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      1 ; Test that the memcpy library call simplifier works correctly.
      2 ;
      3 ; RUN: opt < %s -instcombine -S | FileCheck %s
      4 
      5 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
      6 
      7 declare i8* @memcpy(i8*, i8*, i32)
      8 
      9 ; Check memcpy(mem1, mem2, size) -> llvm.memcpy(mem1, mem2, size, 1).
     10 
     11 define i8* @test_simplify1(i8* %mem1, i8* %mem2, i32 %size) {
     12 ; CHECK-LABEL: @test_simplify1(
     13   %ret = call i8* @memcpy(i8* %mem1, i8* %mem2, i32 %size)
     14 ; CHECK: call void @llvm.memcpy
     15   ret i8* %ret
     16 ; CHECK: ret i8* %mem1
     17 }
     18