20 lines
716 B
LLVM
20 lines
716 B
LLVM
; RUN: llc -mtriple=mips -mcpu=mips32r2 < %s -o /dev/null
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; Test that SelectionDAG does not crash during DAGCombine when two pointers
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; to the stack match with differing bases and offsets when expanding memcpy.
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; This could result in one of the pointers being considered dereferenceable
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; and other not.
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define void @foo(ptr) {
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start:
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%a = alloca [22 x i8]
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%b = alloca [22 x i8]
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%d = getelementptr inbounds [22 x i8], ptr %b, i32 0, i32 2
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call void @llvm.memcpy.p0.p0.i32(ptr %a, ptr %d, i32 20, i1 false)
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%e = getelementptr inbounds [22 x i8], ptr %b, i32 0, i32 6
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call void @llvm.memcpy.p0.p0.i32(ptr %0, ptr %e, i32 12, i1 false)
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ret void
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}
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declare void @llvm.memcpy.p0.p0.i32(ptr, ptr, i32, i1)
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