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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=loop-predication < %s 2>&1 | FileCheck %s
; RUN: opt -S -passes='require<scalar-evolution>,loop-mssa(loop-predication)' -verify-memoryssa < %s 2>&1 | FileCheck %s
declare void @llvm.experimental.guard(i1, ...)
define i32 @signed_loop_0_to_n_nested_0_to_l_inner_index_check(ptr %array, i32 %length, i32 %n, i32 %l) {
; CHECK-LABEL: @signed_loop_0_to_n_nested_0_to_l_inner_index_check(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP5:%.*]] = icmp sle i32 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[TMP5]], label [[EXIT:%.*]], label [[OUTER_LOOP_PREHEADER:%.*]]
; CHECK: outer.loop.preheader:
; CHECK-NEXT: br label [[OUTER_LOOP:%.*]]
; CHECK: outer.loop:
; CHECK-NEXT: [[OUTER_LOOP_ACC:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT:%.*]], [[OUTER_LOOP_INC:%.*]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[OUTER_LOOP_INC]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[TMP6:%.*]] = icmp sle i32 [[L:%.*]], 0
; CHECK-NEXT: br i1 [[TMP6]], label [[OUTER_LOOP_INC]], label [[INNER_LOOP_PREHEADER:%.*]]
; CHECK: inner.loop.preheader:
; CHECK-NEXT: [[TMP0:%.*]] = icmp sle i32 [[L]], [[LENGTH:%.*]]
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 0, [[LENGTH]]
; CHECK-NEXT: [[TMP2:%.*]] = and i1 [[TMP1]], [[TMP0]]
; CHECK-NEXT: [[TMP3:%.*]] = freeze i1 [[TMP2]]
; CHECK-NEXT: br label [[INNER_LOOP:%.*]]
; CHECK: inner.loop:
; CHECK-NEXT: [[INNER_LOOP_ACC:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT:%.*]], [[INNER_LOOP]] ], [ [[OUTER_LOOP_ACC]], [[INNER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[J:%.*]] = phi i32 [ [[J_NEXT:%.*]], [[INNER_LOOP]] ], [ 0, [[INNER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[WITHIN_BOUNDS:%.*]] = icmp ult i32 [[J]], [[LENGTH]]
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[TMP3]], i32 9) [ "deopt"() ]
; CHECK-NEXT: call void @llvm.assume(i1 [[WITHIN_BOUNDS]])
; CHECK-NEXT: [[J_I64:%.*]] = zext i32 [[J]] to i64
; CHECK-NEXT: [[ARRAY_J_PTR:%.*]] = getelementptr inbounds i32, ptr [[ARRAY:%.*]], i64 [[J_I64]]
; CHECK-NEXT: [[ARRAY_J:%.*]] = load i32, ptr [[ARRAY_J_PTR]], align 4
; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT]] = add i32 [[INNER_LOOP_ACC]], [[ARRAY_J]]
; CHECK-NEXT: [[J_NEXT]] = add nsw i32 [[J]], 1
; CHECK-NEXT: [[INNER_CONTINUE:%.*]] = icmp slt i32 [[J_NEXT]], [[L]]
; CHECK-NEXT: br i1 [[INNER_CONTINUE]], label [[INNER_LOOP]], label [[OUTER_LOOP_INC_LOOPEXIT:%.*]]
; CHECK: outer.loop.inc.loopexit:
; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT]], [[INNER_LOOP]] ]
; CHECK-NEXT: br label [[OUTER_LOOP_INC]]
; CHECK: outer.loop.inc:
; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT]] = phi i32 [ [[OUTER_LOOP_ACC]], [[OUTER_LOOP]] ], [ [[INNER_LOOP_ACC_NEXT_LCSSA]], [[OUTER_LOOP_INC_LOOPEXIT]] ]
; CHECK-NEXT: [[I_NEXT]] = add nsw i32 [[I]], 1
; CHECK-NEXT: [[OUTER_CONTINUE:%.*]] = icmp slt i32 [[I_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[OUTER_CONTINUE]], label [[OUTER_LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; CHECK: exit.loopexit:
; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT]], [[OUTER_LOOP_INC]] ]
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[RESULT:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OUTER_LOOP_ACC_NEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]
; CHECK-NEXT: ret i32 [[RESULT]]
;
entry:
%tmp5 = icmp sle i32 %n, 0
br i1 %tmp5, label %exit, label %outer.loop.preheader
outer.loop.preheader:
br label %outer.loop
outer.loop:
%outer.loop.acc = phi i32 [ %outer.loop.acc.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]
