into a sbc with a positive number, the immediate should be complemented, not
negated. Also added a missing pattern for ARM codegen.
rdar://12559385
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When the trip count is -1, getSmallConstantTripMultiple could return zero,
and this would cause runtime loop unrolling to assert. Instead of returning
zero, one is now returned (consistent with the existing overflow cases).
Fixes PR14167.
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a bunch of errors for all the Operator subclasses such as:
include/llvm/Operator.h:76:7: error: deleted function 'virtual llvm::OverflowingBinaryOperator::~OverflowingBinaryOperator()'
include/llvm/Operator.h:43:3: error: overriding non-deleted function 'virtual llvm::Operator::~Operator()'
include/llvm/Operator.h:76:7: error: 'virtual llvm::OverflowingBinaryOperator::~OverflowingBinaryOperator()' is implicitly deleted because the default definition would be ill-formed:
include/llvm/Operator.h:43:3: error: 'virtual llvm::Operator::~Operator()' is private
include/llvm/Operator.h:76:7: error: within this context
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see the offsetof operator. Previously, we were matching something like MOVrm
in the front-end and later matching MOVrr in the back-end. This change makes
things more consistent. It also fixes cases where we can't match against a
memory operand as the source (test cases coming).
Part of rdar://12470317
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- If more than 1 elemennts are defined and target supports the vectorized
conversion, use the vectorized one instead to reduce the strength on
conversion operation.
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- As there's no 64-bit GPRs in 32-bit mode, a custom conversion from v2u32 to
v2f32 is added to improve the efficiency of the code generated.
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the difference from "int x" (which should go in registers and
"struct y {int x;}" (which should not).
Clang will be updated in the next patches.
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called. Provide an (asserting) definition of Operator's private destructor.
Remove destructors from all classes derived from Operator. We don't need them
for safety, because their implicit definitions would be ill-formed (they'd call
Operator's private destructor), and we don't need them to avoid emitting
vtables, because we don't do anything with Operator subclasses which would
trigger vtable instantiation.
The Operator hierarchy is still a complete disaster with regard to undefined
behavior, but this at least allows LLVM to link when using Clang's
-fcatch-undefined-behavior with a new vptr-based type checking mechanism.
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non-zero value as we don't know the actual value at this point. This is
necessary to get the matching correct in some cases. However, the actual value
set as the base register doesn't matter, since we're just matching not emitting.
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and easier to read by adding a couple helper functions. Suggestion by
Chandler Carruth and seconded by Meador Inge!
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- Check index being extracted to be constant 0 before simplfiying.
Otherwise, retain the original sequence.
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loads. It's not really profitable and may result in GVN going into an infinite
loop when it hits constructs like this:
%x = gep %some.type %x, ...
Found via an LTO build of LLVM.
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- Replace v4i8/v8i8 -> v8f32 DAG combine with custom lowering to reduce
DAG combine overhead.
- Extend the support to v4i16/v8i16 as well.
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for the PowerPC target, and factoring the results. This will ease future
maintenance of both subtargets.
PPCTargetLowering::LowerCall_Darwin_Or_64SVR4() has grown a lot of special-case
code for the different ABIs, making maintenance difficult. This is getting
worse as we repair errors in the 64-bit ELF ABI implementation, while avoiding
changes to the Darwin ABI logic. This patch splits the routine into
LowerCall_Darwin() and LowerCall_64SVR4(), allowing both versions to be
significantly simplified. I've factored out chunks of similar code where it
made sense to do so. I also performed similar factoring on
LowerFormalArguments_Darwin() and LowerFormalArguments_64SVR4().
There are no functional changes in this patch, and therefore no new test
cases have been developed.
Built and tested on powerpc64-unknown-linux-gnu with no new regressions.
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