Matt Arsenault [Tue, 3 Nov 2015 22:50:27 +0000 (22:50 +0000)]
AMDGPU: Fix off by one error in register parsing
If trying to use one past the end, this would assert.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252008
91177308-0d34-0410-b5e6-
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Derek Schuff [Tue, 3 Nov 2015 22:40:45 +0000 (22:40 +0000)]
Address nit
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252004
91177308-0d34-0410-b5e6-
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Derek Schuff [Tue, 3 Nov 2015 22:40:43 +0000 (22:40 +0000)]
Align whitespace
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252003
91177308-0d34-0410-b5e6-
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Derek Schuff [Tue, 3 Nov 2015 22:40:40 +0000 (22:40 +0000)]
[WebAssembly] Support wasm select operator
Summary:
Add support for wasm's select operator, and lower LLVM's select DAG node
to it.
Reviewers: sunfish
Subscribers: dschuff, llvm-commits, jfb
Differential Revision: http://reviews.llvm.org/D14295
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252002
91177308-0d34-0410-b5e6-
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Matt Arsenault [Tue, 3 Nov 2015 22:39:52 +0000 (22:39 +0000)]
AMDGPU: s[102:103] is unavailable on VI
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252000
91177308-0d34-0410-b5e6-
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Matt Arsenault [Tue, 3 Nov 2015 22:39:50 +0000 (22:39 +0000)]
AMDGPU: Define correct number of SGPRs
There are actually 104 so 2 were missing.
More assembler tests with high register number tuples
will be included in later patches.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251999
91177308-0d34-0410-b5e6-
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Matt Arsenault [Tue, 3 Nov 2015 22:30:15 +0000 (22:30 +0000)]
AMDGPU: Make findUsedSGPR more readable
Add more comments etc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251996
91177308-0d34-0410-b5e6-
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Matt Arsenault [Tue, 3 Nov 2015 22:30:13 +0000 (22:30 +0000)]
AMDGPU: Initialize SIFixSGPRCopies so -print-after works
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251995
91177308-0d34-0410-b5e6-
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Matt Arsenault [Tue, 3 Nov 2015 22:30:08 +0000 (22:30 +0000)]
AMDGPU: Alphabetize includes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251994
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Fiona Glaser [Tue, 3 Nov 2015 22:23:39 +0000 (22:23 +0000)]
InstCombine: fix sinking of convergent calls
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251991
91177308-0d34-0410-b5e6-
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Simon Pilgrim [Tue, 3 Nov 2015 22:21:38 +0000 (22:21 +0000)]
[SelectionDAG] Use existing constant nodes instead of recreating them. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251990
91177308-0d34-0410-b5e6-
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Alexey Samsonov [Tue, 3 Nov 2015 22:20:52 +0000 (22:20 +0000)]
[LLVMSymbolize] Factor out the logic for printing structs from DIContext. NFC.
Introduce DIPrinter which takes care of rendering DILineInfo and
friends. This allows LLVMSymbolizer class to return a structured data
instead of plain std::strings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251989
91177308-0d34-0410-b5e6-
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Simon Pilgrim [Tue, 3 Nov 2015 21:58:35 +0000 (21:58 +0000)]
[X86][AVX] Tweaked shuffle stack folding tests
To avoid alternative lowerings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251986
91177308-0d34-0410-b5e6-
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Adam Nemet [Tue, 3 Nov 2015 21:39:52 +0000 (21:39 +0000)]
[LAA] LLE 3/6: Rename InterestingDependence to Dependences, NFC
Summary:
We now collect all types of dependences including lexically forward
deps not just "interesting" ones.
Reviewers: hfinkel
Subscribers: rengolin, llvm-commits
Differential Revision: http://reviews.llvm.org/D13256
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251985
91177308-0d34-0410-b5e6-
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Simon Pilgrim [Tue, 3 Nov 2015 21:39:30 +0000 (21:39 +0000)]
[X86][AVX512] Fixed shuffle test name to match shuffle
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251984
91177308-0d34-0410-b5e6-
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Alexey Samsonov [Tue, 3 Nov 2015 21:36:13 +0000 (21:36 +0000)]
[LLVMSymbolize] Move demangling away from printing routines. NFC.
Make printDILineInfo and friends responsible for just rendering the
contents of the structures, demangling should actually be performed
earlier, when we have the information about the originating
SymbolizableModule at hand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251981
91177308-0d34-0410-b5e6-
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Davide Italiano [Tue, 3 Nov 2015 20:32:23 +0000 (20:32 +0000)]
[SimplifyLibCalls] Add a new transformation: pow(exp(x), y) -> exp(x*y)
This one is enabled only under -ffast-math (due to rounding/overflows)
but allows us to emit shorter code.
Before (on FreeBSD x86-64):
4007f0: 50 push %rax
4007f1: f2 0f 11 0c 24 movsd %xmm1,(%rsp)
4007f6: e8 75 fd ff ff callq 400570 <exp2@plt>
4007fb: f2 0f 10 0c 24 movsd (%rsp),%xmm1
400800: 58 pop %rax
400801: e9 7a fd ff ff jmpq 400580 <pow@plt>
400806: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
40080d: 00 00 00
After:
4007b0: f2 0f 59 c1 mulsd %xmm1,%xmm0
4007b4: e9 87 fd ff ff jmpq 400540 <exp2@plt>
4007b9: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
Differential Revision: http://reviews.llvm.org/D14045
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251976
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Simon Pilgrim [Tue, 3 Nov 2015 20:27:01 +0000 (20:27 +0000)]
[X86][XOP] Add support for the matching of the VPCMOV bit select instruction
XOP has the VPCMOV instruction that performs the common vector bit select operation OR( AND( SRC1, SRC3 ), AND( SRC2, ~SRC3 ) )
This patch adds tablegen pattern matching for this instruction.
