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path: root/lib/CodeGen/CGStmt.cpp
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2008-11-22Use Expr::Evaluate for case statements. Fixes PR2525Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59881 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-15Start implementing support for @synchonized with the darwin ObjC API.Chris Lattner
Patch by Fariborz! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59377 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13Supply finished flag to EmitBlock for common statements which useDaniel Dunbar
landing pads. - Primarily a cleanliness issue instead of a performance issue (this eliminates all blocks w/o predecessors on 176.gcc/expr.c), but this also allows subsequent code to recognize it is unreachable and potentially avoid IRgen. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59211 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13Normalize many BasicBlock names.Daniel Dunbar
- Use dotted notation for blocks related to a particular statement type. - Use .end for landing pads. No functionality change in NDEBUG mode. :) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59210 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13Add IsFinished arg to EmitBlock.Daniel Dunbar
- Indicates that caller is done with the block and it can be dropped if it has no predecessors. Useful for callers who need to make landing pads but which may not be reached. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59207 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13For if blocks with no else, name the join block ifend instead of theDaniel Dunbar
more confusing ifelse. Use dotted names for if blocks (if.then vs ifthen). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59201 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12IRgen improvements on unreachable code:Daniel Dunbar
- Split out "simple" statements which can easily handle IR generation when there is no insert point. These are generally statements which start by emitting a new block or are only containers for other statements. - This fixes a regression in emitting dummy blocks, notably for case statements. - This also fixes spurious emission of a number of debug stoppoint intrinsic instructions. Remove unneeded sw.body block, just clear the insertion point. Lift out CodeGenFunction::EmitStopPoint which calls into the CGDebugInfo class when generating debug info. Normalize definitions of Emit{Break,Continue}Stmt and usage of ErrorUnsupported. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59118 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12Move EmitBranchOnBoolExpr and ConstantFoldsToSimpleInteger toChris Lattner
CodeGenFunction.cpp. Change VisitConditionalOperator to use constant fold instead of codegen'ing a constant conditional. Change ForStmt to use EmitBranchOnBoolExpr, this shrinks expr.c very slightly to 40239 lines. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59113 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12Make emission of 'if' conditions much more sophisticated when weChris Lattner
have a condition that is an &&/||. Before we used to compile things like this: int test() { if (x && y) foo(); else bar(); } into: %0 = load i32* @x ; <i32> [#uses=1] %1 = icmp ne i32 %0, 0 ; <i1> [#uses=1] br i1 %1, label %land_rhs, label %land_cont land_rhs: ; preds = %entry %2 = load i32* @y ; <i32> [#uses=1] %3 = icmp ne i32 %2, 0 ; <i1> [#uses=1] br label %land_cont land_cont: ; preds = %land_rhs, %entry %4 = phi i1 [ false, %entry ], [ %3, %land_rhs ] ; <i1> [#uses=1] br i1 %4, label %ifthen, label %ifelse ifthen: ; preds = %land_cont %call = call i32 (...)* @foo() ; <i32> [#uses=0] br label %ifend ifelse: ; preds = %land_cont %call1 = call i32 (...)* @bar() ; <i32> [#uses=0] br label %ifend ifend: ; preds = %ifelse, %ifthen Now we turn it into the much more svelte code: %0 = load i32* @x ; <i32> [#uses=1] %1 = icmp ne i32 %0, 0 ; <i1> [#uses=1] br i1 %1, label %land_lhs_true, label %ifelse land_lhs_true: ; preds = %entry %2 = load i32* @y ; <i32> [#uses=1] %3 = icmp ne i32 %2, 0 ; <i1> [#uses=1] br i1 %3, label %ifthen, label %ifelse ifthen: ; preds = %land_lhs_true %call = call i32 (...)* @foo() ; <i32> [#uses=0] br label %ifend ifelse: ; preds = %land_lhs_true, %entry %call1 = call i32 (...)* @bar() ; <i32> [#uses=0] br label %ifend ifend: ; preds = %ifelse, %ifthen Note the lack of a phi node. This shrinks the -O0 .ll file for 176.gcc/expr.c from 43176 to 40267 lines. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59111 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12Clean up some code to use isZero instead of calling getZExtValue.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59103 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11Rework IRgen invariant w.r.t. current insert point.Daniel Dunbar
- EmitStmt is no longer required to finish with a current insertion point defined (i.e. it does not need to make dummy blocks). Instead, it can clear the insertion point in the builder which indicates that the current insertion point is unreachable. - CodeGenFunction provides HaveInsertPoint and EnsureInsertPoint which respectively test if there is an insert point and ensure an insertion point exists (by making a dummy block). - Clearly mark functions in CodeGenFunction which can be called with no insertion point defined. Currently this is a limited set, and EmitStmt simply EnsureInsertPoint()s before emitting subsequent IR. Remove EmitDummyBlock, which is no longer needed. Clients who haven't already cleared the insertion point (typically via EmitBranch) can do so by hand. Remove isDummyBlock, which has effectively been renamed to HaveInsertPoint. The main thrust of this change is that we no longer have create dummy blocks just to destroy them a short time later in EmitBlock in the common case that there is no unreachable code following something like a goto. Additionally, this means that we are not using the hokey condition in isDummyBlock that a block without a name is a dummy block. Guess how well that works when we never emit block names! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59089 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11Change EmitBranch to always clear the insert point to clarify irgenDaniel Dunbar
