Autogen tests for ease of future update

llvm · Nov 5, 2021 · e69f647 · e69f647
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diff --git a/llvm/test/Transforms/IRCE/conjunctive-checks.ll b/llvm/test/Transforms/IRCE/conjunctive-checks.ll
@@ -1,25 +1,77 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt -S -verify-loop-info -irce < %s | FileCheck %s
 ; RUN: opt -S -verify-loop-info -passes='require<branch-prob>,irce' < %s | FileCheck %s
 
 define void @f_0(i32 *%arr, i32 *%a_len_ptr, i32 %n, i1* %cond_buf) {
 ; CHECK-LABEL: @f_0(
-
-; CHECK: loop.preheader:
-; CHECK: [[len_sub:[^ ]+]] = add nsw i32 %len, -4
-; CHECK: [[exit_main_loop_at_hiclamp:[^ ]+]] = call i32 @llvm.smin.i32(i32 %n, i32 [[len_sub]])
-; CHECK: [[exit_main_loop_at_loclamp:[^ ]+]] = call i32 @llvm.smax.i32(i32 [[exit_main_loop_at_hiclamp]], i32 0)
-; CHECK: [[enter_main_loop:[^ ]+]] = icmp slt i32 0, [[exit_main_loop_at_loclamp]]
-; CHECK: br i1 [[enter_main_loop]], label %[[loop_preheader2:[^ ,]+]], label %main.pseudo.exit
-
-; CHECK: [[loop_preheader2]]:
-; CHECK: br label %loop
-
- entry:
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[LEN:%.*]] = load i32, i32* [[A_LEN_PTR:%.*]], align 4, !range [[RNG0:![0-9]+]]
+; 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:    [[TMP0:%.*]] = add nsw i32 [[LEN]], -4
+; CHECK-NEXT:    [[SMIN:%.*]] = call i32 @llvm.smin.i32(i32 [[N]], i32 [[TMP0]])
+; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = call i32 @llvm.smax.i32(i32 [[SMIN]], i32 0)
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp slt i32 0, [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP1]], label [[LOOP_PREHEADER1:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preheader1:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER1]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add i32 [[IDX]], 1
+; CHECK-NEXT:    [[IDX_FOR_ABC:%.*]] = add i32 [[IDX]], 4
+; CHECK-NEXT:    [[ABC_ACTUAL:%.*]] = icmp slt i32 [[IDX_FOR_ABC]], [[LEN]]
+; CHECK-NEXT:    [[COND:%.*]] = load volatile i1, i1* [[COND_BUF:%.*]], align 1
+; CHECK-NEXT:    [[ABC:%.*]] = and i1 [[COND]], true
+; CHECK-NEXT:    br i1 [[ABC]], label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT2:%.*]], !prof [[PROF1:![0-9]+]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, i32* [[ARR:%.*]], i32 [[IDX_FOR_ABC]]
+; CHECK-NEXT:    store i32 0, i32* [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp slt i32 [[IDX_NEXT]], [[N]]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp slt i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP2]], label [[LOOP]], label [[MAIN_EXIT_SELECTOR:%.*]]
+; CHECK:       main.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS]] ]
+; CHECK-NEXT:    [[TMP3:%.*]] = icmp slt i32 [[IDX_NEXT_LCSSA]], [[N]]
+; CHECK-NEXT:    br i1 [[TMP3]], 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.loopexit2:
+; 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_POSTLOOP:%.*]] ], [ [[IDX_COPY]], [[POSTLOOP]] ]
+; CHECK-NEXT:    [[IDX_NEXT_POSTLOOP]] = add i32 [[IDX_POSTLOOP]], 1
+; CHECK-NEXT:    [[IDX_FOR_ABC_POSTLOOP:%.*]] = add i32 [[IDX_POSTLOOP]], 4
+; CHECK-NEXT:    [[ABC_ACTUAL_POSTLOOP:%.*]] = icmp slt i32 [[IDX_FOR_ABC_POSTLOOP]], [[LEN]]
+; CHECK-NEXT:    [[COND_POSTLOOP:%.*]] = load volatile i1, i1* [[COND_BUF]], align 1
+; CHECK-NEXT:    [[ABC_POSTLOOP:%.*]] = and i1 [[COND_POSTLOOP]], [[ABC_ACTUAL_POSTLOOP]]
+; CHECK-NEXT:    br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]], !prof [[PROF1]]
+; CHECK:       in.bounds.postloop:
+; CHECK-NEXT:    [[ADDR_POSTLOOP:%.*]] = getelementptr i32, i32* [[ARR]], i32 [[IDX_FOR_ABC_POSTLOOP]]
+; CHECK-NEXT:    store i32 0, i32* [[ADDR_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 !7
+;
+entry:
   %len = load i32, i32* %a_len_ptr, !range !0
   %first.itr.check = icmp sgt i32 %n, 0
   br i1 %first.itr.check, label %loop, label %exit
 
