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Really reserve R2 on PPC Darwin. PR 6314.

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llvm-svn: 96399
This commit is contained in:
Dale Johannesen 2010-02-16 21:53:27 +00:00
parent bebe8e55dc
commit f31a06506f
1 changed files with 4 additions and 8 deletions
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12
lib/Target/PowerPC/PPCRegisterInfo.td
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@ -287,10 +287,8 @@ def GPRC : RegisterClass<"PPC", [i32], 32,
GPRCClass::allocation_order_begin(const MachineFunction &MF) const {
// 32-bit SVR4 ABI: r2 is reserved for the OS.
// 64-bit SVR4 ABI: r2 is reserved for the TOC pointer.
if (!MF.getTarget().getSubtarget<PPCSubtarget>().isDarwin())
return begin()+1;
return begin();
// Darwin: R2 is reserved for CR save/restore sequence.
return begin()+1;
}
GPRCClass::iterator
GPRCClass::allocation_order_end(const MachineFunction &MF) const {
@ -325,10 +323,8 @@ def G8RC : RegisterClass<"PPC", [i64], 64,
G8RCClass::iterator
G8RCClass::allocation_order_begin(const MachineFunction &MF) const {
// 64-bit SVR4 ABI: r2 is reserved for the TOC pointer.
if (!MF.getTarget().getSubtarget<PPCSubtarget>().isDarwin())
return begin()+1;
return begin();
// Darwin: r2 is reserved for CR save/restore sequence.
return begin()+1;
}
G8RCClass::iterator
G8RCClass::allocation_order_end(const MachineFunction &MF) const {