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Restore real bit lengths on PPC register numbers

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As suggested by Bill Schmidt (in reviewing r178067), use the real register
number bit lengths (which is self-documenting, and prevents using illegal
numbers), and set only the relevant bits in HWEncoding (which defaults to 0).

No functionality change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178077 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel 2013-03-26 21:50:26 +00:00
parent 82e7c4f533
commit 1a0034c74a
1 changed files with 12 additions and 12 deletions
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24
lib/Target/PowerPC/PPCRegisterInfo.td
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@ -26,8 +26,8 @@ class PPCReg<string n> : Register<n> {
// We identify all our registers with a 5-bit ID, for consistency's sake.
// GPR - One of the 32 32-bit general-purpose registers
class GPR<bits<16> num, string n> : PPCReg<n> {
let HWEncoding = num;
class GPR<bits<5> num, string n> : PPCReg<n> {
let HWEncoding{4-0} = num;
}
// GP8 - One of the 32 64-bit general-purpose registers
@ -38,29 +38,29 @@ class GP8<GPR SubReg, string n> : PPCReg<n> {
}
// SPR - One of the 32-bit special-purpose registers
class SPR<bits<16> num, string n> : PPCReg<n> {
let HWEncoding = num;
class SPR<bits<10> num, string n> : PPCReg<n> {
let HWEncoding{9-0} = num;
}
// FPR - One of the 32 64-bit floating-point registers
class FPR<bits<16> num, string n> : PPCReg<n> {
let HWEncoding = num;
class FPR<bits<5> num, string n> : PPCReg<n> {
let HWEncoding{4-0} = num;
}
// VR - One of the 32 128-bit vector registers
class VR<bits<16> num, string n> : PPCReg<n> {
let HWEncoding = num;
class VR<bits<5> num, string n> : PPCReg<n> {
let HWEncoding{4-0} = num;
}
// CR - One of the 8 4-bit condition registers
class CR<bits<16> num, string n, list<Register> subregs> : PPCReg<n> {
let HWEncoding = num;
class CR<bits<3> num, string n, list<Register> subregs> : PPCReg<n> {
let HWEncoding{2-0} = num;
let SubRegs = subregs;
}
// CRBIT - One of the 32 1-bit condition register fields
class CRBIT<bits<16> num, string n> : PPCReg<n> {
let HWEncoding = num;
class CRBIT<bits<5> num, string n> : PPCReg<n> {
let HWEncoding{4-0} = num;
}
// General-purpose registers