1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -instcombine -S < %s | FileCheck %s 3 4define i8* @memcpy_nonconst_n(i8* %d, i8* nocapture readonly %s, i64 %n) { 5; CHECK-LABEL: @memcpy_nonconst_n( 6; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 [[D:%.*]], i8* align 1 [[S:%.*]], i64 [[N:%.*]], i1 false) 7; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, i8* [[D]], i64 [[N]] 8; CHECK-NEXT: ret i8* [[TMP1]] 9; 10 %r = tail call i8* @mempcpy(i8* %d, i8* %s, i64 %n) 11 ret i8* %r 12} 13 14define i8* @memcpy_nonconst_n_copy_attrs(i8* %d, i8* nocapture readonly %s, i64 %n) { 15; CHECK-LABEL: @memcpy_nonconst_n_copy_attrs( 16; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 dereferenceable(16) [[D:%.*]], i8* align 1 [[S:%.*]], i64 [[N:%.*]], i1 false) 17; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, i8* [[D]], i64 [[N]] 18; CHECK-NEXT: ret i8* [[TMP1]] 19; 20 %r = tail call i8* @mempcpy(i8* dereferenceable(16) %d, i8* %s, i64 %n) 21 ret i8* %r 22} 23 24define void @memcpy_nonconst_n_unused_retval(i8* %d, i8* nocapture readonly %s, i64 %n) { 25; CHECK-LABEL: @memcpy_nonconst_n_unused_retval( 26; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 [[D:%.*]], i8* align 1 [[S:%.*]], i64 [[N:%.*]], i1 false) 27; CHECK-NEXT: ret void 28; 29 call i8* @mempcpy(i8* %d, i8* %s, i64 %n) 30 ret void 31} 32 33define i8* @memcpy_small_const_n(i8* %d, i8* nocapture readonly %s) { 34; CHECK-LABEL: @memcpy_small_const_n( 35; CHECK-NEXT: [[TMP1:%.*]] = bitcast i8* [[S:%.*]] to i64* 36; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8* [[D:%.*]] to i64* 37; CHECK-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 1 38; CHECK-NEXT: store i64 [[TMP3]], i64* [[TMP2]], align 1 39; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i8, i8* [[D]], i64 8 40; CHECK-NEXT: ret i8* [[TMP4]] 41; 42 %r = tail call i8* @mempcpy(i8* %d, i8* %s, i64 8) 43 ret i8* %r 44} 45 46define i8* @memcpy_big_const_n(i8* %d, i8* nocapture readonly %s) { 47; CHECK-LABEL: @memcpy_big_const_n( 48; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 1 dereferenceable(1024) [[D:%.*]], i8* nonnull align 1 dereferenceable(1024) [[S:%.*]], i64 1024, i1 false) 49; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, i8* [[D]], i64 1024 50; CHECK-NEXT: ret i8* [[TMP1]] 51; 52 %r = tail call i8* @mempcpy(i8* %d, i8* %s, i64 1024) 53 ret i8* %r 54} 55 56declare i8* @mempcpy(i8*, i8* nocapture readonly, i64) 57