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Add a new pass FunctionTargetTransformInfo. This pass serves as a

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shim between the TargetTransformInfo immutable pass and the Subtarget
via the TargetMachine and Function. Migrate a single call from
BasicTargetTransformInfo as an example and provide shims where TargetMachine
begins taking a Function to determine the subtarget.

No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218004 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
2014-09-18 00:34:14 +00:00
parent 6693d0de3e
commit 757c90dd00
10 changed files with 135 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/CodeGen/BasicTargetTransformInfo.cpp
+3 -3
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@@ -92,7 +92,7 @@ public:
unsigned getJumpBufSize() const override;
bool shouldBuildLookupTables() const override;
bool haveFastSqrt(Type *Ty) const override;
void getUnrollingPreferences(Loop *L,
void getUnrollingPreferences(const Function *F, Loop *L,
UnrollingPreferences &UP) const override;
/// @}
@@ -199,7 +199,7 @@ bool BasicTTI::haveFastSqrt(Type *Ty) const {
return TLI->isTypeLegal(VT) && TLI->isOperationLegalOrCustom(ISD::FSQRT, VT);
}
void BasicTTI::getUnrollingPreferences(Loop *L,
void BasicTTI::getUnrollingPreferences(const Function *F, Loop *L,
UnrollingPreferences &UP) const {
// This unrolling functionality is target independent, but to provide some
// motivation for its intended use, for x86:
@@ -225,7 +225,7 @@ void BasicTTI::getUnrollingPreferences(Loop *L,
// until someone finds a case where it matters in practice.
unsigned MaxOps;
const TargetSubtargetInfo *ST = &TM->getSubtarget<TargetSubtargetInfo>();
const TargetSubtargetInfo *ST = &TM->getSubtarget<TargetSubtargetInfo>(F);
if (PartialUnrollingThreshold.getNumOccurrences() > 0)
MaxOps = PartialUnrollingThreshold;
else if (ST->getSchedModel().LoopMicroOpBufferSize > 0)