[llvm] 34040a4 - GlobalISel: Define InvalidRegBankID enum value
Matt Arsenault via llvm-commits
llvm-commits at lists.llvm.org
Thu Aug 6 09:39:56 PDT 2020
Author: Matt Arsenault
Date: 2020-08-06T12:39:49-04:00
New Revision: 34040a4f61fecaa8e901ca2e5e587df13d7097ac
URL: https://github.com/llvm/llvm-project/commit/34040a4f61fecaa8e901ca2e5e587df13d7097ac
DIFF: https://github.com/llvm/llvm-project/commit/34040a4f61fecaa8e901ca2e5e587df13d7097ac.diff
LOG: GlobalISel: Define InvalidRegBankID enum value
Added:
Modified:
llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
llvm/utils/TableGen/RegisterBankEmitter.cpp
Removed:
################################################################################
diff --git a/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
index 9c9f14427782..7e664492ee46 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
@@ -3302,10 +3302,10 @@ static unsigned regBankUnion(unsigned RB0, unsigned RB1) {
AMDGPU::SGPRRegBankID : AMDGPU::VGPRRegBankID;
}
-static int regBankBoolUnion(int RB0, int RB1) {
- if (RB0 == -1)
+static unsigned regBankBoolUnion(unsigned RB0, unsigned RB1) {
+ if (RB0 == AMDGPU::InvalidRegBankID)
return RB1;
- if (RB1 == -1)
+ if (RB1 == AMDGPU::InvalidRegBankID)
return RB0;
// vcc, vcc -> vcc
@@ -3413,8 +3413,7 @@ AMDGPURegisterBankInfo::getInstrMapping(const MachineInstr &MI) const {
//
// TODO: There are additional exec masking dependencies to analyze.
if (MI.getOpcode() == TargetOpcode::G_PHI) {
- // TODO: Generate proper invalid bank enum.
- int ResultBank = -1;
+ unsigned ResultBank = AMDGPU::InvalidRegBankID;
Register DstReg = MI.getOperand(0).getReg();
// Sometimes the result may have already been assigned a bank.
@@ -3436,7 +3435,7 @@ AMDGPURegisterBankInfo::getInstrMapping(const MachineInstr &MI) const {
ResultBank = regBankBoolUnion(ResultBank, OpBank);
}
- assert(ResultBank != -1);
+ assert(ResultBank != AMDGPU::InvalidRegBankID);
unsigned Size = MRI.getType(DstReg).getSizeInBits();
@@ -3465,9 +3464,9 @@ AMDGPURegisterBankInfo::getInstrMapping(const MachineInstr &MI) const {
const RegisterBank *DstBank
= getRegBank(MI.getOperand(0).getReg(), MRI, *TRI);
- unsigned TargetBankID = -1;
- unsigned BankLHS = -1;
- unsigned BankRHS = -1;
+ unsigned TargetBankID = AMDGPU::InvalidRegBankID;
+ unsigned BankLHS = AMDGPU::InvalidRegBankID;
+ unsigned BankRHS = AMDGPU::InvalidRegBankID;
if (DstBank) {
TargetBankID = DstBank->getID();
if (DstBank == &AMDGPU::VCCRegBank) {
diff --git a/llvm/utils/TableGen/RegisterBankEmitter.cpp b/llvm/utils/TableGen/RegisterBankEmitter.cpp
index 586f857b1fb0..9a4c448921ea 100644
--- a/llvm/utils/TableGen/RegisterBankEmitter.cpp
+++ b/llvm/utils/TableGen/RegisterBankEmitter.cpp
@@ -131,9 +131,12 @@ void RegisterBankEmitter::emitHeader(raw_ostream &OS,
// <Target>RegisterBankInfo.h
OS << "namespace llvm {\n"
<< "namespace " << TargetName << " {\n"
- << "enum {\n";
+ << "enum : unsigned {\n";
+
+ OS << "InvalidRegBankID = ~0u,\n";
+ unsigned ID = 0;
for (const auto &Bank : Banks)
- OS << " " << Bank.getEnumeratorName() << ",\n";
+ OS << " " << Bank.getEnumeratorName() << " = " << ID++ << ",\n";
OS << " NumRegisterBanks,\n"
<< "};\n"
<< "} // end namespace " << TargetName << "\n"
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