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Allow addrspacecast in global aliases

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llvm-svn: 198349
This commit is contained in:
Matt Arsenault 2014-01-02 20:55:01 +00:00
parent 91f4861f4f
commit 1933b66fad
3 changed files with 11 additions and 2 deletions
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3
lib/IR/Globals.cpp
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@ -237,7 +237,8 @@ GlobalValue *GlobalAlias::getAliasedGlobal() {
return GV;
ConstantExpr *CE = cast<ConstantExpr>(C);
assert((CE->getOpcode() == Instruction::BitCast ||
assert((CE->getOpcode() == Instruction::BitCast ||
CE->getOpcode() == Instruction::AddrSpaceCast ||
CE->getOpcode() == Instruction::GetElementPtr) &&
"Unsupported aliasee");

4
lib/IR/Verifier.cpp
View File

@ -550,9 +550,11 @@ void Verifier::visitGlobalAlias(GlobalAlias &GA) {
ConstantExpr *CE = dyn_cast<ConstantExpr>(Aliasee);
Assert1(CE &&
(CE->getOpcode() == Instruction::BitCast ||
CE->getOpcode() == Instruction::AddrSpaceCast ||
CE->getOpcode() == Instruction::GetElementPtr) &&
isa<GlobalValue>(CE->getOperand(0)),
"Aliasee should be either GlobalValue or bitcast of GlobalValue",
"Aliasee should be either GlobalValue, bitcast or "
"addrspacecast of GlobalValue",
&GA);
if (CE->getOpcode() == Instruction::BitCast) {

6
test/Assembler/addrspacecast-alias.ll Normal file
View File

@ -0,0 +1,6 @@
; RUN: llvm-as -disable-output %s
; Test that global aliases are allowed to be constant addrspacecast
@i = internal addrspace(1) global i8 42
@ia = alias internal i8 addrspace(2)* addrspacecast (i8 addrspace(1)* @i to i8 addrspace(2)*)