diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/IA64/IA64RegisterInfo.td | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/Target/IA64/IA64RegisterInfo.td b/lib/Target/IA64/IA64RegisterInfo.td index 148ecb7eb3..8a9032c548 100644 --- a/lib/Target/IA64/IA64RegisterInfo.td +++ b/lib/Target/IA64/IA64RegisterInfo.td @@ -254,7 +254,12 @@ def GR : RegisterClass<i64, 64, { let Methods = [{ iterator allocation_order_end(MachineFunction &MF) const { - return end()-7; // 7 special registers + int numReservedRegs=7; // the 7 special registers r0,r1,r2,r12,r13 etc + // we also can't allocate registers for use as locals if they're + // already required as 'out' registers + numReservedRegs+=MF.getInfo<IA64FunctionInfo>()->outRegsUsed; + + return end()-numReservedRegs; // hide registers appropriately } }]; } |