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[NVPTX] Remove old CONST_NOT_GEN address space that is not being used anymore and causes constants to be emitted in the global address space

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llvm-svn: 183652
This commit is contained in:
Justin Holewinski 2013-06-10 13:29:47 +00:00
parent 5f79506fd3
commit fa2e2511f8
4 changed files with 21 additions and 39 deletions
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1
lib/Target/NVPTX/MCTargetDesc/NVPTXBaseInfo.h
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@ -22,7 +22,6 @@ namespace llvm {
enum AddressSpace {
ADDRESS_SPACE_GENERIC = 0,
ADDRESS_SPACE_GLOBAL = 1,
ADDRESS_SPACE_CONST_NOT_GEN = 2, // Not part of generic space
ADDRESS_SPACE_SHARED = 3,
ADDRESS_SPACE_CONST = 4,
ADDRESS_SPACE_LOCAL = 5,

13
lib/Target/NVPTX/NVPTXAsmPrinter.cpp
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@ -1224,7 +1224,6 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
// Ptx allows variable initilization only for constant and global state
// spaces.
if (((PTy->getAddressSpace() == llvm::ADDRESS_SPACE_GLOBAL) ||
(PTy->getAddressSpace() == llvm::ADDRESS_SPACE_CONST_NOT_GEN) ||
(PTy->getAddressSpace() == llvm::ADDRESS_SPACE_CONST)) &&
GVar->hasInitializer()) {
const Constant *Initializer = GVar->getInitializer();
@ -1248,7 +1247,6 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
// Ptx allows variable initilization only for constant and
// global state spaces.
if (((PTy->getAddressSpace() == llvm::ADDRESS_SPACE_GLOBAL) ||
(PTy->getAddressSpace() == llvm::ADDRESS_SPACE_CONST_NOT_GEN) ||
(PTy->getAddressSpace() == llvm::ADDRESS_SPACE_CONST)) &&
GVar->hasInitializer()) {
const Constant *Initializer = GVar->getInitializer();
@ -1319,14 +1317,6 @@ void NVPTXAsmPrinter::emitPTXAddressSpace(unsigned int AddressSpace,
O << "global";
break;
case llvm::ADDRESS_SPACE_CONST:
// This logic should be consistent with that in
// getCodeAddrSpace() (NVPTXISelDATToDAT.cpp)
if (nvptxSubtarget.hasGenericLdSt())
O << "global";
else
O << "const";
break;
case llvm::ADDRESS_SPACE_CONST_NOT_GEN:
O << "const";
break;
case llvm::ADDRESS_SPACE_SHARED:
@ -1566,14 +1556,13 @@ void NVPTXAsmPrinter::emitFunctionParamList(const Function *F, raw_ostream &O) {
default:
O << ".ptr ";
break;
case llvm::ADDRESS_SPACE_CONST_NOT_GEN:
case llvm::ADDRESS_SPACE_CONST:
O << ".ptr .const ";
break;
case llvm::ADDRESS_SPACE_SHARED:
O << ".ptr .shared ";
break;
case llvm::ADDRESS_SPACE_GLOBAL:
case llvm::ADDRESS_SPACE_CONST:
O << ".ptr .global ";
break;
}

36
lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
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@ -127,38 +127,22 @@ SDNode *NVPTXDAGToDAGISel::Select(SDNode *N) {
static unsigned int getCodeAddrSpace(MemSDNode *N,
const NVPTXSubtarget &Subtarget) {
const Value *Src = N->getSrcValue();
if (!Src)
return NVPTX::PTXLdStInstCode::LOCAL;
return NVPTX::PTXLdStInstCode::GENERIC;
if (const PointerType *PT = dyn_cast<PointerType>(Src->getType())) {
switch (PT->getAddressSpace()) {
case llvm::ADDRESS_SPACE_LOCAL:
return NVPTX::PTXLdStInstCode::LOCAL;
case llvm::ADDRESS_SPACE_GLOBAL:
return NVPTX::PTXLdStInstCode::GLOBAL;
case llvm::ADDRESS_SPACE_SHARED:
return NVPTX::PTXLdStInstCode::SHARED;
case llvm::ADDRESS_SPACE_CONST_NOT_GEN:
return NVPTX::PTXLdStInstCode::CONSTANT;
case llvm::ADDRESS_SPACE_GENERIC:
return NVPTX::PTXLdStInstCode::GENERIC;
case llvm::ADDRESS_SPACE_PARAM:
return NVPTX::PTXLdStInstCode::PARAM;
case llvm::ADDRESS_SPACE_CONST:
// If the arch supports generic address space, translate it to GLOBAL
// for correctness.
// If the arch does not support generic address space, then the arch
// does not really support ADDRESS_SPACE_CONST, translate it to
// to CONSTANT for better performance.
if (Subtarget.hasGenericLdSt())
return NVPTX::PTXLdStInstCode::GLOBAL;
else
return NVPTX::PTXLdStInstCode::CONSTANT;
default:
break;
case llvm::ADDRESS_SPACE_LOCAL: return NVPTX::PTXLdStInstCode::LOCAL;
case llvm::ADDRESS_SPACE_GLOBAL: return NVPTX::PTXLdStInstCode::GLOBAL;
case llvm::ADDRESS_SPACE_SHARED: return NVPTX::PTXLdStInstCode::SHARED;
case llvm::ADDRESS_SPACE_GENERIC: return NVPTX::PTXLdStInstCode::GENERIC;
case llvm::ADDRESS_SPACE_PARAM: return NVPTX::PTXLdStInstCode::PARAM;
case llvm::ADDRESS_SPACE_CONST: return NVPTX::PTXLdStInstCode::CONSTANT;
default: break;
}
}
return NVPTX::PTXLdStInstCode::LOCAL;
return NVPTX::PTXLdStInstCode::GENERIC;
}
SDNode *NVPTXDAGToDAGISel::SelectLoad(SDNode *N) {

10
test/CodeGen/NVPTX/pr16278.ll Normal file
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@ -0,0 +1,10 @@
; RUN: llc < %s -march=nvptx -mcpu=sm_20 | FileCheck %s
@one_f = addrspace(4) global float 1.000000e+00, align 4
define float @foo() {
; CHECK: ld.const.f32
%val = load float addrspace(4)* @one_f
ret float %val
}