinsic::getDeclaration or can be specified implicitly in the naming of the intrinsic function in an LL file.
Today, the types are limited to integer, floating point, and pointer types. With a goal of supporting symbolic targets for patchpoints and statepoints, this change adds support for function types. The change also includes support for first class aggregate types (named structures and arrays) since these appear in function types we've encountered.
Reviewed by: atrick, ributzka
Differential Revision: http://reviews.llvm.org/D4608
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221742
91177308-0d34-0410-b5e6-
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Matt Arsenault [Tue, 11 Nov 2014 23:48:11 +0000 (23:48 +0000)]
Make TreePattern::error use Twine
The underlying error function already uses a Twine,
and most of the uses build up strings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221740
91177308-0d34-0410-b5e6-
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Chad Rosier [Tue, 11 Nov 2014 23:36:42 +0000 (23:36 +0000)]
[Reassociate] Canonicalize negative constants out of expressions.
Add support for FDiv, which was regressed by the previous commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221738
91177308-0d34-0410-b5e6-
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Philip Reames [Tue, 11 Nov 2014 23:33:19 +0000 (23:33 +0000)]
Canonicalize an assume(load != null) into !nonnull metadata
We currently have two ways of informing the optimizer that the result of a load is never null: metadata and assume. This change converts the second in to the former. This avoids a need to implement optimizations using both forms.
We should probably extend this basic idea to metadata of other forms; in particular, range metadata. We view is that assumes should be considered a "last resort" for when there isn't a more canonical way to represent something.
Reviewed by: Hal
Differential Revision: http://reviews.llvm.org/D5951
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221737
91177308-0d34-0410-b5e6-
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Duncan P. N. Exon Smith [Tue, 11 Nov 2014 23:19:23 +0000 (23:19 +0000)]
libLTO: Allow linker to choose context of modules and codegen
Add API for specifying which `LLVMContext` each `lto_module_t` and
`lto_code_gen_t` is in.
In particular, this enables the following flow:
for (auto &File : Files) {
lto_module_t M = lto_module_create_in_local_context(File...);
querySymbols(M);
lto_module_dispose(M);
}
lto_code_gen_t CG = lto_codegen_create_in_local_context();
for (auto &File : FilesToLink) {
lto_module_t M = lto_module_create_in_codegen_context(File..., CG);
lto_codegen_add_module(CG, M);
lto_module_dispose(M);
}
lto_codegen_compile(CG);
lto_codegen_write_merged_modules(CG, ...);
lto_codegen_dispose(CG);
This flow has a few benefits.
- Only one module (two if you count the combined module in the code
generator) is in memory at a time.
- Metadata (and constants) from files that are parsed to query symbols
but not linked into the code generator don't pollute the global
context.
- The first for loop can be parallelized, since each module is in its
own context.
- When the code generator is disposed, the memory from LTO gets freed.
rdar://problem/
18767512
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221733
91177308-0d34-0410-b5e6-
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Sanjay Patel [Tue, 11 Nov 2014 23:13:15 +0000 (23:13 +0000)]
Initialize new subtarget feature variable for generating reciprocal estimate instructions.
This was missed in r221706.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221731
91177308-0d34-0410-b5e6-
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Duncan P. N. Exon Smith [Tue, 11 Nov 2014 23:13:10 +0000 (23:13 +0000)]
libLTO: Assert if LTOCodeGenerator and LTOModule are from different contexts
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221730
91177308-0d34-0410-b5e6-
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Juergen Ributzka [Tue, 11 Nov 2014 23:10:44 +0000 (23:10 +0000)]
[FastISel][AArch64] Add support for fabs intrinsic.
Lower the llvm.fabs intrinsic to the 'fabs' MI instruction.
This fixes rdar://problem/
18946552.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221729
91177308-0d34-0410-b5e6-
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Duncan P. N. Exon Smith [Tue, 11 Nov 2014 23:08:05 +0000 (23:08 +0000)]
libLTO: Allow LTOModule to own a context
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221728
91177308-0d34-0410-b5e6-
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Duncan P. N. Exon Smith [Tue, 11 Nov 2014 23:03:29 +0000 (23:03 +0000)]
libLTO: Allow LTOCodeGenerator to own a context
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221726
91177308-0d34-0410-b5e6-
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Kostya Serebryany [Tue, 11 Nov 2014 23:02:57 +0000 (23:02 +0000)]
[asan] adding ShadowOffset64 for mips64, patch by Kumar Sukhani
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221725
91177308-0d34-0410-b5e6-
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Chad Rosier [Tue, 11 Nov 2014 22:58:35 +0000 (22:58 +0000)]
[Reassociate] Canonicalize negative constants out of expressions.
