| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3 |
| ; RUN: opt -verify-loop-info -irce-print-changed-loops -passes=irce -S < %s 2>&1 | FileCheck %s |
| ; RUN: opt -verify-loop-info -irce-print-changed-loops -passes='require<branch-prob>,irce' -S < %s 2>&1 | FileCheck %s |
| |
| ; CHECK: irce: in function test_01: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting> |
| ; CHECK: irce: in function test_02: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting> |
| |
| ; Iterate from 0 to SINT_MAX, check that the post-loop is generated. |
| define void @test_01(ptr %arr, ptr %a_len_ptr) { |
| ; CHECK-LABEL: define void @test_01 |
| ; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[EXIT_MAINLOOP_AT:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0:![0-9]+]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = icmp slt i32 0, [[EXIT_MAINLOOP_AT]] |
| ; CHECK-NEXT: br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]] |
| ; CHECK: loop.preheader: |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-NEXT: [[IDX_NEXT]] = add nsw i32 [[IDX]], 1 |
| ; CHECK-NEXT: [[ABC:%.*]] = icmp slt i32 [[IDX]], [[EXIT_MAINLOOP_AT]] |
| ; CHECK-NEXT: br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]] |
| ; CHECK: in.bounds: |
| ; CHECK-NEXT: [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]] |
| ; CHECK-NEXT: store i32 0, ptr [[ADDR]], align 4 |
| ; CHECK-NEXT: [[NEXT:%.*]] = icmp slt i32 [[IDX_NEXT]], 2147483647 |
| ; 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]] ] |
| ; CHECK-NEXT: [[TMP2:%.*]] = icmp slt i32 [[IDX_NEXT_LCSSA]], 2147483647 |
| ; CHECK-NEXT: br i1 [[TMP2]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT:%.*]] |
| ; CHECK: main.pseudo.exit: |
| ; CHECK-NEXT: [[IDX_COPY:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ] |
| ; CHECK-NEXT: [[INDVAR_END:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[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.loopexit1: |
| ; CHECK-NEXT: br label [[OUT_OF_BOUNDS]] |
| ; CHECK: out.of.bounds: |
| ; CHECK-NEXT: ret void |
| ; 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_COPY]], [[POSTLOOP]] ], [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_POSTLOOP:%.*]] ] |
| ; CHECK-NEXT: [[IDX_NEXT_POSTLOOP]] = add i32 [[IDX_POSTLOOP]], 1 |
| ; CHECK-NEXT: [[ABC_POSTLOOP:%.*]] = icmp slt i32 [[IDX_POSTLOOP]], [[EXIT_MAINLOOP_AT]] |
| ; CHECK-NEXT: br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]] |
| ; CHECK: in.bounds.postloop: |
| ; CHECK-NEXT: [[ADDR_POSTLOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_POSTLOOP]] |
| ; CHECK-NEXT: store i32 0, ptr [[ADDR_POSTLOOP]], align 4 |
| ; CHECK-NEXT: [[NEXT_POSTLOOP:%.*]] = icmp slt i32 [[IDX_NEXT_POSTLOOP]], 2147483647 |
| ; CHECK-NEXT: br i1 [[NEXT_POSTLOOP]], label [[LOOP_POSTLOOP]], label [[EXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP1:![0-9]+]], !irce.loop.clone [[META6:![0-9]+]] |
| ; |
| |
| entry: |
| %len = load i32, ptr %a_len_ptr, !range !0 |
| br label %loop |
| |
| loop: |
| %idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ] |
| %idx.next = add i32 %idx, 1 |
| %abc = icmp slt i32 %idx, %len |
| br i1 %abc, label %in.bounds, label %out.of.bounds |
| |
| in.bounds: |
| %addr = getelementptr i32, ptr %arr, i32 %idx |
| store i32 0, ptr %addr |
| %next = icmp slt i32 %idx.next, 2147483647 |
| br i1 %next, label %loop, label %exit |
| |
| out.of.bounds: |
| ret void |
| |
| exit: |
| ret void |
| } |
| |
| ; Iterate from SINT_MAX to 0, check that the pre-loop is generated. |
| define void @test_02(ptr %arr, ptr %a_len_ptr) { |
| ; CHECK-LABEL: define void @test_02 |
| ; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[LEN:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]] |
| ; CHECK-NEXT: br i1 true, label [[LOOP_PRELOOP_PREHEADER:%.*]], label [[PRELOOP_PSEUDO_EXIT:%.*]] |
