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AArch64: don't drop GlobalAddress offset when handling extern_weak decls. 

llvm-svn: 176258
This commit is contained in:
Tim Northover 2013-02-28 14:36:24 +00:00
parent c7e0a04433
commit b9d4fd210b
2 changed files with 23 additions and 4 deletions
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14
llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
View File

@ -1864,10 +1864,16 @@ AArch64TargetLowering::LowerGlobalAddressELF(SDValue Op,
DAG.getTargetConstantPool(GV, PtrVT, 0, 0,
AArch64II::MO_LO12),
DAG.getConstant(8, MVT::i32));
return DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), PoolAddr,
MachinePointerInfo::getConstantPool(),
/*isVolatile=*/ false, /*isNonTemporal=*/ true,
/*isInvariant=*/ true, 8);
SDValue GlobalAddr = DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), PoolAddr,
MachinePointerInfo::getConstantPool(),
/*isVolatile=*/ false,
/*isNonTemporal=*/ true,
/*isInvariant=*/ true, 8);
if (GN->getOffset() != 0)
return DAG.getNode(ISD::ADD, dl, PtrVT, GlobalAddr,
DAG.getConstant(GN->getOffset(), PtrVT));
return GlobalAddr;
}
if (Alignment == 0) {

13
llvm/test/CodeGen/AArch64/extern-weak.ll
View File

@ -12,3 +12,16 @@ define i32()* @foo() {
; CHECK: ldr x0, [{{x[0-9]+}}, #:lo12:.LCPI0_0]
}
@arr_var = extern_weak global [10 x i32]
define i32* @bar() {
%addr = getelementptr [10 x i32]* @arr_var, i32 0, i32 5
; CHECK: .LCPI1_0:
; CHECK-NEXT: .xword arr_var
; CHECK: ldr [[BASE:x[0-9]+]], [{{x[0-9]+}}, #:lo12:.LCPI1_0]
; CHECK: add x0, [[BASE]], #20
ret i32* %addr
}