1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -passes=memcpyopt -S -verify-memoryssa | FileCheck %s 3; These memmoves should get optimized to memcpys. 4 5target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128" 6target triple = "x86_64-apple-darwin9.0" 7 8@C = external constant [0 x i8] 9 10declare void @llvm.memmove.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) nounwind 11 12define ptr @test1(ptr nocapture %src) nounwind { 13; CHECK-LABEL: @test1( 14; CHECK-NEXT: entry: 15; CHECK-NEXT: [[MALLOCCALL:%.*]] = tail call ptr @malloc(i32 trunc (i64 mul nuw (i64 ptrtoint (ptr getelementptr (i8, ptr null, i32 1) to i64), i64 13) to i32)) 16; CHECK-NEXT: tail call void @llvm.memcpy.p0.p0.i64(ptr [[MALLOCCALL]], ptr [[SRC:%.*]], i64 13, i1 false) 17; CHECK-NEXT: ret ptr [[MALLOCCALL]] 18; 19entry: 20 21 %malloccall = tail call ptr @malloc(i32 trunc (i64 mul nuw (i64 ptrtoint (ptr getelementptr (i8, ptr null, i32 1) to i64), i64 13) to i32)) 22 tail call void @llvm.memmove.p0.p0.i64(ptr %malloccall, ptr %src, i64 13, i1 false) 23 ret ptr %malloccall 24} 25declare noalias ptr @malloc(i32) 26 27 28define void @test2(ptr %P) nounwind { 29; CHECK-LABEL: @test2( 30; CHECK-NEXT: entry: 31; CHECK-NEXT: [[ADD_PTR:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 16 32; CHECK-NEXT: tail call void @llvm.memcpy.p0.p0.i64(ptr [[P]], ptr [[ADD_PTR]], i64 16, i1 false) 33; CHECK-NEXT: ret void 34; 35entry: 36 %add.ptr = getelementptr i8, ptr %P, i64 16 37 tail call void @llvm.memmove.p0.p0.i64(ptr %P, ptr %add.ptr, i64 16, i1 false) 38 ret void 39} 40 41; This cannot be optimize because the src/dst really do overlap. 42define void @test3(ptr %P) nounwind { 43; CHECK-LABEL: @test3( 44; CHECK-NEXT: entry: 45; CHECK-NEXT: [[ADD_PTR:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 16 46; CHECK-NEXT: tail call void @llvm.memmove.p0.p0.i64(ptr [[P]], ptr [[ADD_PTR]], i64 17, i1 false) 47; CHECK-NEXT: ret void 48; 49entry: 50 %add.ptr = getelementptr i8, ptr %P, i64 16 51 tail call void @llvm.memmove.p0.p0.i64(ptr %P, ptr %add.ptr, i64 17, i1 false) 52 ret void 53} 54 55define void @test4(ptr %P) nounwind { 56; CHECK-LABEL: @test4( 57; CHECK-NEXT: tail call void @llvm.memcpy.p0.p0.i64(ptr [[P:%.*]], ptr @C, i64 17, i1 false) 58; CHECK-NEXT: ret void 59; 60 tail call void @llvm.memmove.p0.p0.i64(ptr %P, ptr @C, i64 17, i1 false) 61 ret void 62} 63