| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -instcombine -S < %s | FileCheck %s |
| |
| declare i32 @memcmp(i8* nocapture, i8* nocapture, i64) |
| declare i8* @memcpy(i8* nocapture, i8* nocapture, i64) |
| declare i8* @memmove(i8* nocapture, i8* nocapture, i64) |
| declare i8* @memset(i8* nocapture, i8, i64) |
| declare i8* @memchr(i8* nocapture, i32, i64) |
| declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) |
| declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) |
| declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1) |
| |
| define i32 @memcmp_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) { |
| ; CHECK-LABEL: @memcmp_const_size_set_deref( |
| ; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* nonnull dereferenceable(16) [[D:%.*]], i8* nonnull dereferenceable(16) [[S:%.*]], i64 16) |
| ; CHECK-NEXT: ret i32 [[CALL]] |
| ; |
| %call = tail call i32 @memcmp(i8* %d, i8* %s, i64 16) |
| ret i32 %call |
| } |
| |
| define i32 @memcmp_const_size_update_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) { |
| ; CHECK-LABEL: @memcmp_const_size_update_deref( |
| ; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* nonnull dereferenceable(16) [[D:%.*]], i8* nonnull dereferenceable(16) [[S:%.*]], i64 16) |
| ; CHECK-NEXT: ret i32 [[CALL]] |
| ; |
| %call = tail call i32 @memcmp(i8* dereferenceable(4) %d, i8* dereferenceable(8) %s, i64 16) |
| ret i32 %call |
| } |
| |
| define i32 @memcmp_const_size_update_deref2(i8* nocapture readonly %d, i8* nocapture readonly %s) { |
| ; CHECK-LABEL: @memcmp_const_size_update_deref2( |
| ; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* nonnull dereferenceable(16) [[D:%.*]], i8* nonnull dereferenceable(16) [[S:%.*]], i64 16) |
| ; CHECK-NEXT: ret i32 [[CALL]] |
| ; |
| %call = tail call i32 @memcmp(i8* %d, i8* dereferenceable_or_null(8) %s, i64 16) |
| ret i32 %call |
| } |
| |
| define i32 @memcmp_const_size_update_deref3(i8* nocapture readonly %d, i8* nocapture readonly %s) { |
| ; CHECK-LABEL: @memcmp_const_size_update_deref3( |
| ; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* nonnull dereferenceable(40) [[D:%.*]], i8* nonnull dereferenceable(16) [[S:%.*]], i64 16) |
| ; CHECK-NEXT: ret i32 [[CALL]] |
| ; |
| %call = tail call i32 @memcmp(i8* dereferenceable(40) %d, i8* %s, i64 16) |
| ret i32 %call |
| } |
| |
| define i32 @memcmp_const_size_update_deref4(i8* nocapture readonly %d, i8* nocapture readonly %s) { |
| ; CHECK-LABEL: @memcmp_const_size_update_deref4( |
| ; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* nonnull dereferenceable(16) [[D:%.*]], i8* nonnull dereferenceable(16) [[S:%.*]], i64 16) |
| ; CHECK-NEXT: ret i32 [[CALL]] |
| ; |
| %call = tail call i32 @memcmp(i8* dereferenceable_or_null(16) %d, i8* %s, i64 16) |
| ret i32 %call |
| } |
| |
| define i32 @memcmp_const_size_update_deref5(i8* nocapture readonly %d, i8* nocapture readonly %s) { |
| ; CHECK-LABEL: @memcmp_const_size_update_deref5( |
| ; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* nonnull dereferenceable(40) [[D:%.*]], i8* nonnull dereferenceable(16) [[S:%.*]], i64 16) |
| ; CHECK-NEXT: ret i32 [[CALL]] |
| ; |
| %call = tail call i32 @memcmp(i8* dereferenceable_or_null(40) %d, i8* %s, i64 16) |
| ret i32 %call |
| } |
| |
| define i32 @memcmp_const_size_update_deref6(i8* nocapture readonly %d, i8* nocapture readonly %s) null_pointer_is_valid { |
| ; CHECK-LABEL: @memcmp_const_size_update_deref6( |
| ; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(16) dereferenceable_or_null(40) [[D:%.*]], i8* dereferenceable(16) [[S:%.*]], i64 16) |
| ; CHECK-NEXT: ret i32 [[CALL]] |
| ; |
| %call = tail call i32 @memcmp(i8* dereferenceable_or_null(40) %d, i8* %s, i64 16) |
| ret i32 %call |
| } |
| |
| define i32 @memcmp_const_size_update_deref7(i8* nocapture readonly %d, i8* nocapture readonly %s) null_pointer_is_valid { |
| ; CHECK-LABEL: @memcmp_const_size_update_deref7( |
| ; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* nonnull dereferenceable(40) [[D:%.*]], i8* dereferenceable(16) [[S:%.*]], i64 16) |
