code that uses the solver to reflect the new location.
Created "FlowSensitive" subdirectory in include/clang/Analysis to hold
header files relating to flow-sensitive analyses. Moved
"DataflowValues.h" into this subdirectory.
llvm-svn: 42320
"CheckDiagnostics" (used for -parse-ast-check) to check the
diagnostics of any ASTConsumer.
Reimplemented CheckDiagnostics to use CheckASTConsumer instead.
Added driver option -warn-dead-stores-check, which checks the
diagnostics generated by the DeadStores checker. This is implemented
using CheckASTConsumer.111
llvm-svn: 42310
both results with a single div or idiv instruction. This uses new X86ISD
nodes for DIV and IDIV which are introduced during the legalize phase
so that the SelectionDAG's CSE can automatically eliminate redundant
computations.
llvm-svn: 42308
for (i=A; i<N; i++) {
if (i < X && i > Y)
do_something();
}
is transformed into
U=min(N,X); L=max(A,Y);
for (i=L;i<U;i++)
do_somethihg();
llvm-svn: 42299
between forward and backward analyses, with trait classes being used
to implement the key differences in operations/functionality.
Converted the LiveVariables analysis to use the generic DataflowSolver. This,
along with removing some extra functionality that was not needed, reduced
the code for LiveVariables by over half.
Modified Driver code to handle the updated interface to LiveVariables.
Modified the DeadStores checker to handle the update interface to
LiveVariables.
Updated DataflowValues (generic ADT to store dataflow values) to also
store values for blocks. This is used by DeadStores. Updated some comments.
llvm-svn: 42293
is persistent. Adds/removals to a PersistentMap do not result in
a map being modified, but a new map being created. This will be useful
for path-sensitive analyses.
The current implementation mainly makes copies to implement this
functionality. If the map turns out to be extensively used, this
implementation will be replaced with a more efficient one that uses
data sharing (see comments in PersistentMap.h for more information).
llvm-svn: 42290
have situations where an SSE instruction turns into
multiple blocks, with the live range of an x87
register crossing them. To do this correctly make
sure we examine all blocks when inserting
FP_REG_KILL. PR 1697. (This was exposed by my
fix for PR 1681, but the same thing could happen
mixing x87 long double with SSE.)
llvm-svn: 42281
Chris Lattner