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[NVPTX] Support global variables of integer type larger than i64.

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Reviewers: tra, majnemer

Subscribers: llvm-commits, jholewinski

Differential Revision: https://reviews.llvm.org/D28825

llvm-svn: 292316
This commit is contained in:
Justin Lebar 2017-01-18 00:29:53 +00:00
parent 69ef1d8ebd
commit 5e057b68bf
2 changed files with 23 additions and 1 deletions
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15
lib/Target/NVPTX/NVPTXAsmPrinter.cpp
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@ -1230,7 +1230,8 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
else
O << " .align " << GVar->getAlignment();
if (ETy->isFloatingPointTy() || ETy->isIntegerTy() || ETy->isPointerTy()) {
if (ETy->isFloatingPointTy() || ETy->isPointerTy() ||
(ETy->isIntegerTy() && ETy->getScalarSizeInBits() <= 64)) {
O << " .";
// Special case: ABI requires that we use .u8 for predicates
if (ETy->isIntegerTy(1))
@ -1271,6 +1272,7 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
// targets that support these high level field accesses. Structs, arrays
// and vectors are lowered into arrays of bytes.
switch (ETy->getTypeID()) {
case Type::IntegerTyID: // Integers larger than 64 bits
case Type::StructTyID:
case Type::ArrayTyID:
case Type::VectorTyID:
@ -1994,6 +1996,17 @@ void NVPTXAsmPrinter::bufferAggregateConstant(const Constant *CPV,
const DataLayout &DL = getDataLayout();
int Bytes;
// Integers of arbitrary width
if (const ConstantInt *CI = dyn_cast<ConstantInt>(CPV)) {
APInt Val = CI->getValue();
for (unsigned I = 0, E = DL.getTypeAllocSize(CPV->getType()); I < E; ++I) {
uint8_t Byte = Val.getLoBits(8).getZExtValue();
aggBuffer->addBytes(&Byte, 1, 1);
Val = Val.lshr(8);
}
return;
}
// Old constants
if (isa<ConstantArray>(CPV) || isa<ConstantVector>(CPV)) {
if (CPV->getNumOperands())

9
test/CodeGen/NVPTX/global-variable-big.ll Normal file
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@ -0,0 +1,9 @@
; RUN: llc < %s | FileCheck %s
target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
target triple = "nvptx64-nvidia-cuda"
; Check that we can handle global variables of large integer type.
; (lsb) 0x0102'0304'0506...0F10 (msb)
@gv = addrspace(1) externally_initialized global i128 21345817372864405881847059188222722561, align 16
; CHECK: .visible .global .align 16 .b8 gv[16] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};