| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -verify-loop-info -passes=irce -S < %s | FileCheck %s |
| ; RUN: opt -verify-loop-info -passes='require<branch-prob>,irce' -S < %s | FileCheck %s |
| |
| define void @multiple_access_no_preloop( |
| ; CHECK-LABEL: @multiple_access_no_preloop( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[LEN_A:%.*]] = load i32, ptr [[A_LEN_PTR:%.*]], align 4, !range [[RNG0:![0-9]+]] |
| ; CHECK-NEXT: [[LEN_B:%.*]] = load i32, ptr [[B_LEN_PTR:%.*]], align 4, !range [[RNG0]] |
| ; CHECK-NEXT: [[FIRST_ITR_CHECK:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[FIRST_ITR_CHECK]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]] |
| ; CHECK: loop.preheader: |
| ; CHECK-NEXT: [[SMIN:%.*]] = call i32 @llvm.smin.i32(i32 [[LEN_B]], i32 [[LEN_A]]) |
| ; CHECK-NEXT: [[SMIN1:%.*]] = call i32 @llvm.smin.i32(i32 [[SMIN]], i32 [[N]]) |
| ; CHECK-NEXT: [[EXIT_MAINLOOP_AT:%.*]] = call i32 @llvm.smax.i32(i32 [[SMIN1]], i32 0) |
| ; CHECK-NEXT: [[TMP0:%.*]] = icmp slt i32 0, [[EXIT_MAINLOOP_AT]] |
| ; CHECK-NEXT: br i1 [[TMP0]], label [[LOOP_PREHEADER2:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]] |
| ; CHECK: loop.preheader2: |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS_B:%.*]] ], [ 0, [[LOOP_PREHEADER2]] ] |
| ; CHECK-NEXT: [[IDX_NEXT]] = add nsw i32 [[IDX]], 1 |
| ; CHECK-NEXT: [[ABC_A:%.*]] = icmp slt i32 [[IDX]], [[LEN_A]] |
| ; CHECK-NEXT: br i1 true, label [[IN_BOUNDS_A:%.*]], label [[OUT_OF_BOUNDS_LOOPEXIT3:%.*]], !prof [[PROF1:![0-9]+]] |
| ; CHECK: in.bounds.a: |
| ; CHECK-NEXT: [[ADDR_A:%.*]] = getelementptr i32, ptr [[ARR_A:%.*]], i32 [[IDX]] |
| ; CHECK-NEXT: store i32 0, ptr [[ADDR_A]], align 4 |
| ; CHECK-NEXT: [[ABC_B:%.*]] = icmp slt i32 [[IDX]], [[LEN_B]] |
| ; CHECK-NEXT: br i1 true, label [[IN_BOUNDS_B]], label [[OUT_OF_BOUNDS_LOOPEXIT3]], !prof [[PROF1]] |
| ; CHECK: in.bounds.b: |
| ; CHECK-NEXT: [[ADDR_B:%.*]] = getelementptr i32, ptr [[ARR_B:%.*]], i32 [[IDX]] |
| ; CHECK-NEXT: store i32 -1, ptr [[ADDR_B]], align 4 |
| ; CHECK-NEXT: [[NEXT:%.*]] = icmp slt i32 [[IDX_NEXT]], [[N]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]] |
| ; CHECK-NEXT: br i1 [[TMP1]], label [[LOOP]], label [[MAIN_EXIT_SELECTOR:%.*]] |
| ; CHECK: main.exit.selector: |
| ; CHECK-NEXT: [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS_B]] ] |
| ; CHECK-NEXT: [[TMP2:%.*]] = icmp slt i32 [[IDX_NEXT_LCSSA]], [[N]] |
| ; CHECK-NEXT: br i1 [[TMP2]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT_LOOPEXIT:%.*]] |
| ; CHECK: main.pseudo.exit: |
| ; CHECK-NEXT: [[IDX_COPY:%.*]] = phi i32 [ 0, [[LOOP_PREHEADER]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ] |
| ; CHECK-NEXT: [[INDVAR_END:%.*]] = phi i32 [ 0, [[LOOP_PREHEADER]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ] |
| ; CHECK-NEXT: br label [[POSTLOOP:%.*]] |
| ; CHECK: out.of.bounds.loopexit: |