Differential Revision: http://reviews.llvm.org/D8841
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251975
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Rui Ueyama [Tue, 3 Nov 2015 20:16:18 +0000 (20:16 +0000)]
llmv-pdbdump: Make BuiltinDumper shorter. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251974
91177308-0d34-0410-b5e6-
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Adam Nemet [Tue, 3 Nov 2015 20:13:43 +0000 (20:13 +0000)]
[LAA] LLE 2/6: Fix a NoDep case that should be a Forward dependence
Summary:
When the dependence distance in zero then we have a loop-independent
dependence from the earlier to the later access.
No current client of LAA uses forward dependences so other than
potentially hitting the MaxDependences threshold earlier, this change
shouldn't affect anything right now.
This and the previous patch were tested together for compile-time
regression. None found in LNT/SPEC.
Reviewers: hfinkel
Subscribers: rengolin, llvm-commits
Differential Revision: http://reviews.llvm.org/D13255
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251973
91177308-0d34-0410-b5e6-
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Adam Nemet [Tue, 3 Nov 2015 20:13:23 +0000 (20:13 +0000)]
[LAA] LLE 1/6: Expose Forward dependences
Summary:
Before this change, we didn't use to collect forward dependences since
none of the current clients (LV, LDist) required them.
The motivation to also collect forward dependences is a new pass
LoopLoadElimination (LLE) which discovers store-to-load forwarding
opportunities across the loop's backedge. The pass uses both lexically
forward or backward loop-carried dependences to detect these
opportunities.
The new pass also analyzes loop-independent (forward) dependences since
they can conflict with the loop-carried dependences in terms of how the
data flows through memory.
The newly added test only covers loop-carried forward dependences
because loop-independent ones are currently categorized as NoDep. The
next patch will fix this.
The two patches were tested together for compile-time regression. None
found in LNT/SPEC.
Note that with this change LAA provides all dependences rather than just
"interesting" ones. A subsequent NFC patch will remove the now trivial
isInterestingDependence and rename the APIs.
Reviewers: hfinkel
Subscribers: jmolloy, rengolin, llvm-commits
Differential Revision: http://reviews.llvm.org/D13254
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251972
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Rafael Espindola [Tue, 3 Nov 2015 20:02:22 +0000 (20:02 +0000)]
Don't create empty sections just to look like gas.
We are long past the time when this much bug for bug compatibility was
useful.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251970
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Rafael Espindola [Tue, 3 Nov 2015 19:38:19 +0000 (19:38 +0000)]
Relax a few more overspecified tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251967
91177308-0d34-0410-b5e6-
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Teresa Johnson [Tue, 3 Nov 2015 19:36:04 +0000 (19:36 +0000)]
Revert "Move metadata linking after lazy global materialization/linking."
This reverts commit r251926. I believe this is causing an LTO
bootstrapping bot failure
(http://lab.llvm.org:8080/green/job/llvm-stage2-cmake-RgLTO_build/3669/).
Haven't been able to repro it yet, but after looking at the metadata I
am pretty sure I know what is going on.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251965
91177308-0d34-0410-b5e6-
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Rafael Espindola [Tue, 3 Nov 2015 19:24:17 +0000 (19:24 +0000)]
Remove unnecessary dependency on section and string positions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251964
91177308-0d34-0410-b5e6-
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Kostya Serebryany [Tue, 3 Nov 2015 18:57:25 +0000 (18:57 +0000)]
[libFuzzer] make -test_single_input more reliable: make sure the input's size is equal to it's capacity
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251961
91177308-0d34-0410-b5e6-
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Rafael Espindola [Tue, 3 Nov 2015 18:55:58 +0000 (18:55 +0000)]
Delete dead code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251960
91177308-0d34-0410-b5e6-
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Rafael Espindola [Tue, 3 Nov 2015 18:50:51 +0000 (18:50 +0000)]
Simplify local common output.
We now create them as they are found and use higher level APIs.
This is a step in avoiding creating unnecessary sections.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251958
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Igor Laevsky [Tue, 3 Nov 2015 18:37:40 +0000 (18:37 +0000)]
[CodegenPrepare] Do not rematerialize gc.relocates across different basic blocks
Differential Revision: http://reviews.llvm.org/D14258
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251957
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Rafael Espindola [Tue, 3 Nov 2015 18:04:07 +0000 (18:04 +0000)]
Move code out of a loop and use a range loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251952
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Rafael Espindola [Tue, 3 Nov 2015 16:40:37 +0000 (16:40 +0000)]
Revert "Revert "[Orc] Directly emit machine code for the x86 resolver block and trampolines.""
This reverts commit r251937.
The test was updated to the new API, bring the API back.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251944
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Lang Hames [Tue, 3 Nov 2015 16:35:10 +0000 (16:35 +0000)]
[Kaleidoscope][Orc] Fix the fully_lazy Orc Kaleidoscope example.
r251933 changed the Orc compile callbacks API, which broke this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251942
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Silviu Baranga [Tue, 3 Nov 2015 16:27:04 +0000 (16:27 +0000)]
Fix PR25372 - teach replaceCongruentPHIs to handle cases where SE evaluates a PHI to a SCEVConstant
Summary:
Since now Scalar Evolution can create non-add rec expressions for PHI
nodes, it can also create SCEVConstant expressions. This will confuse
replaceCongruentPHIs, which previously relied on the fact that SCEV
could not produce constants in this case.
