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Clarify ARM calling conventions.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151113 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2012-02-22 01:07:19 +00:00
parent a240743ad9
commit 209600bb88
1 changed files with 2 additions and 0 deletions
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lib/Target/ARM/ARMBaseInstrInfo.cpp
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@ -1401,6 +1401,8 @@ bool ARMBaseInstrInfo::isSchedulingBoundary(const MachineInstr *MI,
// stack slot reference to depend on the instruction that does the
// modification.
// Calls don't actually change the stack pointer, even if they have imp-defs.
// No ARM calling conventions change the stack pointer. (X86 calling
// conventions sometimes do).
if (!MI->isCall() && MI->definesRegister(ARM::SP))
return true;