Commit Graph

365 Commits

Author SHA1 Message Date
John McCall e6be5e1c0d Remove the "conditional save" hashtables from IR generation.
llvm-svn: 125761
2011-02-17 19:02:56 +00:00
John McCall c07a0c7e48 Change the representation of GNU ?: expressions to use a different expression
class and to bind the shared value using OpaqueValueExpr.  This fixes an
unnoticed problem with deserialization of these expressions where the
deserialized form would lose the vital pointer-equality trait;  or rather,
it fixes it because this patch also does the right thing for deserializing
OVEs.

Change OVEs to not be a "temporary object" in the sense that copy elision is
permitted.

This new representation is not totally unawkward to work with, but I think
that's really part and parcel with the semantics we're modelling here.  In
particular, it's much easier to fix things like the copy elision bug and to
make the CFG look right.

I've tried to update the analyzer to deal with this in at least some          
obvious cases, and I think we get a much better CFG out, but the printing
of OpaqueValueExprs probably needs some work.

llvm-svn: 125744
2011-02-17 10:25:35 +00:00
John McCall 1bf5846abf Save a copy expression for non-trivial copy constructions of catch variables.
llvm-svn: 125661
2011-02-16 08:02:54 +00:00
John McCall e3dc1707b5 Assorted cleanup:
- Have CGM precompute a number of commonly-used types
  - Have CGF copy that during initialization instead of recomputing them
  - Use TBAA info when initializing a parameter variable
  - Refactor the scalar ++/-- code

llvm-svn: 125562
2011-02-15 09:22:45 +00:00
Chris Lattner 91c08ad14a update for ConstantVector API change.
llvm-svn: 125538
2011-02-15 00:14:06 +00:00
Chris Lattner dd68bd0a65 revert my ConstantVector patch, it seems to have made the llvm-gcc
builders unhappy.

llvm-svn: 125505
2011-02-14 18:16:09 +00:00
Chris Lattner 2d9a7672db update for ConstantVector::get API change.
llvm-svn: 125488
2011-02-14 07:55:40 +00:00
John McCall 351762cda2 A few more tweaks to the blocks AST representation:
- BlockDeclRefExprs always store VarDecls
  - BDREs no longer store copy expressions
  - BlockDecls now store a list of captured variables, information about
    how they're captured, and a copy expression if necessary
    
With that in hand, change IR generation to use the captures data in       
blocks instead of walking the block independently.        

Additionally, optimize block layout by emitting fields in descending
alignment order, with a heuristic for filling in words when alignment
of the end of the block header is insufficient for the most aligned
field.

llvm-svn: 125005
2011-02-07 10:33:21 +00:00
Anton Yartsev 85129b8a86 pre/post ++/-- for AltiVec vectors. (with builtins-ppc-altivec.c failure fixed)
llvm-svn: 125000
2011-02-07 02:17:30 +00:00
John McCall f3a8860ee1 More capturing of 'this': implicit member expressions. Getting that
right for anonymous struct/union members led to me discovering some
seemingly broken code in that area of Sema, which I fixed, partly by  
changing the representation of member pointer constants so that    
IndirectFieldDecls aren't expanded.  This led to assorted cleanups with   
member pointers in CodeGen, and while I was doing that I saw some random
other things to clean up.                   

llvm-svn: 124785
2011-02-03 08:15:49 +00:00
John McCall ce1de6172c Better framework for conditional cleanups; untested as yet.
I'm separately committing this because it incidentally changes some
block orderings and minor IR issues, like using a phi instead of
an unnecessary alloca.

llvm-svn: 124277
2011-01-26 04:00:11 +00:00
Eric Christopher 23ec82fa47 Revert r124146 for now. It appears to be failing on a few platforms.
llvm-svn: 124153
2011-01-24 23:07:03 +00:00
Anton Yartsev 3bad9afaba pre/post increase/decrease for AltiVec vectors
llvm-svn: 124146
2011-01-24 20:55:22 +00:00
Douglas Gregor 9c399a29fd Send code generation for xvalues down the same path as lvalues
llvm-svn: 124023
2011-01-22 02:44:21 +00:00
John McCall 424cec97bd Change QualType::getTypePtr() to return a const pointer, then change a
thousand other things which were (generally inadvertantly) relying on that.

