109 lines
5.5 KiB
LLVM
109 lines
5.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -verify-loop-info -irce -S < %s | FileCheck %s
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; RUN: opt -verify-loop-info -passes='require<branch-prob>,irce' -S < %s | FileCheck %s
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define void @multiple_access_no_preloop(
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; CHECK-LABEL: @multiple_access_no_preloop(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[LEN_A:%.*]] = load i32, ptr [[A_LEN_PTR:%.*]], align 4, !range [[RNG0:![0-9]+]]
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; CHECK-NEXT: [[LEN_B:%.*]] = load i32, ptr [[B_LEN_PTR:%.*]], align 4, !range [[RNG0]]
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; CHECK-NEXT: [[FIRST_ITR_CHECK:%.*]] = icmp sgt i32 [[N:%.*]], 0
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; CHECK-NEXT: br i1 [[FIRST_ITR_CHECK]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
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; CHECK: loop.preheader:
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; CHECK-NEXT: [[SMIN:%.*]] = call i32 @llvm.smin.i32(i32 [[LEN_B]], i32 [[LEN_A]])
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; CHECK-NEXT: [[SMIN1:%.*]] = call i32 @llvm.smin.i32(i32 [[SMIN]], i32 [[N]])
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; CHECK-NEXT: [[EXIT_MAINLOOP_AT:%.*]] = call i32 @llvm.smax.i32(i32 [[SMIN1]], i32 0)
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; CHECK-NEXT: [[TMP0:%.*]] = icmp slt i32 0, [[EXIT_MAINLOOP_AT]]
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; CHECK-NEXT: br i1 [[TMP0]], label [[LOOP_PREHEADER2:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
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; CHECK: loop.preheader2:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS_B:%.*]] ], [ 0, [[LOOP_PREHEADER2]] ]
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; CHECK-NEXT: [[IDX_NEXT]] = add i32 [[IDX]], 1
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; CHECK-NEXT: [[ABC_A:%.*]] = icmp slt i32 [[IDX]], [[LEN_A]]
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; CHECK-NEXT: br i1 true, label [[IN_BOUNDS_A:%.*]], label [[OUT_OF_BOUNDS_LOOPEXIT3:%.*]], !prof [[PROF1:![0-9]+]]
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; CHECK: in.bounds.a:
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; CHECK-NEXT: [[ADDR_A:%.*]] = getelementptr i32, ptr [[ARR_A:%.*]], i32 [[IDX]]
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; CHECK-NEXT: store i32 0, ptr [[ADDR_A]], align 4
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; CHECK-NEXT: [[ABC_B:%.*]] = icmp slt i32 [[IDX]], [[LEN_B]]
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; CHECK-NEXT: br i1 true, label [[IN_BOUNDS_B]], label [[OUT_OF_BOUNDS_LOOPEXIT3]], !prof [[PROF1]]
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; CHECK: in.bounds.b:
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; CHECK-NEXT: [[ADDR_B:%.*]] = getelementptr i32, ptr [[ARR_B:%.*]], i32 [[IDX]]
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; CHECK-NEXT: store i32 -1, ptr [[ADDR_B]], align 4
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; CHECK-NEXT: [[NEXT:%.*]] = icmp slt i32 [[IDX_NEXT]], [[N]]
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; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]]
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; CHECK-NEXT: br i1 [[TMP1]], label [[LOOP]], label [[MAIN_EXIT_SELECTOR:%.*]]
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; CHECK: main.exit.selector:
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; CHECK-NEXT: [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS_B]] ]
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; CHECK-NEXT: [[TMP2:%.*]] = icmp slt i32 [[IDX_NEXT_LCSSA]], [[N]]
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; CHECK-NEXT: br i1 [[TMP2]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT_LOOPEXIT:%.*]]
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; CHECK: main.pseudo.exit:
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; CHECK-NEXT: [[IDX_COPY:%.*]] = phi i32 [ 0, [[LOOP_PREHEADER]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
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; CHECK-NEXT: [[INDVAR_END:%.*]] = phi i32 [ 0, [[LOOP_PREHEADER]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
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; CHECK-NEXT: br label [[POSTLOOP:%.*]]
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; CHECK: out.of.bounds.loopexit:
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; CHECK-NEXT: br label [[OUT_OF_BOUNDS:%.*]]
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; CHECK: out.of.bounds.loopexit3:
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; CHECK-NEXT: br label [[OUT_OF_BOUNDS]]
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; CHECK: out.of.bounds:
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; CHECK-NEXT: ret void