This is a reapplication of r221171, but we only perform the transformation
on expressions which include a multiplication. We do not transform rem/div
operations as this doesn't appear to be safe in all cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221721
91177308-0d34-0410-b5e6-
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Kostya Serebryany [Tue, 11 Nov 2014 22:14:37 +0000 (22:14 +0000)]
Move asan-coverage into a separate phase.
Summary:
This change moves asan-coverage instrumentation
into a separate Module pass.
The other part of the change in clang introduces a new flag
-fsanitize-coverage=N.
Another small patch will update tests in compiler-rt.
With this patch no functionality change is expected except for the flag name.
The following changes will make the coverage instrumentation work with tsan/msan
Test Plan: Run regression tests, chromium.
Reviewers: nlewycky, samsonov
Reviewed By: nlewycky, samsonov
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D6152
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221718
91177308-0d34-0410-b5e6-
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Duncan P. N. Exon Smith [Tue, 11 Nov 2014 21:30:22 +0000 (21:30 +0000)]
Revert "IR: MDNode => Value"
Instead, we're going to separate metadata from the Value hierarchy. See
PR21532.
This reverts commit r221375.
This reverts commit r221373.
This reverts commit r221359.
This reverts commit r221167.
This reverts commit r221027.
This reverts commit r221024.
This reverts commit r221023.
This reverts commit r220995.
This reverts commit r220994.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221711
91177308-0d34-0410-b5e6-
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Tom Roeder [Tue, 11 Nov 2014 21:26:33 +0000 (21:26 +0000)]
Fix build break: remove unused variable in FCFI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221710
91177308-0d34-0410-b5e6-
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Frederic Riss [Tue, 11 Nov 2014 21:21:08 +0000 (21:21 +0000)]
Totally forget deallocated SDNodes in SDDbgInfo.
What would happen before that commit is that the SDDbgValues associated with
a deallocated SDNode would be marked Invalidated, but SDDbgInfo would keep
a map entry keyed by the SDNode pointer pointing to this list of invalidated
SDDbgNodes. As the memory gets reused, the list might get wrongly associated
with another new SDNode. As the SDDbgValues are cloned when they are transfered,
this can lead to an exponential number of SDDbgValues being produced during
DAGCombine like in http://llvm.org/bugs/show_bug.cgi?id=20893
Note that the previous behavior wasn't really buggy as the invalidation made
sure that the SDDbgValues won't be used. This commit can be considered a
memory optimization and as such is really hard to validate in a unit-test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221709
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Tom Roeder [Tue, 11 Nov 2014 21:08:02 +0000 (21:08 +0000)]
Add Forward Control-Flow Integrity.
This commit adds a new pass that can inject checks before indirect calls to
make sure that these calls target known locations. It supports three types of
checks and, at compile time, it can take the name of a custom function to call
when an indirect call check fails. The default failure function ignores the
error and continues.
This pass incidentally moves the function JumpInstrTables::transformType from
private to public and makes it static (with a new argument that specifies the
table type to use); this is so that the CFI code can transform function types
at call sites to determine which jump-instruction table to use for the check at
that site.
Also, this removes support for jumptables in ARM, pending further performance
analysis and discussion.
Review: http://reviews.llvm.org/D4167
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221708
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Colin LeMahieu [Tue, 11 Nov 2014 21:03:09 +0000 (21:03 +0000)]
[llvm-mc] Fixing case where if a file ended with non-newline whitespace or a comma it would access invalid memory.
Cleaned up parse loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221707
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Sanjay Patel [Tue, 11 Nov 2014 20:51:00 +0000 (20:51 +0000)]
Use rcpss/rcpps (X86) to speed up reciprocal calcs (PR21385).
This is a first step for generating SSE rcp instructions for reciprocal
calcs when fast-math allows it. This is very similar to the rsqrt optimization
enabled in D5658 ( http://reviews.llvm.org/rL220570 ).
For now, be conservative and only enable this for AMD btver2 where performance
improves significantly both in terms of latency and throughput.