| ; CHECK: loop.preloop.preheader: |
| ; CHECK-NEXT: br label [[LOOP_PRELOOP:%.*]] |
| ; CHECK: mainloop: |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_PRELOOP_COPY:%.*]], [[MAINLOOP:%.*]] ], [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ] |
| ; CHECK-NEXT: [[IDX_NEXT]] = add nsw i32 [[IDX]], -1 |
| ; CHECK-NEXT: [[ABC:%.*]] = icmp slt i32 [[IDX]], [[LEN]] |
| ; CHECK-NEXT: br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]] |
| ; CHECK: in.bounds: |
| ; CHECK-NEXT: [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]] |
| ; CHECK-NEXT: store i32 0, ptr [[ADDR]], align 4 |
| ; CHECK-NEXT: [[NEXT:%.*]] = icmp sgt i32 [[IDX_NEXT]], -1 |
| ; CHECK-NEXT: br i1 [[NEXT]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]] |
| ; CHECK: out.of.bounds.loopexit: |
| ; CHECK-NEXT: br label [[OUT_OF_BOUNDS:%.*]] |
| ; CHECK: out.of.bounds.loopexit1: |
| ; CHECK-NEXT: br label [[OUT_OF_BOUNDS]] |
| ; CHECK: out.of.bounds: |
| ; CHECK-NEXT: ret void |
| ; CHECK: exit.loopexit: |
| ; CHECK-NEXT: br label [[EXIT:%.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; CHECK: loop.preloop: |
| ; CHECK-NEXT: [[IDX_PRELOOP:%.*]] = phi i32 [ [[IDX_NEXT_PRELOOP:%.*]], [[IN_BOUNDS_PRELOOP:%.*]] ], [ 2147483647, [[LOOP_PRELOOP_PREHEADER]] ] |
| ; CHECK-NEXT: [[IDX_NEXT_PRELOOP]] = add i32 [[IDX_PRELOOP]], -1 |
| ; CHECK-NEXT: [[ABC_PRELOOP:%.*]] = icmp slt i32 [[IDX_PRELOOP]], [[LEN]] |
| ; CHECK-NEXT: br i1 [[ABC_PRELOOP]], label [[IN_BOUNDS_PRELOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]] |
| ; CHECK: in.bounds.preloop: |
| ; CHECK-NEXT: [[ADDR_PRELOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_PRELOOP]] |
| ; CHECK-NEXT: store i32 0, ptr [[ADDR_PRELOOP]], align 4 |
| ; CHECK-NEXT: [[NEXT_PRELOOP:%.*]] = icmp sgt i32 [[IDX_NEXT_PRELOOP]], -1 |
| ; CHECK-NEXT: [[TMP0:%.*]] = icmp sgt i32 [[IDX_NEXT_PRELOOP]], -1 |
| ; CHECK-NEXT: br i1 [[TMP0]], label [[LOOP_PRELOOP]], label [[PRELOOP_EXIT_SELECTOR:%.*]], !llvm.loop [[LOOP7:![0-9]+]], !irce.loop.clone [[META6]] |
| ; CHECK: preloop.exit.selector: |
| ; CHECK-NEXT: [[IDX_NEXT_PRELOOP_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT_PRELOOP]], [[IN_BOUNDS_PRELOOP]] ] |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 [[IDX_NEXT_PRELOOP_LCSSA]], -1 |
| ; CHECK-NEXT: br i1 [[TMP1]], label [[PRELOOP_PSEUDO_EXIT]], label [[EXIT]] |
| ; CHECK: preloop.pseudo.exit: |
| ; CHECK-NEXT: [[IDX_PRELOOP_COPY]] = phi i32 [ 2147483647, [[ENTRY:%.*]] ], [ [[IDX_NEXT_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ] |
| ; CHECK-NEXT: [[INDVAR_END:%.*]] = phi i32 [ 2147483647, [[ENTRY]] ], [ [[IDX_NEXT_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ] |
| ; CHECK-NEXT: br label [[MAINLOOP]] |
| ; |
| |
| entry: |
| %len = load i32, ptr %a_len_ptr, !range !0 |
| br label %loop |
| |
| loop: |
| %idx = phi i32 [ 2147483647, %entry ], [ %idx.next, %in.bounds ] |
| %idx.next = add i32 %idx, -1 |
| %abc = icmp slt i32 %idx, %len |
| br i1 %abc, label %in.bounds, label %out.of.bounds |
| |
| in.bounds: |
| %addr = getelementptr i32, ptr %arr, i32 %idx |
| store i32 0, ptr %addr |
| %next = icmp sgt i32 %idx.next, -1 |
| br i1 %next, label %loop, label %exit |
| |
| out.of.bounds: |
| ret void |
| |
| exit: |
| ret void |
| } |
| |
| !0 = !{i32 0, i32 50} |
| ;. |
| ; CHECK: [[RNG0]] = !{i32 0, i32 50} |
| ; CHECK: [[LOOP1]] = distinct !{[[LOOP1]], [[META2:![0-9]+]], [[META3:![0-9]+]], [[META4:![0-9]+]], [[META5:![0-9]+]]} |
| ; CHECK: [[META2]] = !{!"llvm.loop.unroll.disable"} |
| ; CHECK: [[META3]] = !{!"llvm.loop.vectorize.enable", i1 false} |
| ; CHECK: [[META4]] = !{!"llvm.loop.licm_versioning.disable"} |
| ; CHECK: [[META5]] = !{!"llvm.loop.distribute.enable", i1 false} |
| ; CHECK: [[META6]] = !{} |
| ; CHECK: [[LOOP7]] = distinct !{[[LOOP7]], [[META2]], [[META3]], [[META4]], [[META5]]} |
| ;. |