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Use std::stable_sort instead of std::sort when sorting stack slots

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to guarantee deterministic code generation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168074 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ulrich Weigand 2012-11-15 19:33:30 +00:00
parent 7c6694946d
commit f38aa4272c
1 changed files with 3 additions and 1 deletions
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4
lib/CodeGen/StackColoring.cpp
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@ -720,7 +720,9 @@ bool StackColoring::runOnMachineFunction(MachineFunction &Func) {
// and continue.
// Sort the slots according to their size. Place unused slots at the end.
std::sort(SortedSlots.begin(), SortedSlots.end(), SlotSizeSorter(MFI));
// Use stable sort to guarantee deterministic code generation.
std::stable_sort(SortedSlots.begin(), SortedSlots.end(),
SlotSizeSorter(MFI));
bool Chanded = true;
while (Chanded) {