We may never enable this codegen for Intel Core* chips because the divider circuits
are just too fast. On SandyBridge, divss can be as fast as 10 cycles versus the 21
cycle critical path for the rcp + mul + sub + mul + add estimate.
Follow-on patches may allow configuration of the number of Newton-Raphson refinement
steps, add AVX512 support, and enable the optimization for more chips.
More background here: http://llvm.org/bugs/show_bug.cgi?id=21385
Differential Revision: http://reviews.llvm.org/D6175
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221706
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Rafael Espindola [Tue, 11 Nov 2014 20:49:16 +0000 (20:49 +0000)]
Simplify testcase. NFC.
Thanks to Filipe Cabecinhas for the tip.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221705
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Bill Schmidt [Tue, 11 Nov 2014 20:44:09 +0000 (20:44 +0000)]
[PowerPC] Replace foul hackery with real calls to __tls_get_addr
My original support for the general dynamic and local dynamic TLS
models contained some fairly obtuse hacks to generate calls to
__tls_get_addr when lowering a TargetGlobalAddress. Rather than
generating real calls, special GET_TLS_ADDR nodes were used to wrap
the calls and only reveal them at assembly time. I attempted to
provide correct parameter and return values by chaining CopyToReg and
CopyFromReg nodes onto the GET_TLS_ADDR nodes, but this was also not
fully correct. Problems were seen with two back-to-back stores to TLS
variables, where the call sequences ended up overlapping with unhappy
results. Additionally, since these weren't real calls, the proper
register side effects of a call were not recorded, so clobbered values
were kept live across the calls.
The proper thing to do is to lower these into calls in the first
place. This is relatively straightforward; see the changes to
PPCTargetLowering::LowerGlobalTLSAddress() in PPCISelLowering.cpp.
The changes here are standard call lowering, except that we need to
track the fact that these calls will require a relocation. This is
done by adding a machine operand flag of MO_TLSLD or MO_TLSGD to the
TargetGlobalAddress operand that appears earlier in the sequence.
The calls to LowerCallTo() eventually find their way to
LowerCall_64SVR4() or LowerCall_32SVR4(), which call FinishCall(),
which calls PrepareCall(). In PrepareCall(), we detect the calls to
__tls_get_addr and immediately snag the TargetGlobalTLSAddress with
the annotated relocation information. This becomes an extra operand
on the call following the callee, which is expected for nodes of type
tlscall. We change the call opcode to CALL_TLS for this case. Back
in FinishCall(), we change it again to CALL_NOP_TLS for 64-bit only,
since we require a TOC-restore nop following the call for the 64-bit
ABIs.
During selection, patterns in PPCInstrInfo.td and PPCInstr64Bit.td
convert the CALL_TLS nodes into BL_TLS nodes, and convert the
CALL_NOP_TLS nodes into BL8_NOP_TLS nodes. This replaces the code
removed from PPCAsmPrinter.cpp, as the BL_TLS or BL8_NOP_TLS
nodes can now be emitted normally using their patterns and the
associated printTLSCall print method.
Finally, as a result of these changes, all references to get-tls-addr
in its various guises are no longer used, so they have been removed.
There are existing TLS tests to verify the changes haven't messed
anything up). I've added one new test that verifies that the problem
with the original code has been fixed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221703
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Rafael Espindola [Tue, 11 Nov 2014 19:46:36 +0000 (19:46 +0000)]
Use a 8 bit immediate when possible.
This fixes pr21529.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221700
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Kevin Enderby [Tue, 11 Nov 2014 19:16:45 +0000 (19:16 +0000)]
Fix a warning about ‘r_type’ may be used uninitialized.
Thanks to Aaron Ballman for noticing this!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221696
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Dario Domizioli [Tue, 11 Nov 2014 18:44:49 +0000 (18:44 +0000)]
[X86][ELF] Fix PR20243 - leaf frame pointer bug with TLS access
The ISel lowering for global TLS access in PIC mode was creating a pseudo
instruction that is later expanded to a call, but the code was not
setting the hasCalls flag in the MachineFrameInfo alongside the adjustsStack
flag. This caused some functions to be mistakenly recognized as leaf functions,
and this in turn affected the decision to eliminate the frame pointer.
With the fix, hasCalls is properly set and the leaf frame pointer is correctly
preserved.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221695
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Oliver Stannard [Tue, 11 Nov 2014 17:36:01 +0000 (17:36 +0000)]
LLVM incorrectly folds xor into select
LLVM replaces the SelectionDAG pattern (xor (set_cc cc x y) 1) with
(set_cc !cc x y), which is only correct when the xor has type i1.