%i = phi i32 [ %i.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]
%tmp6 = icmp sle i32 %l, 0
br i1 %tmp6, label %outer.loop.inc, label %inner.loop.preheader
inner.loop.preheader:
br label %inner.loop
inner.loop:
%inner.loop.acc = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %inner.loop.preheader ]
%j = phi i32 [ %j.next, %inner.loop ], [ 0, %inner.loop.preheader ]
%within.bounds = icmp ult i32 %j, %length
call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
%j.i64 = zext i32 %j to i64
%array.j.ptr = getelementptr inbounds i32, ptr %array, i64 %j.i64
%array.j = load i32, ptr %array.j.ptr, align 4
%inner.loop.acc.next = add i32 %inner.loop.acc, %array.j
%j.next = add nsw i32 %j, 1
%inner.continue = icmp slt i32 %j.next, %l
br i1 %inner.continue, label %inner.loop, label %outer.loop.inc
outer.loop.inc:
%outer.loop.acc.next = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %outer.loop ]
%i.next = add nsw i32 %i, 1
%outer.continue = icmp slt i32 %i.next, %n
br i1 %outer.continue, label %outer.loop, label %exit
exit:
%result = phi i32 [ 0, %entry ], [ %outer.loop.acc.next, %outer.loop.inc ]
ret i32 %result
}
define i32 @signed_loop_0_to_n_nested_0_to_l_outer_index_check(ptr %array, i32 %length, i32 %n, i32 %l) {
; CHECK-LABEL: @signed_loop_0_to_n_nested_0_to_l_outer_index_check(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP5:%.*]] = icmp sle i32 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[TMP5]], label [[EXIT:%.*]], label [[OUTER_LOOP_PREHEADER:%.*]]
; CHECK: outer.loop.preheader:
; CHECK-NEXT: [[TMP0:%.*]] = icmp sle i32 [[N]], [[LENGTH:%.*]]
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 0, [[LENGTH]]
; CHECK-NEXT: [[TMP2:%.*]] = and i1 [[TMP1]], [[TMP0]]
; CHECK-NEXT: [[TMP3:%.*]] = freeze i1 [[TMP2]]
; CHECK-NEXT: br label [[OUTER_LOOP:%.*]]
; CHECK: outer.loop:
; CHECK-NEXT: [[OUTER_LOOP_ACC:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT:%.*]], [[OUTER_LOOP_INC:%.*]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[OUTER_LOOP_INC]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[TMP6:%.*]] = icmp sle i32 [[L:%.*]], 0
; CHECK-NEXT: br i1 [[TMP6]], label [[OUTER_LOOP_INC]], label [[INNER_LOOP_PREHEADER:%.*]]
; CHECK: inner.loop.preheader:
; CHECK-NEXT: br label [[INNER_LOOP:%.*]]
; CHECK: inner.loop:
; CHECK-NEXT: [[INNER_LOOP_ACC:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT:%.*]], [[INNER_LOOP]] ], [ [[OUTER_LOOP_ACC]], [[INNER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[J:%.*]] = phi i32 [ [[J_NEXT:%.*]], [[INNER_LOOP]] ], [ 0, [[INNER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[WITHIN_BOUNDS:%.*]] = icmp ult i32 [[I]], [[LENGTH]]
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[TMP3]], i32 9) [ "deopt"() ]
; CHECK-NEXT: call void @llvm.assume(i1 [[WITHIN_BOUNDS]])
; CHECK-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64
; CHECK-NEXT: [[ARRAY_I_PTR:%.*]] = getelementptr inbounds i32, ptr [[ARRAY:%.*]], i64 [[I_I64]]
; CHECK-NEXT: [[ARRAY_I:%.*]] = load i32, ptr [[ARRAY_I_PTR]], align 4
; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT]] = add i32 [[INNER_LOOP_ACC]], [[ARRAY_I]]
; CHECK-NEXT: [[J_NEXT]] = add nsw i32 [[J]], 1
; CHECK-NEXT: [[INNER_CONTINUE:%.*]] = icmp slt i32 [[J_NEXT]], [[L]]
; CHECK-NEXT: br i1 [[INNER_CONTINUE]], label [[INNER_LOOP]], label [[OUTER_LOOP_INC_LOOPEXIT:%.*]]
; CHECK: outer.loop.inc.loopexit:
; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT]], [[INNER_LOOP]] ]
; CHECK-NEXT: br label [[OUTER_LOOP_INC]]
; CHECK: outer.loop.inc:
; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT]] = phi i32 [ [[OUTER_LOOP_ACC]], [[OUTER_LOOP]] ], [ [[INNER_LOOP_ACC_NEXT_LCSSA]], [[OUTER_LOOP_INC_LOOPEXIT]] ]
; CHECK-NEXT: [[I_NEXT]] = add nsw i32 [[I]], 1
; CHECK-NEXT: [[OUTER_CONTINUE:%.*]] = icmp slt i32 [[I_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[OUTER_CONTINUE]], label [[OUTER_LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; CHECK: exit.loopexit:
; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT]], [[OUTER_LOOP_INC]] ]
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[RESULT:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OUTER_LOOP_ACC_NEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]
; CHECK-NEXT: ret i32 [[RESULT]]
;
entry:
%tmp5 = icmp sle i32 %n, 0
br i1 %tmp5, label %exit, label %outer.loop.preheader
outer.loop.preheader:
br label %outer.loop
outer.loop:
%outer.loop.acc = phi i32 [ %outer.loop.acc.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]
%i = phi i32 [ %i.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]
%tmp6 = icmp sle i32 %l, 0
br i1 %tmp6, label %outer.loop.inc, label %inner.loop.preheader
inner.loop.preheader:
br label %inner.loop
inner.loop:
%inner.loop.acc = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %inner.loop.preheader ]
%j = phi i32 [ %j.next, %inner.loop ], [ 0, %inner.loop.preheader ]
%within.bounds = icmp ult i32 %i, %length
call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
%i.i64 = zext i32 %i to i64
%array.i.ptr = getelementptr inbounds i32, ptr %array, i64 %i.i64
%array.i = load i32, ptr %array.i.ptr, align 4
%inner.loop.acc.next = add i32 %inner.loop.acc, %array.i
%j.next = add nsw i32 %j, 1
%inner.continue = icmp slt i32 %j.next, %l
br i1 %inner.continue, label %inner.loop, label %outer.loop.inc
outer.loop.inc:
%outer.loop.acc.next = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %outer.loop ]
%i.next = add nsw i32 %i, 1
%outer.continue = icmp slt i32 %i.next, %n
br i1 %outer.continue, label %outer.loop, label %exit
exit:
%result = phi i32 [ 0, %entry ], [ %outer.loop.acc.next, %outer.loop.inc ]
ret i32 %result
}
define i32 @signed_loop_0_to_n_nested_i_to_l_inner_index_check(ptr %array, i32 %length, i32 %n, i32 %l) {
; CHECK-LABEL: @signed_loop_0_to_n_nested_i_to_l_inner_index_check(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP5:%.*]] = icmp sle i32 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[TMP5]], label [[EXIT:%.*]], label [[OUTER_LOOP_PREHEADER:%.*]]
; CHECK: outer.loop.preheader:
; CHECK-NEXT: br label [[OUTER_LOOP:%.*]]
; CHECK: outer.loop:
; CHECK-NEXT: [[OUTER_LOOP_ACC:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT:%.*]], [[OUTER_LOOP_INC:%.*]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[OUTER_LOOP_INC]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[TMP6:%.*]] = icmp sle i32 [[L:%.*]], 0
; CHECK-NEXT: br i1 [[TMP6]], label [[OUTER_LOOP_INC]], label [[INNER_LOOP_PREHEADER:%.*]]
; CHECK: inner.loop.preheader:
; CHECK-NEXT: [[TMP0:%.*]] = icmp sle i32 [[L]], [[LENGTH:%.*]]
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[I]], [[LENGTH]]
; CHECK-NEXT: [[TMP2:%.*]] = and i1 [[TMP1]], [[TMP0]]
; CHECK-NEXT: [[TMP3:%.*]] = freeze i1 [[TMP2]]
; CHECK-NEXT: br label [[INNER_LOOP:%.*]]
; CHECK: inner.loop:
; CHECK-NEXT: [[INNER_LOOP_ACC:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT:%.*]], [[INNER_LOOP]] ], [ [[OUTER_LOOP_ACC]], [[INNER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[J:%.*]] = phi i32 [ [[J_NEXT:%.*]], [[INNER_LOOP]] ], [ [[I]], [[INNER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[WITHIN_BOUNDS:%.*]] = icmp ult i32 [[J]], [[LENGTH]]
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[TMP3]], i32 9) [ "deopt"() ]