invariants. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59085 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11Add CodeGenFunction::EmitBranch.Daniel Dunbar
- Emits an unconditional branch, with extra logic to avoid generating spurious branches out of dummy blocks. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59037 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11short circuit && and || when possible. This substantially reducesChris Lattner
the size of the -O0 output on some cases. For example, on expr.c from 176.gcc, it shrinks the .ll file from 43164 to 42835 lines, and removed references to two external symbols. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59034 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11Make codegen smart enough to not emit the dead side of an if whoseChris Lattner
condition is a constant. This shrinks -O0 codegen by quite a bit on some cases. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59033 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11Add CodeGenFunction::EmitDummyBlock for marking places where we makeDaniel Dunbar
"dummy" blocks (blocks just used to make sure we have a place to dump code to). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59022 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11Remove CodeGenFunction::StartBlock.Daniel Dunbar
- Was confusing and only used in one small part of the code. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59020 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11Centralize basic block creation in CodeGenFunction::createBasicBlock.Daniel Dunbar
- No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59017 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-09Support named operands in inline asm statements.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58940 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17Emit error unsupported when asm string conversion fails instead ofDaniel Dunbar
assert. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57721 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17Change CGDebugInfo::setLocation to just ignore invalid locations. ThisDaniel Dunbar
simplifies clients. Also, add assert that RegionStack is empty when the CGDebugInfo is destroyed. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57684 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-12silence release-assert warnings.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57392 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-06In EmitDeclStmt: use DeclStmt::const_decl_iterator instead of walking the ↵Ted Kremenek
scoped decl chain. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57192 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-02Emit error unsupported for break/continue/goto inside Obj-C exceptionDaniel Dunbar
handling blocks. - This has false positives, but at least prevents miscompiles. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56958 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-30Add infrastructure for proper @finally support.Daniel Dunbar
- Provides a basic primitive to jump to an arbitrary basic block, through the finally code. - Only used for return statements and rethrow currently. Still need to handle break, continue and goto. - Code still needs to be shuffled around to live elsewhere. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56827 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-28Skip redundant if.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56762 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-24Refactor some CodeGen functionality: Daniel Dunbar
- Add CodeGenFunction::{EmitReturnOfRValue, EmitIvarOffset} - Factor EmitLValueForIvar out of EmitObjCIvarRefLValue. No non-error functionality change (some unsupported errors are degraded to asserts for the time being). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56543 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-11Make sure to store the exception in the catch parameter.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56102 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-11Make sure to emit the catch parameter as well as the catch body.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56101 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-09Use a unified return block.Daniel Dunbar
- For the time being this means our emitted code is somewhat worse, especially for aggregates. This will be fixed. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56013 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-09Move handling of @try and @throw to the runtime class.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55983 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-30Stub out CodeGenFunction::EmitObjCForCollectionStmt.Anders Carlsson
Add CodeGenFunction::EmitMemSetToZero and make AggExprEmitter::EmitAggregateClear use it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55573 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-29Downgrade a number of FIXME asserts to ErrorUnsupported.Daniel Dunbar
- Notably VLAs git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55544 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-23Implement Obj-C ivar references to aggregates.Daniel Dunbar