Instead, we should check that the constant operand to the xor is all
ones.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221693
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Vasileios Kalintiris [Tue, 11 Nov 2014 11:43:55 +0000 (11:43 +0000)]
[mips] Add preliminary support for the MIPS II target.
Summary:
This patch enables code generation for the MIPS II target. Pre-Mips32
targets don't have the MUL instruction, so we add the correspondent
pattern that uses the MULT/MFLO combination in order to retrieve the
product.
This is WIP as we don't support code generation for select nodes due to
the lack of conditional-move instructions.
Reviewers: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D6150
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221686
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Vasileios Kalintiris [Tue, 11 Nov 2014 11:22:39 +0000 (11:22 +0000)]
[mips] Add hardware register name "hwr_ulr" ($29)
The canonical name when printing assembly is still $29. The reason is that
GAS does not accept "$hwr_ulr" at the moment.
This addresses the comments from r221307, which reverted the original
commit r221299.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221685
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Andrea Di Biagio [Tue, 11 Nov 2014 11:20:31 +0000 (11:20 +0000)]
[X86] Add missing check for 'isINSERTPSMask' in method 'isShuffleMaskLegal'.
This helps the DAGCombiner to identify more opportunities to fold shuffles.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221684
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Vasileios Kalintiris [Tue, 11 Nov 2014 10:31:31 +0000 (10:31 +0000)]
Recommit "[mips] Add names and tests for the hardware registers"
The original commit r221299 was reverted in r221307. I removed the name
"hrw_ulr" ($29) from the original commit because two tests were failing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221681
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David Majnemer [Tue, 11 Nov 2014 09:58:25 +0000 (09:58 +0000)]
llvm-objdump: Skip empty sections when dumping contents
Empty sections are just noise when using objdump.
This is similar to what binutils does.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221680
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Manuel Klimek [Tue, 11 Nov 2014 08:53:18 +0000 (08:53 +0000)]
Was convinced in commit comments that requiring a specific python version is the wrong approach; reverting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221679
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David Majnemer [Tue, 11 Nov 2014 08:43:57 +0000 (08:43 +0000)]
MC, COFF: Use relocations for function references inside the section
Referencing one symbol from another in the same section does not
generally require a relocation. However, the MS linker has a feature
called /INCREMENTAL which enables incremental links. It achieves this
by creating thunks to the actual function and redirecting all
relocations to point to the thunk.
This breaks down with the old scheme if you have a function which
references, say, itself. On x86_64, we would use %rip relative
addressing to reference the start of the function from out current
position. This would lead to miscompiles because other references might
reference the thunk instead, breaking function pointer equality.
This fixes PR21520.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221678
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NAKAMURA Takumi [Tue, 11 Nov 2014 07:57:25 +0000 (07:57 +0000)]
[CMake] llvm-shlib: Prune redundant components, AsmPrinter, MC, and SelectionDAG.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221675
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Suyog Sarda [Tue, 11 Nov 2014 07:39:27 +0000 (07:39 +0000)]
Addition to r216371 (SLP and Loop Vectorization) and r218607 where
cost model for signed division by power of 2 was improved for AArch64.
The revision r218607 missed test case for Loop Vectorization.
Adding it in this revision.
Differential Revision: http://reviews.llvm.org/D6181
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221674
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Craig Topper [Tue, 11 Nov 2014 07:32:32 +0000 (07:32 +0000)]
Use uint64_t as the type for the X86 TSFlag format enum. Allows removal of the VEXShift hack that was used to access the higher bits of TSFlags.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221673
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Michael Kuperstein [Tue, 11 Nov 2014 07:07:40 +0000 (07:07 +0000)]
[X86] Fix pattern match for 32-to-64-bit zext in the presence of AssertSext
This fixes an issue with matching trunc -> assertsext -> zext on x86-64, which would not zero the high 32-bits. See PR20494 for details.
Recommitting - This time, with a hopefully working test.
Differential Revision: http://reviews.llvm.org/D6128
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221672
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Rafael Espindola [Tue, 11 Nov 2014 05:27:12 +0000 (05:27 +0000)]
Only run the gold plugin tests if gold supports the targets we test with.
