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-rw-r--r--test/Transforms/InstCombine/call-intrinsics.ll17
1 files changed, 17 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/call-intrinsics.ll b/test/Transforms/InstCombine/call-intrinsics.ll
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+++ b/test/Transforms/InstCombine/call-intrinsics.ll
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+; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis
+
+declare void %llvm.memmove.i32(sbyte*, sbyte*, uint, uint)
+declare void %llvm.memcpy.i32(sbyte*, sbyte*, uint, uint)
+declare void %llvm.memset.i32(sbyte*, ubyte, uint, uint)
+
+%X = global sbyte 0
+%Y = global sbyte 12
+
+void %zero_byte_test() {
+ ; These process zero bytes, so they are a noop.
+ call void %llvm.memmove.i32(sbyte* %X, sbyte* %Y, uint 0, uint 100)
+ call void %llvm.memcpy.i32(sbyte* %X, sbyte* %Y, uint 0, uint 100)
+ call void %llvm.memset.i32(sbyte* %X, ubyte 123, uint 0, uint 100)
+ ret void
+}
+