Implement Obj-C lvalue message sends (aggregate returns). Update several places to emit more precise ErrorUnsupported warnings for currently unimplemented Obj-C features (main missing chunks are property references, Obj-C exception handling, and the for ... in syntax). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55234 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-16Change WarnUnsupported to ErrorUnsupported (in name and in practice).Daniel Dunbar
- We are beyond the point where this shows up often and when it does generating miscompiled files is bad. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54836 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-11More #include cleaningDaniel Dunbar
- Kill unnecessary #includes in .cpp files. This is an automatic sweep so some things removed are actually used, but happen to be included by a previous header. I tried to get rid of the obvious examples and this was the easiest way to trim the #includes in one fell swoop. - We now return to regularly scheduled development. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54632 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-11More #include cleaningDaniel Dunbar
- Remove internal uses of AST.h git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54628 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-04Add CodeGen support for indirect goto.Daniel Dunbar
- Follows emission scheme used by llvm-gcc, i.e. invent an id for each label whose address is taken and replace each indirect goto by a switch to each possible target. - Currently we emit a switch for each indirect goto instead of merging them as llvm-gcc does. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54318 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-26implement codegen support for labels at the end of stmtexprs.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54100 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-26minor tidying, no functionality change.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54099 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-25Rework codegen of case rangesDaniel Dunbar
- Fix multiple issues with the way case ranges were emitted, see test cases details about the specific issues. - The root issue was not being careful about how basic blocks were emitted which led to them being chained together incorrectly, resulting in improper control flow. - Fixes <rdar://problem/6098585> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54006 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-24Fix EmitCaseStmtRange to ignore empty rangesDaniel Dunbar
- Also cleaned up emission slightly - Inspection of the code revealed several other bugs, however. Case ranges are not properly wired and can result in switch cases being dropped or even infinite loops. See: <rdar://problem/6098585> Completes: <rdar://problem/6094119> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@53975 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-13Basic support for volatile loads and stores. Stores the volatile Eli Friedman
qualifier in the lvalue, and changes lvalue loads/stores to honor the volatile flag. Places which need some further attention are marked with FIXMEs. Patch by Cédric Venet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@52264 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-25Generate subprogram debug info with -g.Sanjiv Gupta
Also take care of freeing memory at the right places. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@51553 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-22Change uses of llvm::Type::isFirstClassType to use the newDan Gohman
llvm::Type::isSingleValueType. Currently these two functions have the same behavior, but soon isFirstClassType will return true for struct and array types. Clang may some day want to use of isFirstClassType for some of these some day as an optimization, but it'll require some consideration. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@51446 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-22Make debugging information usable. This is barebones, but it makes -g Eli Friedman
actually work (instead of crashing llc), and there's enough info emitted to get line number information in gdb. This should hopefully be helpful for debugging non-working programs. I got rid of the begin/endregion calls because the implementation wasn't working; someone who knows the debugging info a bit better might try to add it. I really have no clue how a compiler is supposed to emit them. This commit shouldn't have any effect without -g. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@51404 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-22Minor refactoring: compute the return value separately from emitting the Eli Friedman
ret. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@51403 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-12Emit basic block for switch body; fixes PR2307.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50968 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-08Added -g command line options to clang for generating source level debug ↵Sanjiv Gupta
information. This patch currently enables generation of line number debug information (stoppoints) and region begin/end debug information. The new files CGDebugInfo.h and CGDebugInfo.cpp implements the debug info manager class CGDebugInfo. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50848 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-06tracking API changes arising from r49277Gabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49279 91177308-0d34-0410-b5e6-96231b3b80d8
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