We will now replace the node with a constant in these cases - or avoid
processing the Phi in case of a type mismatch.
Reviewers: sanjoy
Subscribers: llvm-commits, majnemer
Differential Revision: http://reviews.llvm.org/D14230
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251938
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Rafael Espindola [Tue, 3 Nov 2015 16:25:20 +0000 (16:25 +0000)]
Revert "[Orc] Directly emit machine code for the x86 resolver block and trampolines."
This reverts commit r251933.
It broke the build of examples/Kaleidoscope/Orc/fully_lazy/toy.cpp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251937
91177308-0d34-0410-b5e6-
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David Blaikie [Tue, 3 Nov 2015 16:23:21 +0000 (16:23 +0000)]
Kaleidoscope-ch2: Remove the dependence on LLVM by cloning make_unique into this project
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251936
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Lang Hames [Tue, 3 Nov 2015 16:10:18 +0000 (16:10 +0000)]
[Orc] Directly emit machine code for the x86 resolver block and trampolines.
Bypassing LLVM for this has a number of benefits:
1) Laziness support becomes asm-syntax agnostic (previously lazy jitting didn't
work on Windows as the resolver block was in Darwin asm).
2) For cross-process JITs, it allows resolver blocks and trampolines to be
emitted directly in the target process, reducing cross process traffic.
3) It should be marginally faster.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251933
91177308-0d34-0410-b5e6-
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Teresa Johnson [Tue, 3 Nov 2015 15:11:27 +0000 (15:11 +0000)]
Move metadata linking after lazy global materialization/linking.
Summary:
Currently, named metadata is linked before the LazilyLinkGlobalValues
list is walked and materialized/linked. As a result, references
from DISubprogram and DIGlobalVariable metadata to yet unmaterialized
functions and variables cause them to be added to the lazy linking
list and their definitions are materialized and linked.
This makes the llvm-link -only-needed option not have the intended
effect when debug information is present, as the otherwise unneeded
functions/variables are still linked in.
Additionally, for ThinLTO I have implemented a mechanism to only link
in debug metadata needed by imported functions. Moving named metadata
linking after lazy GV linking will facilitate applying this mechanism
to the LTO and "llvm-link -only-needed" cases as well.
Reviewers: dexonsmith, tra, dblaikie
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D14195
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251926
91177308-0d34-0410-b5e6-
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Teresa Johnson [Tue, 3 Nov 2015 15:10:50 +0000 (15:10 +0000)]
Pass enum instead of bool to new linkInModule call in llvm-link
A new call I added to linkInModule from llvm-link in r251866
was still passing in a boolean for an argument that was changed to an
enum in r246561. I didn't catch this in my merge since the bool false
matched the flag value it mapped to.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251925
91177308-0d34-0410-b5e6-
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Filipe Cabecinhas [Tue, 3 Nov 2015 13:48:26 +0000 (13:48 +0000)]
Don't assert if materializing before seeing any function bodies
This assert was reachable from user input. A minimized test case (no
FUNCTION_BLOCK_ID record) is attached.
Bug found with afl-fuzz
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251910
91177308-0d34-0410-b5e6-
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Filipe Cabecinhas [Tue, 3 Nov 2015 13:48:21 +0000 (13:48 +0000)]
Don't use Twine objects after their lifetimes end.
No test, since it would depend on what the compiler can optimize/reuse.
My next commit made this bug visible on Linux Release compiles with some
versions of gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251909
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Elena Demikhovsky [Tue, 3 Nov 2015 10:29:34 +0000 (10:29 +0000)]
LoopVectorizer - skip 'bitcast' between GEP and load.
Skipping 'bitcast' in this case allows to vectorize load:
%arrayidx = getelementptr inbounds double*, double** %in, i64 %indvars.iv
%tmp53 = bitcast double** %arrayidx to i64*
%tmp54 = load i64, i64* %tmp53, align 8
Differential Revision http://reviews.llvm.org/D14112
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251907
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Michael Kuperstein [Tue, 3 Nov 2015 08:17:25 +0000 (08:17 +0000)]
[X86] Generate .cfi_adjust_cfa_offset correctly when pushing arguments
When push instructions are being used to pass function arguments on
the stack, and either EH or debugging are enabled, we need to generate
.cfi_adjust_cfa_offset directives appropriately. For (synch) EH, it is
enough for the CFA offset to be correct at every call site, while
for debugging we want to be correct after every push.
Darwin does not support this well, so don't use pushes whenever it
would be required.
