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author | Duncan Sands <baldrick@free.fr> | 2008-01-11 23:13:45 +0000 |
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committer | Duncan Sands <baldrick@free.fr> | 2008-01-11 23:13:45 +0000 |
commit | bfc5ae6df028a455efd24dc0bb223e717e0e3655 (patch) | |
tree | b81366d71f63bd92595804620db54b71d2351513 /lib/Transforms/IPO | |
parent | 3d794786718a62f998639a7061dff24c1e0ebd5e (diff) | |
download | llvm-bfc5ae6df028a455efd24dc0bb223e717e0e3655.tar.gz llvm-bfc5ae6df028a455efd24dc0bb223e717e0e3655.tar.bz2 llvm-bfc5ae6df028a455efd24dc0bb223e717e0e3655.tar.xz |
When DAE drops the varargs part of a function, ensure any
attributes on the vararg call arguments are also dropped.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45892 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/IPO')
-rw-r--r-- | lib/Transforms/IPO/DeadArgumentElimination.cpp | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/lib/Transforms/IPO/DeadArgumentElimination.cpp b/lib/Transforms/IPO/DeadArgumentElimination.cpp index 3550d71352..b8770121eb 100644 --- a/lib/Transforms/IPO/DeadArgumentElimination.cpp +++ b/lib/Transforms/IPO/DeadArgumentElimination.cpp @@ -175,16 +175,29 @@ bool DAE::DeleteDeadVarargs(Function &Fn) { // Pass all the same arguments. Args.assign(CS.arg_begin(), CS.arg_begin()+NumArgs); + // Drop any attributes that were on the vararg arguments. + const ParamAttrsList *PAL = CS.getParamAttrs(); + if (PAL && PAL->getParamIndex(PAL->size() - 1) > NumArgs) { + ParamAttrsVector ParamAttrsVec; + for (unsigned i = 0; PAL->getParamIndex(i) <= NumArgs; ++i) { + ParamAttrsWithIndex PAWI; + PAWI = ParamAttrsWithIndex::get(PAL->getParamIndex(i), + PAL->getParamAttrsAtIndex(i)); + ParamAttrsVec.push_back(PAWI); + } + PAL = ParamAttrsList::get(ParamAttrsVec); + } + Instruction *New; if (InvokeInst *II = dyn_cast<InvokeInst>(Call)) { New = new InvokeInst(NF, II->getNormalDest(), II->getUnwindDest(), Args.begin(), Args.end(), "", Call); cast<InvokeInst>(New)->setCallingConv(CS.getCallingConv()); - cast<InvokeInst>(New)->setParamAttrs(CS.getParamAttrs()); + cast<InvokeInst>(New)->setParamAttrs(PAL); } else { New = new CallInst(NF, Args.begin(), Args.end(), "", Call); cast<CallInst>(New)->setCallingConv(CS.getCallingConv()); - cast<CallInst>(New)->setParamAttrs(CS.getParamAttrs()); + cast<CallInst>(New)->setParamAttrs(PAL); if (cast<CallInst>(Call)->isTailCall()) cast<CallInst>(New)->setTailCall(); } |