This fixes pr21345.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221669
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Jingyue Wu [Tue, 11 Nov 2014 05:24:04 +0000 (05:24 +0000)]
[NVPTX] Remove dead code in NVPTXTargetTransformInfo (NFC)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221668
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Rafael Espindola [Tue, 11 Nov 2014 05:18:41 +0000 (05:18 +0000)]
MCAsmParserExtension has a copy of the MCAsmParser. Use it.
Base classes were storing a second copy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221667
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Rafael Espindola [Tue, 11 Nov 2014 05:11:47 +0000 (05:11 +0000)]
Add const. NFC.
This adds const to a few methods that already return const references or
creates a const version when they reterun non-const references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221666
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Rafael Espindola [Tue, 11 Nov 2014 04:58:32 +0000 (04:58 +0000)]
Don't duplicate names in comments. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221665
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Rafael Espindola [Tue, 11 Nov 2014 04:49:14 +0000 (04:49 +0000)]
Don't repeat name in comment. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221664
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Quentin Colombet [Tue, 11 Nov 2014 02:23:47 +0000 (02:23 +0000)]
[X86] Custom lower UINT_TO_FP from v4f32 to v4i32, and for v8f32 to v8i32 if
AVX2 is available.
According to IACA, the new lowering has a throughput of 8 cycles instead of 13
with the previous one.
Althought this lowering kicks in some SPECs benchmarks, the performance
improvement was within the noise.
Correctness testing has been done for the whole range of uint32_t with the
following program:
uint4 v = (uint4) {0,1,2,3};
uint32_t i;
//Check correctness over entire range for uint4 -> float4 conversion
for( i = 0; i < 1U << (32-2); i++ )
{
float4 t = test(v);
float4 c = correct(v);
if( 0xf != _mm_movemask_ps( t == c ))
{
printf( "Error @ %vx: %vf vs. %vf\n", v, c, t);
return -1;
}
v += 4;
}
Where "correct" is the old lowering and "test" the new one.
The patch adds a test case for the two custom lowering instruction.
It also modifies the vector cost model, which is why cast.ll and uitofp.ll are
modified.
2009-02-26-MachineLICMBug.ll is also modified because we now hoist 7
instructions instead of 4 (3 more constant loads).
rdar://problem/
18153096>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221657
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Nico Weber [Tue, 11 Nov 2014 01:13:42 +0000 (01:13 +0000)]
speling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221652
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Chad Rosier [Mon, 10 Nov 2014 23:02:03 +0000 (23:02 +0000)]
[yaml2obj] Support AArch64 relocations.
Patch by Daniel Stewart <stewartd@codeaurora.org>!
Phabricator Revision: http://reviews.llvm.org/D6192
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221639
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Rafael Espindola [Mon, 10 Nov 2014 22:36:04 +0000 (22:36 +0000)]
configure.ac lives in autoconf/, not autotools/
Patch by Palmer Dabbelt!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221638
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Michael Kuperstein [Mon, 10 Nov 2014 21:07:41 +0000 (21:07 +0000)]
Reverting r221626 due to a too-strict test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221629
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Juergen Ributzka [Mon, 10 Nov 2014 21:05:31 +0000 (21:05 +0000)]
[AArch64][FastISel] Fix kill flags for integer extends.
In the case we optimize an integer extend away and replace it directly with the
source register, we also have to clear all kill flags at all its uses.
This is necessary, because the orignal IR instruction might be trivially dead,
but we replaced it with a nop at MI level.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221628
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Juergen Ributzka [Mon, 10 Nov 2014 21:05:27 +0000 (21:05 +0000)]
[SwitchLowering] Fix the "fixPhis" function.
Switch statements may have more than one incoming edge into the same BB if they
all have the same value. When the switch statement is converted these incoming
edges are now coming from multiple BBs. Updating all incoming values to be from
a single BB is incorrect and would generate invalid LLVM IR.
The fix is to only update the first occurrence of an incoming value. Switch
lowering will perform subsequent calls to this helper function for each incoming
edge with a new basic block - updating all edges in the process.
This fixes rdar://problem/
18916275.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221627
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Michael Kuperstein [Mon, 10 Nov 2014 20:40:21 +0000 (20:40 +0000)]
[X86] Fix pattern match for 32-to-64-bit zext in the presence of AssertSext
This fixes an issue with matching trunc -> assertsext -> zext on x86-64, which would not zero the high 32-bits.
See PR20494 for details.