Differential Revision: http://reviews.llvm.org/D13767
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251904
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Igor Breger [Tue, 3 Nov 2015 07:30:17 +0000 (07:30 +0000)]
AVX512: add encoding tests for vmovq/d instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251903
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Tobias Grosser [Tue, 3 Nov 2015 07:14:39 +0000 (07:14 +0000)]
Revert "[IndVarSimplify] Rewrite loop exit values with their initial values from loop preheader"
Commit 251839 triggers miscompiles on some bots:
http://lab.llvm.org:8011/builders/perf-x86_64-penryn-O3-polly-fast/builds/13723
(The commit is listed in 13722, but due to an existing failure introduced in
13721 and reverted in 13723 the failure is only visible in 13723)
To verify r251839 is indeed the only change that triggered the buildbot failures
and to ensure the buildbots remain green while investigating I temporarily
revert this commit. At the current state it is unclear if this commit introduced
some miscompile or if it only exposed code to Polly that is subsequently
miscompiled by Polly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251901
91177308-0d34-0410-b5e6-
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Matthias Braun [Tue, 3 Nov 2015 02:19:07 +0000 (02:19 +0000)]
Fix build problme introduced in r251883
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251888
91177308-0d34-0410-b5e6-
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Matthias Braun [Tue, 3 Nov 2015 01:53:36 +0000 (01:53 +0000)]
RegisterPressure: Improve assert message
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251885
91177308-0d34-0410-b5e6-
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Matthias Braun [Tue, 3 Nov 2015 01:53:33 +0000 (01:53 +0000)]
RegisterPressure: Slightly nicer pressure diff dumping
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251884
91177308-0d34-0410-b5e6-
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Matthias Braun [Tue, 3 Nov 2015 01:53:29 +0000 (01:53 +0000)]
ScheduleDAGInstrs: Remove IsPostRA flag; NFC
ScheduleDAGInstrs doesn't behave differently before or after register
allocation. It was only used in a method of MachineSchedulerBase which
behaved differently in MachineScheduler/PostMachineScheduler. Change
this to let MachineScheduler/PostMachineScheduler just pass in a
parameter to that function.
The order of the LiveIntervals* and bool RemoveKillFlags paramters have
been switched to make out-of-tree code fail instead of unintentionally
passing a value intended for the IsPostRA flag to the (previously
following and default initialized) RemoveKillFlags.
Differential Revision: http://reviews.llvm.org/D14245
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251883
91177308-0d34-0410-b5e6-
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Rafael Espindola [Tue, 3 Nov 2015 01:32:40 +0000 (01:32 +0000)]
Don't implicitly construct a Archive::child_iterator.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251878
91177308-0d34-0410-b5e6-
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Rafael Espindola [Tue, 3 Nov 2015 01:20:44 +0000 (01:20 +0000)]
This never returns end(), simplify to use Child instead of iterator. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251876
91177308-0d34-0410-b5e6-
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Rui Ueyama [Tue, 3 Nov 2015 01:04:44 +0000 (01:04 +0000)]
llvm-pdbdump: Simplify. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251873
91177308-0d34-0410-b5e6-
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Colin LeMahieu [Tue, 3 Nov 2015 00:21:19 +0000 (00:21 +0000)]
[Hexagon] Fixing mistaken case fallthrough.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251867
91177308-0d34-0410-b5e6-
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Teresa Johnson [Tue, 3 Nov 2015 00:14:15 +0000 (00:14 +0000)]
Restore "Support for ThinLTO function importing and symbol linking."
This restores commit r251837, with the new library dependence added to
llvm-link/Makefile to address bot failures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251866
91177308-0d34-0410-b5e6-
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Kevin Enderby [Mon, 2 Nov 2015 23:42:05 +0000 (23:42 +0000)]
Allow llvm-nm’s single letter command line flags to be grouped.
Which is needed if we want to replace darwin’s nm(1) with llvm-nm
as there are many uses of grouped flags. The added test case is
one specific case that is in real use.
rdar://
23337419
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251864
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Matt Arsenault [Mon, 2 Nov 2015 23:30:48 +0000 (23:30 +0000)]
AMDGPU: Stop assuming vreg for build_vector
This was causing a variety of test failures when v2i64
is added as a legal type.
SIFixSGPRCopies should correctly handle the case of vector inputs
to a scalar reg_sequence, so this isn't necessary anymore. This
was hiding some deficiencies in how reg_sequence is handled later,
but this shouldn't be a problem anymore since the register class
copy of a reg_sequence is now done before the reg_sequence.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251860
91177308-0d34-0410-b5e6-
96231b3b80d8
Derek Schuff [Mon, 2 Nov 2015 23:23:16 +0000 (23:23 +0000)]
[WebAssembly] Make WebAssemblyCodeGen depend on WebAssemblyAsmPrinter
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251859
91177308-0d34-0410-b5e6-
96231b3b80d8
Matt Arsenault [Mon, 2 Nov 2015 23:23:02 +0000 (23:23 +0000)]
AMDGPU: Error on graphics shaders with HSA
I've found myself pointlessly debugging problems from running
graphics tests with an HSA triple a few times, so stop this from
happening again.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251858
91177308-0d34-0410-b5e6-
96231b3b80d8
Sanjay Patel [Mon, 2 Nov 2015 23:22:49 +0000 (23:22 +0000)]
[CGP] widen switch condition and case constants to target's register width (2nd try)
This is a redo of r251849 except the tests have been split into arch-specific folders
to hopefully make the bots happy.
This is a follow-up from the discussion in D12965. The block-at-a-time limitation of
SelectionDAG also came up in D13297.
Without the InstCombine change from D12965, I don't expect this patch to make any
difference in the real world because InstCombine does not shrink cases like this in
visitSwitchInst(). But we need to have this CGP safety harness in place before
proceeding with any shrinkage in D12965, so we won't generate extra extends for compares.
