diff options
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/ScalarReplAggregates.cpp | 7 | ||||
| -rw-r--r-- | llvm/test/Transforms/ScalarRepl/2010-11-24-IndirectVoid.ll | 13 |
2 files changed, 19 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/ScalarReplAggregates.cpp b/llvm/lib/Transforms/Scalar/ScalarReplAggregates.cpp index 3d676b2b246..3b4f4439d4f 100644 --- a/llvm/lib/Transforms/Scalar/ScalarReplAggregates.cpp +++ b/llvm/lib/Transforms/Scalar/ScalarReplAggregates.cpp @@ -1783,7 +1783,7 @@ static bool PointsToConstantGlobal(Value *V) { /// see any stores or other unknown uses. If we see pointer arithmetic, keep /// track of whether it moves the pointer (with isOffset) but otherwise traverse /// the uses. If we see a memcpy/memmove that targets an unoffseted pointer to -/// the alloca, and if the source pointer is a pointer to a constant global, we +/// the alloca, and if the source pointer is a pointer to a constant global, we /// can optimize this. static bool isOnlyCopiedFromConstantGlobal(Value *V, MemTransferInst *&TheCopy, bool isOffset) { @@ -1816,6 +1816,11 @@ static bool isOnlyCopiedFromConstantGlobal(Value *V, MemTransferInst *&TheCopy, // load and we can ignore it. if (CS.onlyReadsMemory()) continue; + + // If this is the function being called then we treat it like a load and + // ignore it. + if (CS.isCallee(UI)) + continue; // If this is being passed as a byval argument, the caller is making a // copy, so it is only a read of the alloca. diff --git a/llvm/test/Transforms/ScalarRepl/2010-11-24-IndirectVoid.ll b/llvm/test/Transforms/ScalarRepl/2010-11-24-IndirectVoid.ll new file mode 100644 index 00000000000..3e07b15a229 --- /dev/null +++ b/llvm/test/Transforms/ScalarRepl/2010-11-24-IndirectVoid.ll @@ -0,0 +1,13 @@ +; RUN: opt -scalarrepl -disable-output %s +; PR8680 + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" + +define void @main() nounwind { +entry: + %memtmp = alloca i32, align 4 + %0 = bitcast i32* %memtmp to void ()* + call void %0() nounwind + ret void +} + |