| ; CHECK-NEXT: ret i32 [[CALL]] |
| ; |
| %call = tail call i32 @memcmp(i8* nonnull dereferenceable_or_null(40) %d, i8* %s, i64 16) |
| ret i32 %call |
| } |
| |
| define i32 @memcmp_const_size_no_update_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) { |
| ; CHECK-LABEL: @memcmp_const_size_no_update_deref( |
| ; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* nonnull dereferenceable(40) [[D:%.*]], i8* nonnull dereferenceable(20) [[S:%.*]], i64 16) |
| ; CHECK-NEXT: ret i32 [[CALL]] |
| ; |
| %call = tail call i32 @memcmp(i8* dereferenceable(40) %d, i8* dereferenceable(20) %s, i64 16) |
| ret i32 %call |
| } |
| |
| define i32 @memcmp_nonconst_size(i8* nocapture readonly %d, i8* nocapture readonly %s, i64 %n) { |
| ; CHECK-LABEL: @memcmp_nonconst_size( |
| ; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* [[D:%.*]], i8* [[S:%.*]], i64 [[N:%.*]]) |
| ; CHECK-NEXT: ret i32 [[CALL]] |
| ; |
| %call = tail call i32 @memcmp(i8* %d, i8* %s, i64 %n) |
| ret i32 %call |
| } |
| |
| define i8* @memcpy_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) { |
| ; CHECK-LABEL: @memcpy_const_size_set_deref( |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 1 dereferenceable(64) [[D:%.*]], i8* nonnull align 1 dereferenceable(64) [[S:%.*]], i64 64, i1 false) |
| ; CHECK-NEXT: ret i8* [[D]] |
| ; |
| %call = tail call i8* @memcpy(i8* %d, i8* %s, i64 64) |
| ret i8* %call |
| } |
| |
| define i8* @memmove_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) { |
| ; CHECK-LABEL: @memmove_const_size_set_deref( |
| ; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i64(i8* nonnull align 1 dereferenceable(64) [[D:%.*]], i8* nonnull align 1 dereferenceable(64) [[S:%.*]], i64 64, i1 false) |
| ; CHECK-NEXT: ret i8* [[D]] |
| ; |
| %call = tail call i8* @memmove(i8* %d, i8* %s, i64 64) |
| ret i8* %call |
| } |
| |
| define i8* @memset_const_size_set_deref(i8* nocapture readonly %s, i8 %c) { |
| ; CHECK-LABEL: @memset_const_size_set_deref( |
| ; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* nonnull align 1 dereferenceable(64) [[S:%.*]], i8 [[C:%.*]], i64 64, i1 false) |
| ; CHECK-NEXT: ret i8* [[S]] |
| ; |
| %call = tail call i8* @memset(i8* %s, i8 %c, i64 64) |
| ret i8* %call |
| } |
| |
| define i8* @memchr_const_size_set_deref(i8* nocapture readonly %s, i32 %c) { |
| ; CHECK-LABEL: @memchr_const_size_set_deref( |
| ; CHECK-NEXT: [[CALL:%.*]] = tail call i8* @memchr(i8* nonnull dereferenceable(64) [[S:%.*]], i32 [[C:%.*]], i64 64) |
| ; CHECK-NEXT: ret i8* [[CALL]] |
| ; |
| %call = tail call i8* @memchr(i8* %s, i32 %c, i64 64) |
| ret i8* %call |
| } |
| |
| define i8* @llvm_memcpy_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) { |
| ; CHECK-LABEL: @llvm_memcpy_const_size_set_deref( |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 1 dereferenceable(16) [[D:%.*]], i8* nonnull align 1 dereferenceable(16) [[S:%.*]], i64 16, i1 false) |
| ; CHECK-NEXT: ret i8* [[D]] |
| ; |
| call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 %d, i8* align 1 %s, i64 16, i1 false) |
| ret i8* %d |
| } |
| |
| define i8* @llvm_memmove_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) { |
| ; CHECK-LABEL: @llvm_memmove_const_size_set_deref( |
| ; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i64(i8* nonnull align 1 dereferenceable(16) [[D:%.*]], i8* nonnull align 1 dereferenceable(16) [[S:%.*]], i64 16, i1 false) |
| ; CHECK-NEXT: ret i8* [[D]] |
| ; |
| call void @llvm.memmove.p0i8.p0i8.i64(i8* align 1 %d, i8* align 1 %s, i64 16, i1 false) |
| ret i8* %d |
| } |
| define i8* @llvm_memset_const_size_set_deref(i8* nocapture readonly %s, i8 %c) { |
| ; CHECK-LABEL: @llvm_memset_const_size_set_deref( |
| ; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* nonnull align 1 dereferenceable(16) [[S:%.*]], i8 [[C:%.*]], i64 16, i1 false) |
| ; CHECK-NEXT: ret i8* [[S]] |
| ; |
| call void @llvm.memset.p0i8.i64(i8* align 1 %s, i8 %c, i64 16, i1 false) |
| ret i8* %s |
| } |