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| author | Arnold Schwaighofer <arnold.schwaighofer@gmail.com> | 2008-04-30 09:16:33 +0000 |
|---|---|---|
| committer | Arnold Schwaighofer <arnold.schwaighofer@gmail.com> | 2008-04-30 09:16:33 +0000 |
| commit | 30e62c098b5841259f8026df1c5c45c7c1182a38 (patch) | |
| tree | 7a4da70d35c785bd6bd03768b4bf7ba3c42e24d2 /lib/Target/PowerPC/PPCCodeEmitter.cpp | |
| parent | 4f06a0f6d583691bda2cf6e37d0c35e128bc4b8d (diff) | |
Tail call optimization improvements:
Move platform independent code (lowering of possibly overwritten
arguments, check for tail call optimization eligibility) from
target X86ISelectionLowering.cpp to TargetLowering.h and
SelectionDAGISel.cpp.
Initial PowerPC tail call implementation:
Support ppc32 implemented and tested (passes my tests and
test-suite llvm-test).
Support ppc64 implemented and half tested (passes my tests).
On ppc tail call optimization is performed if
caller and callee are fastcc
call is a tail call (in tail call position, call followed by ret)
no variable argument lists or byval arguments
option -tailcallopt is enabled
Supported:
* non pic tail calls on linux/darwin
* module-local tail calls on linux(PIC/GOT)/darwin(PIC)
* inter-module tail calls on darwin(PIC)
If constraints are not met a normal call will be emitted.
A test checking the argument lowering behaviour on x86-64 was added.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50477 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/PowerPC/PPCCodeEmitter.cpp')
| -rw-r--r-- | lib/Target/PowerPC/PPCCodeEmitter.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Target/PowerPC/PPCCodeEmitter.cpp b/lib/Target/PowerPC/PPCCodeEmitter.cpp index 50c9664fbc..c0621a074f 100644 --- a/lib/Target/PowerPC/PPCCodeEmitter.cpp +++ b/lib/Target/PowerPC/PPCCodeEmitter.cpp @@ -143,7 +143,8 @@ int PPCCodeEmitter::getMachineOpValue(MachineInstr &MI, MachineOperand &MO) { MO.isConstantPoolIndex() || MO.isJumpTableIndex()) { unsigned Reloc = 0; if (MI.getOpcode() == PPC::BL_Macho || MI.getOpcode() == PPC::BL8_Macho || - MI.getOpcode() == PPC::BL_ELF || MI.getOpcode() == PPC::BL8_ELF) + MI.getOpcode() == PPC::BL_ELF || MI.getOpcode() == PPC::BL8_ELF || + MI.getOpcode() == PPC::TAILB || MI.getOpcode() == PPC::TAILB8) Reloc = PPC::reloc_pcrel_bx; else { if (TM.getRelocationModel() == Reloc::PIC_) { |