| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -instcombine -S < %s | FileCheck %s |
| |
| define i8* @memcpy_nonconst_n(i8* %d, i8* nocapture readonly %s, i64 %n) { |
| ; CHECK-LABEL: @memcpy_nonconst_n( |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 [[D:%.*]], i8* align 1 [[S:%.*]], i64 [[N:%.*]], i1 false) |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, i8* [[D]], i64 [[N]] |
| ; CHECK-NEXT: ret i8* [[TMP1]] |
| ; |
| %r = tail call i8* @mempcpy(i8* %d, i8* %s, i64 %n) |
| ret i8* %r |
| } |
| |
| define i8* @memcpy_nonconst_n_copy_attrs(i8* %d, i8* nocapture readonly %s, i64 %n) { |
| ; CHECK-LABEL: @memcpy_nonconst_n_copy_attrs( |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 dereferenceable(16) [[D:%.*]], i8* align 1 [[S:%.*]], i64 [[N:%.*]], i1 false) |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, i8* [[D]], i64 [[N]] |
| ; CHECK-NEXT: ret i8* [[TMP1]] |
| ; |
| %r = tail call i8* @mempcpy(i8* dereferenceable(16) %d, i8* %s, i64 %n) |
| ret i8* %r |
| } |
| |
| define void @memcpy_nonconst_n_unused_retval(i8* %d, i8* nocapture readonly %s, i64 %n) { |
| ; CHECK-LABEL: @memcpy_nonconst_n_unused_retval( |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 [[D:%.*]], i8* align 1 [[S:%.*]], i64 [[N:%.*]], i1 false) |
| ; CHECK-NEXT: ret void |
| ; |
| call i8* @mempcpy(i8* %d, i8* %s, i64 %n) |
| ret void |
| } |
| |
| define i8* @memcpy_small_const_n(i8* %d, i8* nocapture readonly %s) { |
| ; CHECK-LABEL: @memcpy_small_const_n( |
| ; CHECK-NEXT: [[TMP1:%.*]] = bitcast i8* [[S:%.*]] to i64* |
| ; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8* [[D:%.*]] to i64* |
| ; CHECK-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 1 |
| ; CHECK-NEXT: store i64 [[TMP3]], i64* [[TMP2]], align 1 |
| ; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i8, i8* [[D]], i64 8 |
| ; CHECK-NEXT: ret i8* [[TMP4]] |
| ; |
| %r = tail call i8* @mempcpy(i8* %d, i8* %s, i64 8) |
| ret i8* %r |
| } |
| |
| define i8* @memcpy_big_const_n(i8* %d, i8* nocapture readonly %s) { |
| ; CHECK-LABEL: @memcpy_big_const_n( |
| ; 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) |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, i8* [[D]], i64 1024 |
| ; CHECK-NEXT: ret i8* [[TMP1]] |
| ; |
| %r = tail call i8* @mempcpy(i8* %d, i8* %s, i64 1024) |
| ret i8* %r |
| } |
| |
| declare i8* @mempcpy(i8*, i8* nocapture readonly, i64) |