I've opted for IR regression tests in the patch because that seems like a clearer way to
test the transform, but PowerPC CodeGen for an i16 widening test is shown below. x86
will need more work to solve: https://llvm.org/bugs/show_bug.cgi?id=22473
Before:
BB#0:
mr 4, 3
extsh. 3, 4
ble 0, .LBB0_5
BB#1:
cmpwi 3, 99
bgt 0, .LBB0_9
BB#2:
rlwinm 4, 4, 0, 16, 31 <--- 32-bit mask/extend
li 3, 0
cmplwi 4, 1
beqlr 0
BB#3:
cmplwi 4, 10
bne 0, .LBB0_12
BB#4:
li 3, 1
blr
.LBB0_5:
rlwinm 3, 4, 0, 16, 31 <--- 32-bit mask/extend
cmplwi 3, 65436
beq 0, .LBB0_13
BB#6:
cmplwi 3, 65526
beq 0, .LBB0_15
BB#7:
cmplwi 3, 65535
bne 0, .LBB0_12
BB#8:
li 3, 4
blr
.LBB0_9:
rlwinm 3, 4, 0, 16, 31 <--- 32-bit mask/extend
cmplwi 3, 100
beq 0, .LBB0_14
...
After:
BB#0:
rlwinm 4, 3, 0, 16, 31 <--- mask/extend to 32-bit and then use that for comparisons
cmpwi 4, 999
ble 0, .LBB0_5
BB#1:
lis 3, 0
ori 3, 3, 65525
cmpw 4, 3
bgt 0, .LBB0_9
BB#2:
cmplwi 4, 1000
beq 0, .LBB0_14
BB#3:
cmplwi 4, 65436
bne 0, .LBB0_13
BB#4:
li 3, 6
blr
.LBB0_5:
li 3, 0
cmplwi 4, 1
beqlr 0
BB#6:
cmplwi 4, 10
beq 0, .LBB0_12
BB#7:
cmplwi 4, 100
bne 0, .LBB0_13
BB#8:
li 3, 2
blr
.LBB0_9:
cmplwi 4, 65526
beq 0, .LBB0_15
BB#10:
cmplwi 4, 65535
bne 0, .LBB0_13
...
Differential Revision: http://reviews.llvm.org/D13532
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251857
91177308-0d34-0410-b5e6-
96231b3b80d8
Matt Arsenault [Mon, 2 Nov 2015 23:15:46 +0000 (23:15 +0000)]
AMDGPU: Un XFAIL a test
This should probably be merged with one of the other private memory
tests, but it fails on r600.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251856
91177308-0d34-0410-b5e6-
96231b3b80d8
Matt Arsenault [Mon, 2 Nov 2015 23:15:42 +0000 (23:15 +0000)]
AMDGPU: Distribute SGPR->VGPR copies of REG_SEQUENCE
Make the REG_SEQUENCE be a VGPR, and do the register class
copy first.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251855
91177308-0d34-0410-b5e6-
96231b3b80d8
David Blaikie [Mon, 2 Nov 2015 23:10:52 +0000 (23:10 +0000)]
Fix the build I just broke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251854
91177308-0d34-0410-b5e6-
96231b3b80d8
David Blaikie [Mon, 2 Nov 2015 23:09:38 +0000 (23:09 +0000)]
Orc: Drop some else-after-return, reflow a few spots, and avoid use of pointee types
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251853
91177308-0d34-0410-b5e6-
96231b3b80d8
Davide Italiano [Mon, 2 Nov 2015 23:07:14 +0000 (23:07 +0000)]
[SimplifyLibCalls] Remove variables that are not used. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251852
91177308-0d34-0410-b5e6-
96231b3b80d8
Sanjay Patel [Mon, 2 Nov 2015 23:05:20 +0000 (23:05 +0000)]
revert r251849; need to move tests to arch-specific folders
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251851
91177308-0d34-0410-b5e6-
96231b3b80d8
Cong Hou [Mon, 2 Nov 2015 22:53:48 +0000 (22:53 +0000)]
Add a flag vectorizer-maximize-bandwidth in loop vectorizer to enable using larger vectorization factor.
To be able to maximize the bandwidth during vectorization, this patch provides a new flag vectorizer-maximize-bandwidth. When it is turned on, the vectorizer will determine the vectorization factor (VF) using the smallest instead of widest type in the loop. To avoid increasing register pressure too much, estimates of the register usage for different VFs are calculated so that we only choose a VF when its register usage doesn't exceed the number of available registers.
This is the second attempt to submit this patch. The first attempt got a test failure on ARM. This patch is updated to try to fix the failure (more specifically, by handling the case when VF=1).
Differential revision: http://reviews.llvm.org/D8943
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251850
91177308-0d34-0410-b5e6-
96231b3b80d8
Sanjay Patel [Mon, 2 Nov 2015 22:46:24 +0000 (22:46 +0000)]
[CGP] widen switch condition and case constants to target's register width
This is a follow-up from the discussion in D12965. The block-at-a-time limitation of
SelectionDAG also came up in D13297.
Without the InstCombine change from D12965, I don't expect this patch to make any
difference in the real world because InstCombine does not shrink cases like this in
visitSwitchInst(). But we need to have this CGP safety harness in place before
proceeding with any shrinkage in D12965, so we won't generate extra extends for compares.