- loop:
+loop:
   %idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
   %idx.next = add i32 %idx, 1
   %idx.for.abc = add i32 %idx, 4
@@ -28,70 +80,115 @@ define void @f_0(i32 *%arr, i32 *%a_len_ptr, i32 %n, i1* %cond_buf) {
   %abc = and i1 %cond, %abc.actual
   br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1
 
-; CHECK: loop:
-; CHECK:  %cond = load volatile i1, i1* %cond_buf
-; CHECK:  %abc = and i1 %cond, true
-; CHECK:  br i1 %abc, label %in.bounds, label %[[loop_exit:[^ ,]+]], !prof !1
-
-; CHECK: [[loop_exit]]:
-; CHECK:  br label %out.of.bounds
-
- in.bounds:
+in.bounds:
   %addr = getelementptr i32, i32* %arr, i32 %idx.for.abc
   store i32 0, i32* %addr
   %next = icmp slt i32 %idx.next, %n
   br i1 %next, label %loop, label %exit
 
- out.of.bounds:
+out.of.bounds:
   ret void
 
- exit:
+exit:
   ret void
 }
 
 define void @f_1(
-    i32* %arr_a, i32* %a_len_ptr, i32* %arr_b, i32* %b_len_ptr, i32 %n) {
 ; CHECK-LABEL: @f_1(
-
-; CHECK: loop.preheader:
-; CHECK: [[smax_len:[^ ]+]] = call i32 @llvm.smin.i32(i32 %len.b, i32 %len.a)
-; CHECK: [[upper_limit_loclamp:[^ ]+]] = call i32 @llvm.smin.i32(i32 [[smax_len]], i32 %n)
-; CHECK: [[upper_limit:[^ ]+]] = call i32 @llvm.smax.i32(i32 [[upper_limit_loclamp]], i32 0)
-
- entry:
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[LEN_A:%.*]] = load i32, i32* [[A_LEN_PTR:%.*]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    [[LEN_B:%.*]] = load i32, i32* [[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:%.*]] ], [ 0, [[LOOP_PREHEADER2]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add i32 [[IDX]], 1
+; CHECK-NEXT:    [[ABC_A:%.*]] = icmp slt i32 [[IDX]], [[LEN_A]]
+; CHECK-NEXT:    [[ABC_B:%.*]] = icmp slt i32 [[IDX]], [[LEN_B]]
+; CHECK-NEXT:    [[ABC:%.*]] = and i1 true, true
+; CHECK-NEXT:    br i1 [[ABC]], label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT3:%.*]], !prof [[PROF1]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR_A:%.*]] = getelementptr i32, i32* [[ARR_A:%.*]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, i32* [[ADDR_A]], align 4
+; CHECK-NEXT:    [[ADDR_B:%.*]] = getelementptr i32, i32* [[ARR_B:%.*]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 -1, i32* [[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]] ]
+; 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_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:    [[ABC_B_POSTLOOP:%.*]] = icmp slt i32 [[IDX_POSTLOOP]], [[LEN_B]]
+; CHECK-NEXT:    [[ABC_POSTLOOP:%.*]] = and i1 [[ABC_A_POSTLOOP]], [[ABC_B_POSTLOOP]]
+; CHECK-NEXT:    br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]], !prof [[PROF1]]
+; CHECK:       in.bounds.postloop:
+; CHECK-NEXT:    [[ADDR_A_POSTLOOP:%.*]] = getelementptr i32, i32* [[ARR_A]], i32 [[IDX_POSTLOOP]]
+; CHECK-NEXT:    store i32 0, i32* [[ADDR_A_POSTLOOP]], align 4
+; CHECK-NEXT:    [[ADDR_B_POSTLOOP:%.*]] = getelementptr i32, i32* [[ARR_B]], i32 [[IDX_POSTLOOP]]
+; CHECK-NEXT:    store i32 -1, i32* [[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 [[LOOP8:![0-9]+]], !irce.loop.clone !7
+;
+  i32* %arr_a, i32* %a_len_ptr, i32* %arr_b, i32* %b_len_ptr, i32 %n) {
+
+
+entry:
   %len.a = load i32, i32* %a_len_ptr, !range !0
   %len.b = load i32, i32* %b_len_ptr, !range !0
   %first.itr.check = icmp sgt i32 %n, 0
   br i1 %first.itr.check, label %loop, label %exit
 
