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Emit warnings if vectorization is forced and fails.

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This patch modifies the existing DiagnosticInfo system to create a generic base
class that is inherited to produce diagnostic-based warnings. This is used by
the loop vectorizer to trigger a warning when vectorization is forced and
fails. Several tests have been added to verify this behavior.

Reviewed by: Arnold Schwaighofer


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213110 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tyler Nowicki
2014-07-16 00:36:00 +00:00
parent 7e752a311a
commit 77f03040d5
6 changed files with 199 additions and 28 deletions
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72
include/llvm/IR/DiagnosticInfo.h
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@@ -51,6 +51,7 @@ enum DiagnosticKind {
DK_OptimizationRemark,
DK_OptimizationRemarkMissed,
DK_OptimizationRemarkAnalysis,
DK_OptimizationWarning,
DK_FirstPluginKind
};
@@ -239,7 +240,7 @@ private:
};
/// Common features for diagnostics dealing with optimization remarks.
class DiagnosticInfoOptimizationRemarkBase : public DiagnosticInfo {
class DiagnosticInfoOptimizationBase : public DiagnosticInfo {
public:
/// \p PassName is the name of the pass emitting this diagnostic.
/// \p Fn is the function where the diagnostic is being emitted. \p DLoc is
@@ -248,10 +249,11 @@ public:
/// location. \p Msg is the message to show. Note that this class does not
/// copy this message, so this reference must be valid for the whole life time
/// of the diagnostic.
DiagnosticInfoOptimizationRemarkBase(enum DiagnosticKind Kind,
const char *PassName, const Function &Fn,
const DebugLoc &DLoc, const Twine &Msg)
: DiagnosticInfo(Kind, DS_Remark), PassName(PassName), Fn(Fn), DLoc(DLoc),
DiagnosticInfoOptimizationBase(enum DiagnosticKind Kind,
enum DiagnosticSeverity Severity,
const char *PassName, const Function &Fn,
const DebugLoc &DLoc, const Twine &Msg)
: DiagnosticInfo(Kind, Severity), PassName(PassName), Fn(Fn), DLoc(DLoc),
Msg(Msg) {}
/// \see DiagnosticInfo::print.
@@ -302,8 +304,7 @@ private:
};
/// Diagnostic information for applied optimization remarks.
class DiagnosticInfoOptimizationRemark
: public DiagnosticInfoOptimizationRemarkBase {
class DiagnosticInfoOptimizationRemark : public DiagnosticInfoOptimizationBase {
public:
/// \p PassName is the name of the pass emitting this diagnostic. If
/// this name matches the regular expression given in -Rpass=, then the
@@ -315,20 +316,20 @@ public:
/// must be valid for the whole life time of the diagnostic.
DiagnosticInfoOptimizationRemark(const char *PassName, const Function &Fn,
const DebugLoc &DLoc, const Twine &Msg)
: DiagnosticInfoOptimizationRemarkBase(DK_OptimizationRemark, PassName,
Fn, DLoc, Msg) {}
: DiagnosticInfoOptimizationBase(DK_OptimizationRemark, DS_Remark,
PassName, Fn, DLoc, Msg) {}
static bool classof(const DiagnosticInfo *DI) {
return DI->getKind() == DK_OptimizationRemark;
}
/// \see DiagnosticInfoOptimizationRemarkBase::isEnabled.
/// \see DiagnosticInfoOptimizationBase::isEnabled.
virtual bool isEnabled() const override;
};
/// Diagnostic information for missed-optimization remarks.
class DiagnosticInfoOptimizationRemarkMissed
: public DiagnosticInfoOptimizationRemarkBase {
: public DiagnosticInfoOptimizationBase {
public:
/// \p PassName is the name of the pass emitting this diagnostic. If
/// this name matches the regular expression given in -Rpass-missed=, then the
@@ -341,20 +342,20 @@ public:
DiagnosticInfoOptimizationRemarkMissed(const char *PassName,
const Function &Fn,
const DebugLoc &DLoc, const Twine &Msg)
: DiagnosticInfoOptimizationRemarkBase(DK_OptimizationRemarkMissed,
PassName, Fn, DLoc, Msg) {}
: DiagnosticInfoOptimizationBase(DK_OptimizationRemarkMissed, DS_Remark,
PassName, Fn, DLoc, Msg) {}
static bool classof(const DiagnosticInfo *DI) {
return DI->getKind() == DK_OptimizationRemarkMissed;
}
/// \see DiagnosticInfoOptimizationRemarkBase::isEnabled.
/// \see DiagnosticInfoOptimizationBase::isEnabled.
virtual bool isEnabled() const override;
};
/// Diagnostic information for optimization analysis remarks.
class DiagnosticInfoOptimizationRemarkAnalysis
: public DiagnosticInfoOptimizationRemarkBase {
: public DiagnosticInfoOptimizationBase {
public:
/// \p PassName is the name of the pass emitting this diagnostic. If
/// this name matches the regular expression given in -Rpass-analysis=, then
@@ -368,14 +369,14 @@ public:
const Function &Fn,
const DebugLoc &DLoc,
const Twine &Msg)
: DiagnosticInfoOptimizationRemarkBase(DK_OptimizationRemarkAnalysis,
PassName, Fn, DLoc, Msg) {}
: DiagnosticInfoOptimizationBase(DK_OptimizationRemarkAnalysis, DS_Remark,
PassName, Fn, DLoc, Msg) {}
static bool classof(const DiagnosticInfo *DI) {
return DI->getKind() == DK_OptimizationRemarkAnalysis;
}
/// \see DiagnosticInfoOptimizationRemarkBase::isEnabled.
/// \see DiagnosticInfoOptimizationBase::isEnabled.
virtual bool isEnabled() const override;
};
@@ -411,6 +412,41 @@ void emitOptimizationRemarkAnalysis(LLVMContext &Ctx, const char *PassName,
const Function &Fn, const DebugLoc &DLoc,
const Twine &Msg);
/// Diagnostic information for optimization warnings.
class DiagnosticInfoOptimizationWarning
: public DiagnosticInfoOptimizationBase {
public:
/// \p Fn is the function where the diagnostic is being emitted. \p DLoc is
/// the location information to use in the diagnostic. If line table
/// information is available, the diagnostic will include the source code
/// location. \p Msg is the message to show. Note that this class does not
/// copy this message, so this reference must be valid for the whole life time
/// of the diagnostic.
DiagnosticInfoOptimizationWarning(const Function &Fn, const DebugLoc &DLoc,
const Twine &Msg)
: DiagnosticInfoOptimizationBase(DK_OptimizationWarning, DS_Warning,
nullptr, Fn, DLoc, Msg) {}
static bool classof(const DiagnosticInfo *DI) {
return DI->getKind() == DK_OptimizationWarning;
}
/// \see DiagnosticInfoOptimizationBase::isEnabled.
virtual bool isEnabled() const override;
};
/// Emit a warning when loop vectorization is specified but fails. \p Fn is the
/// function triggering the warning, \p DLoc is the debug location where the
/// diagnostic is generated. \p Msg is the message string to use.
void emitLoopVectorizeWarning(LLVMContext &Ctx, const Function &Fn,
const DebugLoc &DLoc, const Twine &Msg);
/// Emit a warning when loop interleaving is specified but fails. \p Fn is the
/// function triggering the warning, \p DLoc is the debug location where the
/// diagnostic is generated. \p Msg is the message string to use.
void emitLoopInterleaveWarning(LLVMContext &Ctx, const Function &Fn,
const DebugLoc &DLoc, const Twine &Msg);
} // End namespace llvm
#endif