I've opted for IR regression tests in the patch because that seems like a clearer way to
test the transform, but PowerPC CodeGen for an i16 widening test is shown below. x86
will need more work to solve: https://llvm.org/bugs/show_bug.cgi?id=22473
Before:
BB#0:
mr 4, 3
extsh. 3, 4
ble 0, .LBB0_5
BB#1:
cmpwi 3, 99
bgt 0, .LBB0_9
BB#2:
rlwinm 4, 4, 0, 16, 31 <--- 32-bit mask/extend
li 3, 0
cmplwi 4, 1
beqlr 0
BB#3:
cmplwi 4, 10
bne 0, .LBB0_12
BB#4:
li 3, 1
blr
.LBB0_5:
rlwinm 3, 4, 0, 16, 31 <--- 32-bit mask/extend
cmplwi 3, 65436
beq 0, .LBB0_13
BB#6:
cmplwi 3, 65526
beq 0, .LBB0_15
BB#7:
cmplwi 3, 65535
bne 0, .LBB0_12
BB#8:
li 3, 4
blr
.LBB0_9:
rlwinm 3, 4, 0, 16, 31 <--- 32-bit mask/extend
cmplwi 3, 100
beq 0, .LBB0_14
...
After:
BB#0:
rlwinm 4, 3, 0, 16, 31 <--- mask/extend to 32-bit and then use that for comparisons
cmpwi 4, 999
ble 0, .LBB0_5
BB#1:
lis 3, 0
ori 3, 3, 65525
cmpw 4, 3
bgt 0, .LBB0_9
BB#2:
cmplwi 4, 1000
beq 0, .LBB0_14
BB#3:
cmplwi 4, 65436
bne 0, .LBB0_13
BB#4:
li 3, 6
blr
.LBB0_5:
li 3, 0
cmplwi 4, 1
beqlr 0
BB#6:
cmplwi 4, 10
beq 0, .LBB0_12
BB#7:
cmplwi 4, 100
bne 0, .LBB0_13
BB#8:
li 3, 2
blr
.LBB0_9:
cmplwi 4, 65526
beq 0, .LBB0_15
BB#10:
cmplwi 4, 65535
bne 0, .LBB0_13
...
Differential Revision: http://reviews.llvm.org/D13532
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251849
91177308-0d34-0410-b5e6-
96231b3b80d8
Bill Schmidt [Mon, 2 Nov 2015 22:43:57 +0000 (22:43 +0000)]
[PPC64LE] Properly initialize instr-info in PPCVSXSwapRemoval pass
Replace some hacky code with the proper way to get at this data.
No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251848
91177308-0d34-0410-b5e6-
96231b3b80d8
Sanjay Patel [Mon, 2 Nov 2015 22:34:55 +0000 (22:34 +0000)]
don't repeat function names in comments; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251846
91177308-0d34-0410-b5e6-
96231b3b80d8
Davide Italiano [Mon, 2 Nov 2015 22:33:26 +0000 (22:33 +0000)]
[SimplifyLibCalls] Merge two if statements. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251845
91177308-0d34-0410-b5e6-
96231b3b80d8
Teresa Johnson [Mon, 2 Nov 2015 22:17:32 +0000 (22:17 +0000)]
Revert "Support for ThinLTO function importing and symbol linking."
This reverts commit r251837, due to a number of bot failures of the form:
/home/grosser/buildslave/perf-x86_64-penryn-O3-polly-fast/llvm.obj/tools/llvm-link/Release+Asserts/llvm-link.o:llvm-link.cpp:function
loadIndex(llvm::LLVMContext&, llvm::Module const*): error: undefined
reference to
'llvm::object::FunctionIndexObjectFile::create(llvm::MemoryBufferRef,
llvm::LLVMContext&, llvm::Module const*, bool)'
/home/grosser/buildslave/perf-x86_64-penryn-O3-polly-fast/llvm.obj/tools/llvm-link/Release+Asserts/llvm-link.o:llvm-link.cpp:function
loadIndex(llvm::LLVMContext&, llvm::Module const*): error: undefined
reference to 'llvm::object::FunctionIndexObjectFile::takeIndex()'
I'm not sure why these are happening - I added Object to the requred
libraries in tools/llvm-link/LLVMBuild.txt and the LLVM_LINK_COMPONENTS
in tools/llvm-link/CMakeLists.txt. Confirmed for my build that these
symbols come out of libLLVMObject.a. What am I missing?
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251841
91177308-0d34-0410-b5e6-
96231b3b80d8
Chen Li [Mon, 2 Nov 2015 22:00:15 +0000 (22:00 +0000)]
[IndVarSimplify] Rewrite loop exit values with their initial values from loop preheader
Summary:
This patch adds support to check if a loop has loop invariant conditions which lead to loop exits. If so, we know that if the exit path is taken, it is at the first loop iteration. If there is an induction variable used in that exit path whose value has not been updated, it will keep its initial value passing from loop preheader. We can therefore rewrite the exit value with
its initial value. This will help remove phis created by LCSSA and enable other optimizations like loop unswitch.
Reviewers: sanjoy
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D13974
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251839
91177308-0d34-0410-b5e6-
96231b3b80d8
Teresa Johnson [Mon, 2 Nov 2015 21:39:10 +0000 (21:39 +0000)]
Support for ThinLTO function importing and symbol linking.
Summary:
Support for necessary linkage changes and symbol renaming during
ThinLTO function importing.
Also includes llvm-link support for manually importing functions
and associated llvm-link based tests.
Note that this does not include support for intelligently importing
metadata, which is currently imported duplicate times. That support will
be in the follow-on patch, and currently is ignored by the tests.
