21 lines
795 B
LLVM
21 lines
795 B
LLVM
; RUN: llc -march=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(i8*) {
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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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%c = bitcast [22 x i8]* %a to i8*
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%d = getelementptr inbounds [22 x i8], [22 x i8]* %b, i32 0, i32 2
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %c, i8* %d, i32 20, i32 1, i1 false)
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%e = getelementptr inbounds [22 x i8], [22 x i8]* %b, i32 0, i32 6
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %0, i8* %e, i32 12, i32 1, i1 false)
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ret void
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}
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declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
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