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Add support for optimization reports.

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Summary:
This patch adds backend support for -Rpass=, which indicates the name
of the optimization pass that should emit remarks stating when it
made a transformation to the code.

Pass names are taken from their DEBUG_NAME definitions.

When emitting an optimization report diagnostic, the lack of debug
information causes the diagnostic to use "<unknown>:0:0" as the
location string.

This is the back end counterpart for

http://llvm-reviews.chandlerc.com/D3226

Reviewers: qcolombet

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3227

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205774 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Diego Novillo
2014-04-08 16:42:34 +00:00
parent 60db02b6fe
commit ccbf1d2a05
5 changed files with 113 additions and 1 deletions
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11
include/llvm/IR/LLVMContext.h
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@ -29,6 +29,8 @@ class Module;
class SMDiagnostic;
class DiagnosticInfo;
template <typename T> class SmallVectorImpl;
class Function;
class DebugLoc;
/// This is an important class for using LLVM in a threaded context. It
/// (opaquely) owns and manages the core "global" data of LLVM's core
@ -125,6 +127,15 @@ public:
void emitError(const Instruction *I, const Twine &ErrorStr);
void emitError(const Twine &ErrorStr);
/// emitOptimizationRemark - Emit an optimization remark message. \p PassName
/// is the name of the pass emitting the message. If -Rpass= is given
/// and \p PassName matches the regular expression in -Rpass, then the
/// remark will be emitted. \p Fn is the function triggering the remark,
/// \p DLoc is the debug location where the diagnostic is generated.
/// \p Msg is the message string to use.
void emitOptimizationRemark(const char *PassName, const Function &Fn,
const DebugLoc &DLoc, const Twine &Msg);
private:
LLVMContext(LLVMContext&) LLVM_DELETED_FUNCTION;
void operator=(LLVMContext&) LLVM_DELETED_FUNCTION;