forked from OSchip/llvm-project
24 lines
742 B
LLVM
24 lines
742 B
LLVM
; This test makes sure that memmove instructions are properly eliminated.
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;
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; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | \
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; RUN: not grep {call void @llvm.memmove}
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%S = internal constant [33 x sbyte] c"panic: restorelist inconsistency\00"
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implementation
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declare void %llvm.memmove.i32(sbyte*, sbyte*, uint, uint)
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void %test1(sbyte* %A, sbyte* %B, uint %N) {
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;; 0 bytes -> noop.
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call void %llvm.memmove.i32(sbyte* %A, sbyte* %B, uint 0, uint 1)
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ret void
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}
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void %test2(sbyte *%A, uint %N) {
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;; dest can't alias source since we can't write to source!
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call void %llvm.memmove.i32(sbyte* %A, sbyte* getelementptr ([33 x sbyte]* %S, int 0, int 0),
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uint %N, uint 1)
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ret void
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}
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