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Count the total amount of stack space used in compiled functions. 

Patch by Ivan Krasin!

llvm-svn: 136921
This commit is contained in:
Jakob Stoklund Olesen 2011-08-04 21:06:09 +00:00
parent 2c5f0e96c4
commit 63e3dec9ad
1 changed files with 4 additions and 1 deletions
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5
llvm/lib/CodeGen/PrologEpilogInserter.cpp
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@ -54,6 +54,7 @@ INITIALIZE_PASS_END(PEI, "prologepilog",
STATISTIC(NumVirtualFrameRegs, "Number of virtual frame regs encountered"); STATISTIC(NumVirtualFrameRegs, "Number of virtual frame regs encountered");
STATISTIC(NumScavengedRegs, "Number of frame index regs scavenged"); STATISTIC(NumScavengedRegs, "Number of frame index regs scavenged");
STATISTIC(NumBytesStackSpace, "Number of bytes used for stack in all functions");
/// createPrologEpilogCodeInserter - This function returns a pass that inserts /// createPrologEpilogCodeInserter - This function returns a pass that inserts
/// prolog and epilog code, and eliminates abstract frame references. /// prolog and epilog code, and eliminates abstract frame references.
@ -677,7 +678,9 @@ void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
} }
// Update frame info to pretend that this is part of the stack... // Update frame info to pretend that this is part of the stack...
MFI->setStackSize(Offset - LocalAreaOffset); int64_t StackSize = Offset - LocalAreaOffset;
MFI->setStackSize(StackSize);
NumBytesStackSpace += StackSize;
} }
/// insertPrologEpilogCode - Scan the function for modified callee saved /// insertPrologEpilogCode - Scan the function for modified callee saved