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Don't drop function/call return attributes like 'nounwind'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46645 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -404,6 +404,10 @@ Function *ArgPromotion::DoPromotion(Function *F,
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ParamAttrsVector ParamAttrsVec;
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const ParamAttrsList *PAL = F->getParamAttrs();
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// Add any return attributes.
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if (unsigned attrs = PAL ? PAL->getParamAttrs(0) : 0)
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ParamAttrsVec.push_back(ParamAttrsWithIndex::get(0, attrs));
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unsigned ArgIndex = 1;
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for (Function::arg_iterator I = F->arg_begin(), E = F->arg_end(); I != E;
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++I, ++ArgIndex) {
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@ -491,6 +495,10 @@ Function *ArgPromotion::DoPromotion(Function *F,
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Instruction *Call = CS.getInstruction();
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PAL = CS.getParamAttrs();
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// Add any return attributes.
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if (unsigned attrs = PAL ? PAL->getParamAttrs(0) : 0)
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ParamAttrsVec.push_back(ParamAttrsWithIndex::get(0, attrs));
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// Loop over the operands, inserting GEP and loads in the caller as
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// appropriate.
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CallSite::arg_iterator AI = CS.arg_begin();
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15
test/Transforms/ArgumentPromotion/2008-02-01-ReturnAttrs.ll
Normal file
15
test/Transforms/ArgumentPromotion/2008-02-01-ReturnAttrs.ll
Normal file
@ -0,0 +1,15 @@
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; RUN: llvm-as < %s | opt -argpromotion | llvm-dis | grep nounwind | count 2
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define internal i32 @deref(i32* %x) nounwind {
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entry:
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%tmp2 = load i32* %x, align 4 ; <i32> [#uses=1]
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ret i32 %tmp2
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}
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define i32 @f(i32 %x) {
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entry:
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%x_addr = alloca i32 ; <i32*> [#uses=2]
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store i32 %x, i32* %x_addr, align 4
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%tmp1 = call i32 @deref( i32* %x_addr ) nounwind ; <i32> [#uses=1]
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ret i32 %tmp1
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}
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