llvm-svn: 123814
2011-01-19 06:33:43 +00:00
Ken Dyck 705ba07ef0 Replace calls to getTypeSize() and getTypeAlign() with their 'InChars'
counterparts where char units are needed.

llvm-svn: 123805
2011-01-19 01:58:38 +00:00
John McCall 294c2db42b Ensure an insertion point at the end of a statement-expression.
Fixes PR8967.

llvm-svn: 123360
2011-01-13 02:03:06 +00:00
Douglas Gregor be7b54889f Add IR generation support for SizeOfPackExpr.
llvm-svn: 123332
2011-01-12 22:11:34 +00:00
Francois Pichet 34b2113250 Remove the TypesCompatibleExprClass AST node. Merge its functionality into BinaryTypeTraitExpr.
llvm-svn: 121298
2010-12-08 22:35:30 +00:00
Francois Pichet 9dfa3ce94f Type traits intrinsic implementation: __is_base_of(T, U)
New AST node introduced: BinaryTypeTraitExpr; to be reused for more intrinsics.

llvm-svn: 121074
2010-12-07 00:08:36 +00:00
John McCall 5d41378146 Rename CXXExprWithTemporaries -> ExprWithCleanups; there's no theoretical
reason this is limited to C++, and it's certainly not limited to temporaries.

llvm-svn: 120996
2010-12-06 08:20:24 +00:00
John McCall a2342eb857 Fix a bug in the emission of __real/__imag l-values on scalar operands.
Fix a bug in the emission of complex compound assignment l-values.
Introduce a method to emit an expression whose value isn't relevant.
Make that method evaluate its operand as an l-value if it is one.
Fixes our volatile compliance in C++.

llvm-svn: 120931
2010-12-05 02:00:02 +00:00
John McCall 594827281c Silly special case: never load when dereferencing void*.
llvm-svn: 120905
2010-12-04 12:43:24 +00:00
John McCall 34376a68c4 Although we currently have explicit lvalue-to-rvalue conversions, they're
not actually frequently used, because ImpCastExprToType only creates a node
if the types differ.  So explicitly create an ICE in the lvalue-to-rvalue
conversion code in DefaultFunctionArrayLvalueConversion() as well as several
other new places, and consistently deal with the consequences throughout the
compiler.

In addition, introduce a new cast kind for loading an ObjCProperty l-value,
and make sure we emit those nodes whenever an ObjCProperty l-value appears
that's not on the LHS of an assignment operator.

This breaks a couple of rewriter tests, which I've x-failed until future
development occurs on the rewriter.

Ted Kremenek kindly contributed the analyzer workarounds in this patch.

llvm-svn: 120890
2010-12-04 03:47:34 +00:00
John McCall f3eb96fccf Kill the KVC l-value kind and calculate the base expression when emitting
the l-value.

llvm-svn: 120884
2010-12-04 02:32:38 +00:00
John McCall b7bd14fa08 Simplify the ASTs by consolidating ObjCImplicitGetterSetterExpr and ObjCPropertyRefExpr
into the latter.

llvm-svn: 120643
2010-12-02 01:19:52 +00:00
John McCall f3735e01ce Restore the lvalue-to-rvalue conversion patch with a minimal fix.
llvm-svn: 120555
2010-12-01 04:43:34 +00:00
John McCall 4f22c9de48 L-value to r-value conversion is not ready for prime-time.
llvm-svn: 120433
2010-11-30 17:58:55 +00:00
John McCall 824fd1dcff Introduce an r-value to l-value cast kind. I'm not promising anything
about the reliability of this yet.