Reviewers: dexonsmith, joker.eph, davidxl
Subscribers: tobiasvk, tejohnson, llvm-commits
Differential Revision: http://reviews.llvm.org/D13515
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251837
91177308-0d34-0410-b5e6-
96231b3b80d8
Tim Northover [Mon, 2 Nov 2015 21:26:58 +0000 (21:26 +0000)]
MachO: support tvOS and watchOS version min commands in llvm-objdump
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251834
91177308-0d34-0410-b5e6-
96231b3b80d8
Cong Hou [Mon, 2 Nov 2015 21:24:00 +0000 (21:24 +0000)]
In MachineBlockPlacement, filter cold blocks off the loop chain when profile data is available.
In the current BB placement algorithm, a loop chain always contains all loop blocks. This has a drawback that cold blocks in the loop may be inserted on a hot function path, hence increasing branch cost and also reducing icache locality.
Consider a simple example shown below:
A
|
B⇆C
|
D
When B->C is quite cold, the best BB-layout should be A,B,D,C. But the current implementation produces A,C,B,D.
This patch filters those cold blocks off from the loop chain by comparing the ratio:
LoopBBFreq / LoopFreq
to 20%: if it is less than 20%, we don't include this BB to the loop chain. Here LoopFreq is the frequency of the loop when we reduce the loop into a single node. In general we have more cold blocks when the loop has few iterations. And vice versa.
Differential revision: http://reviews.llvm.org/D11662
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251833
91177308-0d34-0410-b5e6-
96231b3b80d8
Reid Kleckner [Mon, 2 Nov 2015 20:49:29 +0000 (20:49 +0000)]
[Support] Assert that reported key+data lenghts match reality
This found a bug in Clang's PTH implementation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251829
91177308-0d34-0410-b5e6-
96231b3b80d8
Teresa Johnson [Mon, 2 Nov 2015 20:43:33 +0000 (20:43 +0000)]
Fix use-after-free in function index merging code.
This was flagged by ASAN when using a test case I will be committing
along with D13515.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251827
91177308-0d34-0410-b5e6-
96231b3b80d8
David Blaikie [Mon, 2 Nov 2015 20:05:54 +0000 (20:05 +0000)]
Revert parts accidentally included in r251823
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251826
91177308-0d34-0410-b5e6-
96231b3b80d8
David Blaikie [Mon, 2 Nov 2015 20:01:13 +0000 (20:01 +0000)]
StringRef-ify DiagnosticInfoSampleProfile::Filename
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251823
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Mon, 2 Nov 2015 19:13:59 +0000 (19:13 +0000)]
ELF can handle some relocations of the form -sym + constant.
Remove code that was assuming that this would never work.
Thanks to Colin LeMahie for finding and diagnosing the bug.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251818
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Mon, 2 Nov 2015 19:03:18 +0000 (19:03 +0000)]
Convert tabs to spaces.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251817
91177308-0d34-0410-b5e6-
96231b3b80d8
James Y Knight [Mon, 2 Nov 2015 18:48:08 +0000 (18:48 +0000)]
Fix two issues in MergeConsecutiveStores:
1) PR25154. This is basically a repeat of PR18102, which was fixed in
r200201, and broken again by r234430. The latter changed which of the
store nodes was merged into from the first to the last. Thus, we now
also need to prefer merging a later store at a given address into the
target node, instead of an earlier one.
2) While investigating that, I also realized I'd introduced a bug in
r236850. There, I removed a check for alignment -- not realizing that
nothing except the alignment check was ensuring that none of the stores
were overlapping! This is a really bogus way to ensure there's no
aliased stores.
A better solution to both of these issues is likely to always use the
code added in the 'if (UseAA)' branches which rearrange the chain based
on a more principled analysis. I'll look into whether that can be used
always, but in the interest of getting things back to working, I think a
minimal change makes sense.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251816
91177308-0d34-0410-b5e6-
96231b3b80d8
Tim Northover [Mon, 2 Nov 2015 18:33:35 +0000 (18:33 +0000)]
MachO: improve load command tests slightly
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251815
91177308-0d34-0410-b5e6-
96231b3b80d8
Tim Northover [Mon, 2 Nov 2015 18:21:07 +0000 (18:21 +0000)]
WatchOS: update default CPU for triple after t2dsp -> dsp rename
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251814
91177308-0d34-0410-b5e6-
96231b3b80d8
Teresa Johnson [Mon, 2 Nov 2015 18:02:11 +0000 (18:02 +0000)]
Clang format a few prior patches (NFC)
I had clang formatted my earlier patches using the wrong style.
Reformatted with the LLVM style.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251812
91177308-0d34-0410-b5e6-
96231b3b80d8
Tim Northover [Mon, 2 Nov 2015 18:00:00 +0000 (18:00 +0000)]
TvOS: add missing support for some libcalls.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251811
91177308-0d34-0410-b5e6-
96231b3b80d8
Artur Pilipenko [Mon, 2 Nov 2015 17:53:51 +0000 (17:53 +0000)]
Preserve load alignment and dereferenceable metadata during some transformations
Reviewed By: hfinkel
Differential Revision: http://reviews.llvm.org/D13953
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251809
91177308-0d34-0410-b5e6-
96231b3b80d8
Matthias Braun [Mon, 2 Nov 2015 16:13:46 +0000 (16:13 +0000)]
lit: Add '-a' option to display commands+output of all tests
The existing -v option only displays commands and outputs for failed
tests, the newly introduced -a displays it for all executed tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251806
91177308-0d34-0410-b5e6-
96231b3b80d8
Silviu Baranga [Mon, 2 Nov 2015 15:29:49 +0000 (15:29 +0000)]
Add missing override statements in ScalarEvolution.h. NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251805
91177308-0d34-0410-b5e6-
96231b3b80d8
Pawel Bylica [Mon, 2 Nov 2015 14:57:24 +0000 (14:57 +0000)]
Use static instead of anonymous namespace for helper functions. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251801
91177308-0d34-0410-b5e6-
96231b3b80d8
Silviu Baranga [Mon, 2 Nov 2015 14:41:02 +0000 (14:41 +0000)]
[SCEV][LV] Add SCEV Predicates and use them to re-implement stride versioning
Summary:
SCEV Predicates represent conditions that typically cannot be derived from
static analysis, but can be used to reduce SCEV expressions to forms which are
usable for different optimizers.
