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* Enable allocation of registers r2-r10

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* Allocate registers 13-31 backwards (to be able to store them all at once)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14896 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman
2004-07-16 20:35:20 +00:00
parent 2bf5438931
commit 86fd274790
1 changed files with 7 additions and 4 deletions
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11
lib/Target/PowerPC/PPCRegisterInfo.td
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@@ -73,14 +73,17 @@ def TBL : SPR<4>;
def TBU : SPR<5>; def TBU : SPR<5>;
/// Register classes /// Register classes
// Allocate volatiles first
// then nonvolatiles in reverse order since stmw/lmw save from rN to r31
def GPRC : def GPRC :
RegisterClass<i32, 4, RegisterClass<i32, 4,
[R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, [R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12,
R26, R27, R28, R29, R30, R31, R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10]> R31, R30, R29, R28, R27, R26, R25, R24, R23, R22, R21, R20, R19, R18, R17,
R16, R15, R14, R13, R0, R1]>
{ {
let Methods = [{ let Methods = [{
iterator allocation_order_end(MachineFunction &MF) const { iterator allocation_order_end(MachineFunction &MF) const {
return end()-10; // do not allocate r0-r10 return end()-2;
} }
}]; }];
} }
@@ -89,4 +92,4 @@ def FPRC : RegisterClass<f64, 8, [F0, F1, F2, F3, F4, F5, F6, F7,
F8, F9, F10, F11, F12, F13, F14, F15, F16, F17, F18, F19, F20, F21, F8, F9, F10, F11, F12, F13, F14, F15, F16, F17, F18, F19, F20, F21,
F22, F23, F24, F25, F26, F27, F28, F29, F30, F31]>; F22, F23, F24, F25, F26, F27, F28, F29, F30, F31]>;
//def CRRC : RegisterClass<i4, 1, [CR0, CR1, CR2, CR3, CR4, CR5, CR6, CR7]>; //def CRRC : RegisterClass<i32, 4, [CR0, CR1, CR2, CR3, CR4, CR5, CR6, CR7]>;