llvm-svn: 120422
2010-11-30 10:13:06 +00:00
John McCall 086a464e24 Switch a lot of call-sites over to using the new value-kind calculations.
llvm-svn: 120084
2010-11-24 05:12:34 +00:00
Anton Yartsev 3f8f2886c1 comparison of AltiVec vectors now gives bool result (fix for 7533)
llvm-svn: 119678
2010-11-18 03:19:30 +00:00
John McCall 07bb19667a Simplify some complex emission and implement correct semantics for
assignment to volatiles in C.  This in effect reverts some of mjs's
work in and around r72572.  Basically, the C++ standard is quite
clear, except that it lies about volatile behavior approximating
C's, whereas the C standard is almost actively misleading.

llvm-svn: 119344
2010-11-16 10:08:07 +00:00
John McCall 3eba6e67ec Now that we have reliable cast kinds, simplify scalar cast IR gen.
llvm-svn: 119332
2010-11-16 06:21:14 +00:00
John McCall d50a27111c Kill CK_Unknown and flesh out the documentation for the existing CastKinds.
llvm-svn: 119331
2010-11-16 05:46:29 +00:00
John McCall 8cb679e4e1 Assorted work leading towards the elimination of CK_Unknown.
llvm-svn: 119138
2010-11-15 09:13:47 +00:00
John McCall d764625448 Add a few more complex-related cast kinds that arise due to arbitrary
implicit conversions;  the last batch was specific to promotions.
I think this is the full set we need.  I do think dividing the cast
kinds into floating and integral is probably a good idea.

Annotate a *lot* more C casts with useful cast kinds.

llvm-svn: 119036
2010-11-14 08:17:51 +00:00
John McCall c5e62b47af Introduce five new cast kinds for various conversions into and
between complex types.

llvm-svn: 118994
2010-11-13 09:02:35 +00:00
John McCall e84af4e486 Introduce a null-to-pointer implicit cast kind.
llvm-svn: 118966
2010-11-13 01:35:44 +00:00
Anders Carlsson fd88a6160d Rename getBaseClassOffset to getBaseClassOffsetInBits and introduce a getBaseClassOffset which returns the offset in CharUnits. Do the same thing for getVBaseClassOffset.
llvm-svn: 117881
2010-10-31 23:22:37 +00:00
Benjamin Kramer fb5e584151 More class anonymization.
llvm-svn: 117106
2010-10-22 16:48:22 +00:00
John McCall a2fabff4f6 Permit constant evaluation of const floating-point variables with
constant initializers.

llvm-svn: 116138
2010-10-09 01:34:31 +00:00
Devang Patel 3db5480b27 Tighter check in r116060 blcoked enums also. Emit enum const's debug info.
llvm-svn: 116071
2010-10-08 18:24:19 +00:00
Devang Patel 5e8ee2bb89 Do not repeat debug info for file variable constants.
This is tested by file-statics.exp in gdb testsuite.

llvm-svn: 116060
2010-10-08 17:02:40 +00:00
Devang Patel 3703ff4163 dyn_cast is more appropriate here.
llvm-svn: 115569
2010-10-04 22:28:23 +00:00
Devang Patel 95eea45aa5 Add missing '}' :)
llvm-svn: 115568
2010-10-04 22:13:18 +00:00
Devang Patel 44b8bf0f5b Emit debug info for an aggregate while processing MemberExpr if the aggregate's debug info was delayed untill now.
llvm-svn: 115564
2010-10-04 21:46:04 +00:00
Fariborz Jahanian 8fb87aec78 Patch implements passing arrays to functions expecting
vla. Implements pr7827.

llvm-svn: 114737
2010-09-24 17:30:16 +00:00
Fariborz Jahanian 521c72c756 Fixes an IRgen ICE due to cast of null pointer to
a vla type (fixes pr7827).

llvm-svn: 114495
2010-09-21 22:53:33 +00:00
Nate Begeman abb5a7370d Check in support for OpenCL conditional operator on vector types.
llvm-svn: 114371
2010-09-20 22:41:17 +00:00
David Chisnall dd84ef1e62 Add a -ftrapv-handler= option which allows a handler to invoke instead of simply aborting when a signed operation overflows. This mirrors the (GCC-incompatible) behaviour from clang 1.0 and 1.1 when -ftrapv was specified, but allows the handler to be defined for each compilation unit.
llvm-svn: 114192
2010-09-17 18:29:54 +00:00