ScalarEvolution now has the rewriteUsingPredicate method which can simplify a
SCEV expression using a SCEVPredicateSet. The normal workflow of a pass using
SCEVPredicates would be to hold a SCEVPredicateSet and every time assumptions
need to be made a new SCEV Predicate would be created and added to the set.
Each time after calling getSCEV, the user will call the rewriteUsingPredicate
method.
We add two types of predicates
SCEVPredicateSet - implements a set of predicates
SCEVEqualPredicate - tests for equality between two SCEV expressions
We use the SCEVEqualPredicate to re-implement stride versioning. Every time we
version a stride, we will add a SCEVEqualPredicate to the context.
Instead of adding specific stride checks, LoopVectorize now adds a more
generic SCEV check.
We only need to add support for this in the LoopVectorizer since this is the
only pass that will do stride versioning.
Reviewers: mzolotukhin, anemet, hfinkel, sanjoy
Subscribers: sanjoy, hfinkel, rengolin, jmolloy, llvm-commits
Differential Revision: http://reviews.llvm.org/D13595
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251800
91177308-0d34-0410-b5e6-
96231b3b80d8
Nemanja Ivanovic [Mon, 2 Nov 2015 14:01:11 +0000 (14:01 +0000)]
Fix for bootstrap bug introduced in r244921
This revision has introduced an issue that only affects bootstrapped compiler
when it is printing the ASM. It turns out that the new code path taken due to
legalizing a scalar_to_vector of i64 -> v2i64 exposes a missing check in a
micro optimization to change a load followed by a scalar_to_vector into a
load and splat instruction on PPC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251798
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Mon, 2 Nov 2015 13:30:46 +0000 (13:30 +0000)]
This doesn't need a object::Archive::child_iterator.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251796
91177308-0d34-0410-b5e6-
96231b3b80d8
Rafael Espindola [Mon, 2 Nov 2015 13:17:11 +0000 (13:17 +0000)]
Avoid implicitly constructing a Archive::child_iterator.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251794
91177308-0d34-0410-b5e6-
96231b3b80d8
James Molloy [Mon, 2 Nov 2015 09:54:00 +0000 (09:54 +0000)]
[PatternMatch] Switch to use ValueTracking::matchSelectPattern
Instead of rolling our own min/max matching code (which is notoriously
hard to get completely right), use ValueTracking's instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251785
91177308-0d34-0410-b5e6-
96231b3b80d8
Pawel Bylica [Mon, 2 Nov 2015 09:49:17 +0000 (09:49 +0000)]
[Support] Extend sys::path with user_cache_directory function.
Summary:
The new function sys::path::user_cache_directory tries to discover
a directory suitable for cache storage for current system user.
On Windows and Darwin it returns a path to system-specific user cache directory.
On Linux it follows XDG Base Directory Specification, what is:
- use non-empty $XDG_CACHE_HOME env var,
- use $HOME/.cache.
Reviewers: chapuni, aaron.ballman, rafael
Subscribers: rafael, aaron.ballman, llvm-commits
Differential Revision: http://reviews.llvm.org/D13801
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251784
91177308-0d34-0410-b5e6-
96231b3b80d8
Igor Breger [Mon, 2 Nov 2015 07:39:36 +0000 (07:39 +0000)]
AVX512: Implemented encoding and intrinsics for VBROADCASTI32x2 and VBROADCASTF32x2 instructions.
Differential Revision: http://reviews.llvm.org/D14216
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251781
91177308-0d34-0410-b5e6-
96231b3b80d8
Craig Topper [Mon, 2 Nov 2015 07:24:40 +0000 (07:24 +0000)]
[X86] Remove assertions that check for valid scale values on scatter/gather intrinsics. Nothing upstream prevented illegal values from getting here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251780
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Craig Topper [Mon, 2 Nov 2015 07:24:37 +0000 (07:24 +0000)]
[X86] Don't pass a scale value of 0 to scatter/gather intrinsics. This causes the code emitter to throw an assertion if we try to encode it. Need to add a check to fail isel for this, but for now avoid testing it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251779
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96231b3b80d8
Craig Topper [Mon, 2 Nov 2015 07:24:34 +0000 (07:24 +0000)]
[X86] Fold 'if' followed by just an llvm_unreachable into an assert.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251778
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96231b3b80d8
Craig Topper [Mon, 2 Nov 2015 07:24:32 +0000 (07:24 +0000)]
[X86] Use isa instead of dyn_cast in a bool context. NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251777
91177308-0d34-0410-b5e6-
96231b3b80d8