- loop:
+loop:
   %idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
   %idx.next = add i32 %idx, 1
   %abc.a = icmp slt i32 %idx, %len.a
   %abc.b = icmp slt i32 %idx, %len.b
   %abc = and i1 %abc.a, %abc.b
   br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1
 
-; CHECK: loop:
-; CHECK:   %abc = and i1 true, true
-; CHECK:   br i1 %abc, label %in.bounds, label %[[oob_loopexit:[^ ,]+]], !prof !1
-
-; CHECK: [[oob_loopexit]]:
-; CHECK-NEXT:  br label %out.of.bounds
-
-
- in.bounds:
+in.bounds:
   %addr.a = getelementptr i32, i32* %arr_a, i32 %idx
   store i32 0, i32* %addr.a
   %addr.b = getelementptr i32, i32* %arr_b, i32 %idx
   store i32 -1, i32* %addr.b
   %next = icmp slt i32 %idx.next, %n
   br i1 %next, label %loop, label %exit
 
- out.of.bounds:
+out.of.bounds:
   ret void
 
- exit:
+exit:
   ret void
 }
 

diff --git a/llvm/test/Transforms/IRCE/multiple-access-no-preloop.ll b/llvm/test/Transforms/IRCE/multiple-access-no-preloop.ll
@@ -1,60 +1,108 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt -verify-loop-info -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(
-    i32* %arr_a, i32* %a_len_ptr, i32* %arr_b, i32* %b_len_ptr, i32 %n) {
+; CHECK-LABEL: @multiple_access_no_preloop(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[LEN_A:%.*]] = load i32, i32* [[A_LEN_PTR:%.*]], align 4, !range [[RNG0:![0-9]+]]
+; CHECK-NEXT:    [[LEN_B:%.*]] = load i32, i32* [[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 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, i32* [[ARR_A:%.*]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, i32* [[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, i32* [[ARR_B:%.*]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 -1, i32* [[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, i32* [[ARR_A]], i32 [[IDX_POSTLOOP]]
+; CHECK-NEXT:    store i32 0, i32* [[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, i32* [[ARR_B]], i32 [[IDX_POSTLOOP]]
+; CHECK-NEXT:    store i32 -1, i32* [[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 !7
+;
+  i32* %arr_a, i32* %a_len_ptr, i32* %arr_b, i32* %b_len_ptr, i32 %n) {
 
- entry:
+  entry:
   %len.a = load i32, i32* %a_len_ptr, !range !0
   %len.b = load i32, i32* %b_len_ptr, !range !0
   %first.itr.check = icmp sgt i32 %n, 0
   br i1 %first.itr.check, label %loop, label %exit
 
- loop:
+  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:
+  in.bounds.a:
   %addr.a = getelementptr i32, i32* %arr_a, i32 %idx
   store i32 0, i32* %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:
+  in.bounds.b:
   %addr.b = getelementptr i32, i32* %arr_b, i32 %idx
   store i32 -1, i32* %addr.b
   %next = icmp slt i32 %idx.next, %n
   br i1 %next, label %loop, label %exit
 
- out.of.bounds:
+  out.of.bounds:
   ret void
 
- exit:
+  exit:
   ret void
 }
 
-; CHECK-LABEL: @multiple_access_no_preloop(
-
-; CHECK: loop.preheader:
-; CHECK: [[smax_len:[^ ]+]] = call i32 @llvm.smin.i32(i32 %len.b, i32 %len.a)
-; CHECK: [[upper_limit_loclamp:[^ ]+]] = call i32 @llvm.smin.i32(i32 [[smax_len]], i32 %n)
-; CHECK: [[upper_limit:[^ ]+]] = call i32 @llvm.smax.i32(i32 [[upper_limit_loclamp]], i32 0)
-
-; CHECK: loop:
-; CHECK: br i1 true, label %in.bounds.a, label %out.of.bounds
-
-; CHECK: in.bounds.a:
-; CHECK: br i1 true, label %in.bounds.b, label %out.of.bounds
-
-; CHECK: in.bounds.b:
-; CHECK: [[main_loop_cond:[^ ]+]] = icmp slt i32 %idx.next, [[upper_limit]]
-; CHECK: br i1 [[main_loop_cond]], label %loop, label %main.exit.selector
-
-; CHECK: in.bounds.b.postloop:
-; CHECK: %next.postloop = icmp slt i32 %idx.next.postloop, %n
-; CHECK: br i1 %next.postloop, label %loop.postloop, label %exit.loopexit
-
 !0 = !{i32 0, i32 2147483647}
 !1 = !{!"branch_weights", i32 128, i32 4}