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gerrit-public.fairphone.software / fp2-dev / platform / external / llvm / 0ece9a12acd166b937fe615a24ee2135d92d66c1 / . / test / CodeGen / X86 / memcpy.ll
blob: 16bf7c5a38c9bdd9a529190af8c73150ad7ca5e4 [file] [log] [blame]
Chris Lattner0ece9a12010-05-31 17:27:17 +0000[diff] [blame^]1; RUN: llc < %s -march=x86-64 | FileCheck %s
Rafael Espindola068317b2007-09-28 12:53:01 +0000[diff] [blame]2
Chris Lattner0ece9a12010-05-31 17:27:17 +0000[diff] [blame^]3declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
Rafael Espindola068317b2007-09-28 12:53:01 +0000[diff] [blame]4
Chris Lattner0ece9a12010-05-31 17:27:17 +0000[diff] [blame^]5
6; Variable memcpy's should lower to calls.
7define i8* @test1(i8* %a, i8* %b, i64 %n) nounwind {
Rafael Espindola068317b2007-09-28 12:53:01 +0000[diff] [blame]8entry:
Chris Lattner0ece9a12010-05-31 17:27:17 +0000[diff] [blame^]9 tail call void @llvm.memcpy.p0i8.p0i8.i64( i8* %a, i8* %b, i64 %n, i32 1, i1 0 )
Rafael Espindola068317b2007-09-28 12:53:01 +0000[diff] [blame]10 ret i8* %a
Chris Lattner0ece9a12010-05-31 17:27:17 +0000[diff] [blame^]11
12; CHECK: test1:
13; CHECK: memcpy
Rafael Espindola068317b2007-09-28 12:53:01 +0000[diff] [blame]14}
15
Chris Lattner0ece9a12010-05-31 17:27:17 +0000[diff] [blame^]16; Variable memcpy's should lower to calls.
17define i8* @test2(i64* %a, i64* %b, i64 %n) nounwind {
Rafael Espindola068317b2007-09-28 12:53:01 +0000[diff] [blame]18entry:
19 %tmp14 = bitcast i64* %a to i8*
20 %tmp25 = bitcast i64* %b to i8*
Chris Lattner0ece9a12010-05-31 17:27:17 +0000[diff] [blame^]21 tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp14, i8* %tmp25, i64 %n, i32 8, i1 0 )
Rafael Espindola068317b2007-09-28 12:53:01 +0000[diff] [blame]22 ret i8* %tmp14
Chris Lattner0ece9a12010-05-31 17:27:17 +0000[diff] [blame^]23
24; CHECK: test2:
25; CHECK: memcpy
Rafael Espindola068317b2007-09-28 12:53:01 +0000[diff] [blame]26}
Chris Lattner0ece9a12010-05-31 17:27:17 +0000[diff] [blame^]27