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; CHECK: exit.loopexit.loopexit:
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; CHECK-NEXT: br label [[EXIT_LOOPEXIT]]
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; CHECK: exit.loopexit:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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; CHECK: postloop:
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; CHECK-NEXT: br label [[LOOP_POSTLOOP:%.*]]
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; CHECK: loop.postloop:
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; CHECK-NEXT: [[IDX_POSTLOOP:%.*]] = phi i32 [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_B_POSTLOOP:%.*]] ], [ [[IDX_COPY]], [[POSTLOOP]] ]
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; CHECK-NEXT: [[IDX_NEXT_POSTLOOP]] = add i32 [[IDX_POSTLOOP]], 1
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; CHECK-NEXT: [[ABC_A_POSTLOOP:%.*]] = icmp slt i32 [[IDX_POSTLOOP]], [[LEN_A]]
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; CHECK-NEXT: br i1 [[ABC_A_POSTLOOP]], label [[IN_BOUNDS_A_POSTLOOP:%.*]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]], !prof [[PROF1]]
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; CHECK: in.bounds.a.postloop:
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; CHECK-NEXT: [[ADDR_A_POSTLOOP:%.*]] = getelementptr i32, ptr [[ARR_A]], i32 [[IDX_POSTLOOP]]
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; CHECK-NEXT: store i32 0, ptr [[ADDR_A_POSTLOOP]], align 4
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; CHECK-NEXT: [[ABC_B_POSTLOOP:%.*]] = icmp slt i32 [[IDX_POSTLOOP]], [[LEN_B]]
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; CHECK-NEXT: br i1 [[ABC_B_POSTLOOP]], label [[IN_BOUNDS_B_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT]], !prof [[PROF1]]
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; CHECK: in.bounds.b.postloop:
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; CHECK-NEXT: [[ADDR_B_POSTLOOP:%.*]] = getelementptr i32, ptr [[ARR_B]], i32 [[IDX_POSTLOOP]]
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; CHECK-NEXT: store i32 -1, ptr [[ADDR_B_POSTLOOP]], align 4
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; CHECK-NEXT: [[NEXT_POSTLOOP:%.*]] = icmp slt i32 [[IDX_NEXT_POSTLOOP]], [[N]]
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; CHECK-NEXT: br i1 [[NEXT_POSTLOOP]], label [[LOOP_POSTLOOP]], label [[EXIT_LOOPEXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP2:![0-9]+]], !irce.loop.clone !7
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;
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ptr %arr_a, ptr %a_len_ptr, ptr %arr_b, ptr %b_len_ptr, i32 %n) {
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entry:
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%len.a = load i32, ptr %a_len_ptr, !range !0
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%len.b = load i32, ptr %b_len_ptr, !range !0
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%first.itr.check = icmp sgt i32 %n, 0
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br i1 %first.itr.check, label %loop, label %exit
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loop:
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%idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds.b ]
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%idx.next = add i32 %idx, 1
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%abc.a = icmp slt i32 %idx, %len.a
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br i1 %abc.a, label %in.bounds.a, label %out.of.bounds, !prof !1
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in.bounds.a:
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%addr.a = getelementptr i32, ptr %arr_a, i32 %idx
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store i32 0, ptr %addr.a
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%abc.b = icmp slt i32 %idx, %len.b
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br i1 %abc.b, label %in.bounds.b, label %out.of.bounds, !prof !1
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in.bounds.b:
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%addr.b = getelementptr i32, ptr %arr_b, i32 %idx
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store i32 -1, ptr %addr.b
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%next = icmp slt i32 %idx.next, %n
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br i1 %next, label %loop, label %exit
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out.of.bounds:
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ret void
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exit:
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ret void
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}
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!0 = !{i32 0, i32 2147483647}
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!1 = !{!"branch_weights", i32 128, i32 4}
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