| Meador Inge | dd9234a | 2012-11-11 05:54:34 +0000 | [diff] [blame] | 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) { |
| Stephen Lin | c1c7a13 | 2013-07-14 01:42:54 +0000 | [diff] [blame] | 12 | ; CHECK-LABEL: @test_simplify1( |
| Meador Inge | dd9234a | 2012-11-11 05:54:34 +0000 | [diff] [blame] | 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 | } |