Differential Revision: http://reviews.llvm.org/D6128
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221626
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Rafael Espindola [Mon, 10 Nov 2014 18:41:59 +0000 (18:41 +0000)]
Copy externally_initialized in GlobalVariable::copyAttributesFrom.
Patch by Kevin Frei!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221620
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Jingyue Wu [Mon, 10 Nov 2014 18:38:25 +0000 (18:38 +0000)]
[NVPTX] Add an NVPTX-specific TargetTransformInfo
Summary:
It currently only implements hasBranchDivergence, and will be extended
in later diffs.
Split from D6188.
Test Plan: make check-all
Reviewers: jholewinski
Reviewed By: jholewinski
Subscribers: llvm-commits, meheff, eliben, jholewinski
Differential Revision: http://reviews.llvm.org/D6195
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221619
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Rafael Espindola [Mon, 10 Nov 2014 18:11:10 +0000 (18:11 +0000)]
Misc style fixes. NFC.
This fixes a few cases of:
* Wrong variable name style.
* Lines longer than 80 columns.
* Repeated names in comments.
* clang-format of the above.
This make the next patch a lot easier to read.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221615
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Vasileios Kalintiris [Mon, 10 Nov 2014 17:37:53 +0000 (17:37 +0000)]
Fix extra semicolon warning. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221613
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Zoran Jovanovic [Mon, 10 Nov 2014 17:27:56 +0000 (17:27 +0000)]
[mips][microMIPS] Fix issue with delay slot filler and microMIPS
Differential Revision: http://reviews.llvm.org/D6193
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221612
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Rafael Espindola [Mon, 10 Nov 2014 16:31:06 +0000 (16:31 +0000)]
Fix variable names and comment style. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221608
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Daniel Sanders [Mon, 10 Nov 2014 15:57:53 +0000 (15:57 +0000)]
[mips] Fix sret arguments for N32/N64 which were accidentally broken in r221534.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221604
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Manuel Klimek [Mon, 10 Nov 2014 15:29:29 +0000 (15:29 +0000)]
Mark test using python as REQUIRES: python27.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221598
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NAKAMURA Takumi [Mon, 10 Nov 2014 15:04:26 +0000 (15:04 +0000)]
[CMake] llvm-c-test: Use libLLVM.so if it is available.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221592
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NAKAMURA Takumi [Mon, 10 Nov 2014 15:04:02 +0000 (15:04 +0000)]
[CMake] Let llvm-shlib work on Linux with --whole-archive.
FIXME: It should work on not only Linux but elf-targeting gnu ld.
For example if LLVM_DYLIB_COMPONENTS is "BitWriter Support", CMake emits the command line like;
-Wl,--whole-archive
lib/libLLVMBitWriter.a
lib/libLLVMSupport.a *1
-Wl,--no-whole-archive
lib/libLLVMCore.a
lib/libLLVMSupport.a *2
-lrt -ldl -ltinfo -lpthread -lm
It works since symbols in LLVMCore is resolved with not *2 but *1.
Unfortunately, --gc-sections is not powerful in this case to prune unused "visibility(default)" entries.
I am still experimenting other way not to rely on --whole-archive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221591
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NAKAMURA Takumi [Mon, 10 Nov 2014 15:03:02 +0000 (15:03 +0000)]
[CMake] Move llvm-shlib in prior to other tools.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221590
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NAKAMURA Takumi [Sat, 8 Nov 2014 14:12:30 +0000 (14:12 +0000)]
[CMake] llvm-shlib: Add possibly missing BitReader and MCDisassembler for llvm-c.
FYI, 3 modules below are redundant in trunk;
AsmPrinter
MC
SelectionDAG
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221579
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Matt Arsenault [Sat, 8 Nov 2014 00:02:57 +0000 (00:02 +0000)]
R600/SI: Fix broken check prefixes in test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221565
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Saleem Abdulrasool [Sat, 8 Nov 2014 00:00:50 +0000 (00:00 +0000)]
Transforms: address some late comments
We already use the llvm namespace. Remove the unnecessary prefix. Use the
StringRef::equals method to compare with C strings rather than instantiating
std::strings.
Addresses late review comments from David Majnemer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221564
91177308-0d34-0410-b5e6-
96231b3b80d8
Saleem Abdulrasool [Sat, 8 Nov 2014 00:00:47 +0000 (00:00 +0000)]
Transforms: sort source files in build
Sort target sources. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221563
91177308-0d34-0410-b5e6-
96231b3b80d8