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[NVPTX] Emit .weak when linkage is not external, internal, or private

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211926 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Justin Holewinski 2014-06-27 18:35:10 +00:00
parent d51ee46dc5
commit a54609ed93
2 changed files with 19 additions and 0 deletions
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7
lib/Target/NVPTX/NVPTXAsmPrinter.cpp
View File

@ -1305,6 +1305,10 @@ bool NVPTXAsmPrinter::doFinalization(Module &M) {
// external global variable with init -> .visible
// external without init -> .extern
// appending -> not allowed, assert.
// for any linkage other than
// internal, private, linker_private,
// linker_private_weak, linker_private_weak_def_auto,
// we emit -> .weak.
void NVPTXAsmPrinter::emitLinkageDirective(const GlobalValue *V,
raw_ostream &O) {
@ -1330,6 +1334,9 @@ void NVPTXAsmPrinter::emitLinkageDirective(const GlobalValue *V,
msg.append(V->getName().str());
msg.append("has unsupported appending linkage type");
llvm_unreachable(msg.c_str());
} else if (!V->hasInternalLinkage() &&
!V->hasPrivateLinkage()) {
O << ".weak ";
}
}
}

12
test/CodeGen/NVPTX/weak-linkage.ll Normal file
View File

@ -0,0 +1,12 @@
; RUN: llc < %s -march=nvptx -mcpu=sm_20 | FileCheck %s
; CHECK: .weak .func foo
define weak void @foo() {
ret void
}
; CHECK: .visible .func bar
define void @bar() {
ret void
}