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Fix X86/2005-05-08-FPStackifierPHI.ll: ugly gross hack.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21801 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -14,9 +14,10 @@
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#include "X86.h"
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#include "X86InstrBuilder.h"
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#include "X86RegisterInfo.h"
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#include "llvm/Constants.h" // FIXME: REMOVE
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#include "llvm/Constants.h"
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#include "llvm/Instructions.h"
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#include "llvm/Function.h"
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#include "llvm/CodeGen/MachineConstantPool.h" // FIXME: REMOVE
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#include "llvm/CodeGen/MachineConstantPool.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/CodeGen/SelectionDAG.h"
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@ -25,6 +26,7 @@
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#include "llvm/Target/TargetData.h"
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#include "llvm/Target/TargetLowering.h"
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#include "llvm/Target/TargetOptions.h"
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#include "llvm/Support/CFG.h"
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#include "llvm/Support/MathExtras.h"
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#include "llvm/ADT/Statistic.h"
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#include <set>
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@ -461,6 +463,21 @@ void ISel::InstructionSelectBasicBlock(SelectionDAG &DAG) {
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}
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}
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// Final check, check LLVM BB's that are successors to the LLVM BB
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// corresponding to BB for FP PHI nodes.
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const BasicBlock *LLVMBB = BB->getBasicBlock();
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const PHINode *PN;
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if (!ContainsFPCode)
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for (succ_const_iterator SI = succ_begin(LLVMBB), E = succ_end(LLVMBB);
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SI != E && !ContainsFPCode; ++SI)
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for (BasicBlock::const_iterator II = SI->begin();
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(PN = dyn_cast<PHINode>(II)); ++II)
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if (PN->getType()->isFloatingPoint()) {
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ContainsFPCode = true;
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break;
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}
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// Insert FP_REG_KILL instructions into basic blocks that need them. This
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// only occurs due to the floating point stackifier not being aggressive
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// enough to handle arbitrary global stackification.
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