; CHECK-NEXT: call void @llvm.assume(i1 [[WITHIN_BOUNDS]])
; CHECK-NEXT: [[J_I64:%.*]] = zext i32 [[J]] to i64
; CHECK-NEXT: [[ARRAY_J_PTR:%.*]] = getelementptr inbounds i32, ptr [[ARRAY:%.*]], i64 [[J_I64]]
; CHECK-NEXT: [[ARRAY_J:%.*]] = load i32, ptr [[ARRAY_J_PTR]], align 4
; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT]] = add i32 [[INNER_LOOP_ACC]], [[ARRAY_J]]
; CHECK-NEXT: [[J_NEXT]] = add nsw i32 [[J]], 1
; CHECK-NEXT: [[INNER_CONTINUE:%.*]] = icmp slt i32 [[J_NEXT]], [[L]]
; CHECK-NEXT: br i1 [[INNER_CONTINUE]], label [[INNER_LOOP]], label [[OUTER_LOOP_INC_LOOPEXIT:%.*]]
; CHECK: outer.loop.inc.loopexit:
; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT]], [[INNER_LOOP]] ]
; CHECK-NEXT: br label [[OUTER_LOOP_INC]]
; CHECK: outer.loop.inc:
; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT]] = phi i32 [ [[OUTER_LOOP_ACC]], [[OUTER_LOOP]] ], [ [[INNER_LOOP_ACC_NEXT_LCSSA]], [[OUTER_LOOP_INC_LOOPEXIT]] ]
; CHECK-NEXT: [[I_NEXT]] = add nsw i32 [[I]], 1
; CHECK-NEXT: [[OUTER_CONTINUE:%.*]] = icmp slt i32 [[I_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[OUTER_CONTINUE]], label [[OUTER_LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; CHECK: exit.loopexit:
; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT]], [[OUTER_LOOP_INC]] ]
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[RESULT:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OUTER_LOOP_ACC_NEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]
; CHECK-NEXT: ret i32 [[RESULT]]
;
entry:
%tmp5 = icmp sle i32 %n, 0
br i1 %tmp5, label %exit, label %outer.loop.preheader
outer.loop.preheader:
br label %outer.loop
outer.loop:
%outer.loop.acc = phi i32 [ %outer.loop.acc.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]
%i = phi i32 [ %i.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]
%tmp6 = icmp sle i32 %l, 0
br i1 %tmp6, label %outer.loop.inc, label %inner.loop.preheader
inner.loop.preheader:
br label %inner.loop
inner.loop:
%inner.loop.acc = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %inner.loop.preheader ]
%j = phi i32 [ %j.next, %inner.loop ], [ %i, %inner.loop.preheader ]
%within.bounds = icmp ult i32 %j, %length
call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
%j.i64 = zext i32 %j to i64
%array.j.ptr = getelementptr inbounds i32, ptr %array, i64 %j.i64
%array.j = load i32, ptr %array.j.ptr, align 4
%inner.loop.acc.next = add i32 %inner.loop.acc, %array.j
%j.next = add nsw i32 %j, 1
%inner.continue = icmp slt i32 %j.next, %l
br i1 %inner.continue, label %inner.loop, label %outer.loop.inc
outer.loop.inc:
%outer.loop.acc.next = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %outer.loop ]
%i.next = add nsw i32 %i, 1
%outer.continue = icmp slt i32 %i.next, %n
br i1 %outer.continue, label %outer.loop, label %exit
exit:
%result = phi i32 [ 0, %entry ], [ %outer.loop.acc.next, %outer.loop.inc ]
ret i32 %result
}
define i32 @cant_expand_guard_check_start(ptr %array, i32 %length, i32 %n, i32 %l, i32 %maybezero) {
; CHECK-LABEL: @cant_expand_guard_check_start(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP5:%.*]] = icmp sle i32 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[TMP5]], label [[EXIT:%.*]], label [[OUTER_LOOP_PREHEADER:%.*]]
; CHECK: outer.loop.preheader:
; CHECK-NEXT: br label [[OUTER_LOOP:%.*]]
; CHECK: outer.loop:
; CHECK-NEXT: [[OUTER_LOOP_ACC:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT:%.*]], [[OUTER_LOOP_INC:%.*]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[OUTER_LOOP_INC]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[TMP6:%.*]] = icmp sle i32 [[L:%.*]], 0
