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Vendor import of llvm release_40 branch r296002:

Browse Source 
https://llvm.org/svn/llvm-project/llvm/branches/release_40@296002
This commit is contained in:
Dimitry Andric 2017-02-23 19:13:48 +00:00
parent e49737eb04
commit 5a813558fc
2 changed files with 24 additions and 5 deletions
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13
lib/Target/ARM/ARMISelLowering.cpp
View File

@ -3027,17 +3027,20 @@ static SDValue promoteToConstantPool(const GlobalValue *GV, SelectionDAG &DAG,
return DAG.getNode(ARMISD::Wrapper, dl, MVT::i32, CPAddr);
}
static bool isReadOnly(const GlobalValue *GV) {
if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(GV))
GV = GA->getBaseObject();
return (isa<GlobalVariable>(GV) && cast<GlobalVariable>(GV)->isConstant()) ||
isa<Function>(GV);
}
SDValue ARMTargetLowering::LowerGlobalAddressELF(SDValue Op,
SelectionDAG &DAG) const {
EVT PtrVT = getPointerTy(DAG.getDataLayout());
SDLoc dl(Op);
const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
const TargetMachine &TM = getTargetMachine();
if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(GV))
GV = GA->getBaseObject();
bool IsRO =
(isa<GlobalVariable>(GV) && cast<GlobalVariable>(GV)->isConstant()) ||
isa<Function>(GV);
bool IsRO = isReadOnly(GV);
// promoteToConstantPool only if not generating XO text section
if (TM.shouldAssumeDSOLocal(*GV->getParent(), GV) && !Subtarget->genExecuteOnly())

16
test/CodeGen/ARM/alias_store.ll Normal file
View File

@ -0,0 +1,16 @@
; RUN: llc < %s -mtriple=arm-linux-gnueabi | FileCheck %s
@X = constant {i8, i8 } { i8 0, i8 0 }
@XA = alias i8, getelementptr inbounds ({ i8, i8 }, {i8, i8}* @X, i32 0, i32 1)
define void @f(i8** %p) align 2 {
entry:
store i8* @XA, i8 **%p, align 4
ret void
}
; CHECK: f:
; CHECK: ldr r{{.*}}, [[L:.*]]
; CHECK: [[L]]:
; CHECK-NEXT: .long XA
; CHECK: XA = X+1