| ; CHECK-NEXT: br label [[OUT_OF_BOUNDS:%.*]] |
| ; CHECK: out.of.bounds.loopexit3: |
| ; CHECK-NEXT: br label [[OUT_OF_BOUNDS]] |
| ; CHECK: out.of.bounds: |
| ; CHECK-NEXT: ret void |
| ; CHECK: exit.loopexit.loopexit: |
| ; CHECK-NEXT: br label [[EXIT_LOOPEXIT]] |
| ; CHECK: exit.loopexit: |
| ; CHECK-NEXT: br label [[EXIT]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; CHECK: postloop: |
| ; CHECK-NEXT: br label [[LOOP_POSTLOOP:%.*]] |
| ; CHECK: loop.postloop: |
| ; CHECK-NEXT: [[IDX_POSTLOOP:%.*]] = phi i32 [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_B_POSTLOOP:%.*]] ], [ [[IDX_COPY]], [[POSTLOOP]] ] |
| ; CHECK-NEXT: [[IDX_NEXT_POSTLOOP]] = add i32 [[IDX_POSTLOOP]], 1 |
| ; CHECK-NEXT: [[ABC_A_POSTLOOP:%.*]] = icmp slt i32 [[IDX_POSTLOOP]], [[LEN_A]] |
| ; CHECK-NEXT: br i1 [[ABC_A_POSTLOOP]], label [[IN_BOUNDS_A_POSTLOOP:%.*]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]], !prof [[PROF1]] |
| ; CHECK: in.bounds.a.postloop: |
| ; CHECK-NEXT: [[ADDR_A_POSTLOOP:%.*]] = getelementptr i32, ptr [[ARR_A]], i32 [[IDX_POSTLOOP]] |
| ; CHECK-NEXT: store i32 0, ptr [[ADDR_A_POSTLOOP]], align 4 |
| ; CHECK-NEXT: [[ABC_B_POSTLOOP:%.*]] = icmp slt i32 [[IDX_POSTLOOP]], [[LEN_B]] |
| ; CHECK-NEXT: br i1 [[ABC_B_POSTLOOP]], label [[IN_BOUNDS_B_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT]], !prof [[PROF1]] |
| ; CHECK: in.bounds.b.postloop: |
| ; CHECK-NEXT: [[ADDR_B_POSTLOOP:%.*]] = getelementptr i32, ptr [[ARR_B]], i32 [[IDX_POSTLOOP]] |
| ; CHECK-NEXT: store i32 -1, ptr [[ADDR_B_POSTLOOP]], align 4 |
| ; CHECK-NEXT: [[NEXT_POSTLOOP:%.*]] = icmp slt i32 [[IDX_NEXT_POSTLOOP]], [[N]] |
| ; CHECK-NEXT: br i1 [[NEXT_POSTLOOP]], label [[LOOP_POSTLOOP]], label [[EXIT_LOOPEXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP2:![0-9]+]], !irce.loop.clone [[META7:![0-9]+]] |
| ; |
| ptr %arr_a, ptr %a_len_ptr, ptr %arr_b, ptr %b_len_ptr, i32 %n) { |
| |
| entry: |
| %len.a = load i32, ptr %a_len_ptr, !range !0 |
| %len.b = load i32, ptr %b_len_ptr, !range !0 |
| %first.itr.check = icmp sgt i32 %n, 0 |
| br i1 %first.itr.check, label %loop, label %exit |
| |
| loop: |
| %idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds.b ] |
| %idx.next = add i32 %idx, 1 |
| %abc.a = icmp slt i32 %idx, %len.a |
| br i1 %abc.a, label %in.bounds.a, label %out.of.bounds, !prof !1 |
| |
| in.bounds.a: |
| %addr.a = getelementptr i32, ptr %arr_a, i32 %idx |
| store i32 0, ptr %addr.a |
| %abc.b = icmp slt i32 %idx, %len.b |
| br i1 %abc.b, label %in.bounds.b, label %out.of.bounds, !prof !1 |
| |
| in.bounds.b: |
| %addr.b = getelementptr i32, ptr %arr_b, i32 %idx |
| store i32 -1, ptr %addr.b |
| %next = icmp slt i32 %idx.next, %n |
| br i1 %next, label %loop, label %exit |
| |
| out.of.bounds: |
| ret void |
| |
| exit: |
| ret void |
| } |
| |
| !0 = !{i32 0, i32 2147483647} |
| !1 = !{!"branch_weights", i32 128, i32 4} |