; CHECK-NEXT: [[DIV:%.*]] = udiv i32 [[I]], [[MAYBEZERO:%.*]]
; CHECK-NEXT: br i1 [[TMP6]], label [[OUTER_LOOP_INC]], label [[INNER_LOOP_PREHEADER:%.*]]
; CHECK: inner.loop.preheader:
; CHECK-NEXT: br label [[INNER_LOOP:%.*]]
; CHECK: inner.loop:
; CHECK-NEXT: [[INNER_LOOP_ACC:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT:%.*]], [[INNER_LOOP]] ], [ [[OUTER_LOOP_ACC]], [[INNER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[J:%.*]] = phi i32 [ [[J_NEXT:%.*]], [[INNER_LOOP]] ], [ [[DIV]], [[INNER_LOOP_PREHEADER]] ]
; CHECK-NEXT: [[WITHIN_BOUNDS:%.*]] = icmp ult i32 [[J]], [[LENGTH:%.*]]
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[WITHIN_BOUNDS]], i32 9) [ "deopt"() ]
; CHECK-NEXT: [[J_I64:%.*]] = zext i32 [[J]] to i64
; CHECK-NEXT: [[ARRAY_J_PTR:%.*]] = getelementptr inbounds i32, ptr [[ARRAY:%.*]], i64 [[J_I64]]
; CHECK-NEXT: [[ARRAY_J:%.*]] = load i32, ptr [[ARRAY_J_PTR]], align 4
; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT]] = add i32 [[INNER_LOOP_ACC]], [[ARRAY_J]]
; CHECK-NEXT: [[J_NEXT]] = add nsw i32 [[J]], 1
; CHECK-NEXT: [[INNER_CONTINUE:%.*]] = icmp slt i32 [[J_NEXT]], [[L]]
; CHECK-NEXT: br i1 [[INNER_CONTINUE]], label [[INNER_LOOP]], label [[OUTER_LOOP_INC_LOOPEXIT:%.*]]
; CHECK: outer.loop.inc.loopexit:
; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT]], [[INNER_LOOP]] ]
; CHECK-NEXT: br label [[OUTER_LOOP_INC]]
; CHECK: outer.loop.inc:
; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT]] = phi i32 [ [[OUTER_LOOP_ACC]], [[OUTER_LOOP]] ], [ [[INNER_LOOP_ACC_NEXT_LCSSA]], [[OUTER_LOOP_INC_LOOPEXIT]] ]
; CHECK-NEXT: [[I_NEXT]] = add nsw i32 [[I]], 1
; CHECK-NEXT: [[OUTER_CONTINUE:%.*]] = icmp slt i32 [[I_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[OUTER_CONTINUE]], label [[OUTER_LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; CHECK: exit.loopexit:
; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT]], [[OUTER_LOOP_INC]] ]
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[RESULT:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OUTER_LOOP_ACC_NEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]
; CHECK-NEXT: ret i32 [[RESULT]]
;
entry:
%tmp5 = icmp sle i32 %n, 0
br i1 %tmp5, label %exit, label %outer.loop.preheader
outer.loop.preheader:
br label %outer.loop
outer.loop:
%outer.loop.acc = phi i32 [ %outer.loop.acc.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]
%i = phi i32 [ %i.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]
%tmp6 = icmp sle i32 %l, 0
%div = udiv i32 %i, %maybezero
br i1 %tmp6, label %outer.loop.inc, label %inner.loop.preheader
inner.loop.preheader:
br label %inner.loop
inner.loop:
%inner.loop.acc = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %inner.loop.preheader ]
%j = phi i32 [ %j.next, %inner.loop ], [ %div, %inner.loop.preheader ]
%within.bounds = icmp ult i32 %j, %length
call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]
%j.i64 = zext i32 %j to i64
%array.j.ptr = getelementptr inbounds i32, ptr %array, i64 %j.i64
%array.j = load i32, ptr %array.j.ptr, align 4
%inner.loop.acc.next = add i32 %inner.loop.acc, %array.j
%j.next = add nsw i32 %j, 1
%inner.continue = icmp slt i32 %j.next, %l
br i1 %inner.continue, label %inner.loop, label %outer.loop.inc
outer.loop.inc:
%outer.loop.acc.next = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %outer.loop ]
%i.next = add nsw i32 %i, 1
%outer.continue = icmp slt i32 %i.next, %n
br i1 %outer.continue, label %outer.loop, label %exit
exit:
%result = phi i32 [ 0, %entry ], [ %outer.loop.acc.next, %outer.loop.inc ]
ret i32 %result
}
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