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Enhance both TargetLibraryInfo and SelectionDAGBuilder so that the latter can use the former to prevent the formation of libm SDNode's when -fno-builtin is passed.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146193 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson
2011-12-08 22:15:21 +00:00
parent 6b044c2609
commit 243eb9ecbb
6 changed files with 82 additions and 16 deletions
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lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+5 -1
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@@ -41,6 +41,7 @@
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetIntrinsicInfo.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetLibraryInfo.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
@@ -269,6 +270,7 @@ SelectionDAGISel::SelectionDAGISel(const TargetMachine &tm,
initializeGCModuleInfoPass(*PassRegistry::getPassRegistry());
initializeAliasAnalysisAnalysisGroup(*PassRegistry::getPassRegistry());
initializeBranchProbabilityInfoPass(*PassRegistry::getPassRegistry());
initializeTargetLibraryInfoPass(*PassRegistry::getPassRegistry());
}
SelectionDAGISel::~SelectionDAGISel() {
@@ -282,6 +284,7 @@ void SelectionDAGISel::getAnalysisUsage(AnalysisUsage &AU) const {
AU.addPreserved<AliasAnalysis>();
AU.addRequired<GCModuleInfo>();
AU.addPreserved<GCModuleInfo>();
AU.addRequired<TargetLibraryInfo>();
if (UseMBPI && OptLevel != CodeGenOpt::None)
AU.addRequired<BranchProbabilityInfo>();
MachineFunctionPass::getAnalysisUsage(AU);
@@ -339,6 +342,7 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
MF = &mf;
RegInfo = &MF->getRegInfo();
AA = &getAnalysis<AliasAnalysis>();
LibInfo = &getAnalysis<TargetLibraryInfo>();
GFI = Fn.hasGC() ? &getAnalysis<GCModuleInfo>().getFunctionInfo(Fn) : 0;
DEBUG(dbgs() << "\n\n\n=== " << Fn.getName() << "\n");
@@ -353,7 +357,7 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
else
FuncInfo->BPI = 0;
SDB->init(GFI, *AA);
SDB->init(GFI, *AA, LibInfo);
SelectAllBasicBlocks(Fn);