; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=indvars -scev-cheap-expansion-budget=1024 %s | FileCheck %s
; See https://bugs.llvm.org/show_bug.cgi?id=45360
; This is reduced from that (runnable) test.
; The remainder operation is originally guarded, it never divides by zero.
; Indvars should not make it execute unconditionally.
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-linux-gnu"
@f = dso_local global i32 0, align 4
@a = dso_local global i32 0, align 4
@d = dso_local global i32 0, align 4
@c = dso_local global i32 0, align 4
@b = dso_local global i32 0, align 4
@e = dso_local global i32 0, align 4
define i32 @main() {
; CHECK-LABEL: @main(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[I6:%.*]] = load i32, ptr @a, align 4
; CHECK-NEXT: [[I24:%.*]] = load i32, ptr @b, align 4
; CHECK-NEXT: [[D_PROMOTED10:%.*]] = load i32, ptr @d, align 4
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB5:%.*]]
; CHECK: bb13.preheader:
; CHECK-NEXT: [[DOTLCSSA:%.*]] = phi i32 [ [[TMP0:%.*]], [[BB5]] ]
; CHECK-NEXT: [[I21:%.*]] = icmp eq i32 [[DOTLCSSA]], 0
; CHECK-NEXT: br i1 [[I21]], label [[BB27_THREAD:%.*]], label [[BB27:%.*]]
; CHECK: bb5:
; CHECK-NEXT: [[TMP0]] = and i32 [[D_PROMOTED10]], [[I6]]
; CHECK-NEXT: br i1 false, label [[BB5]], label [[BB13_PREHEADER:%.*]]
; CHECK: bb27.thread:
; CHECK-NEXT: [[DOTLCSSA_LCSSA:%.*]] = phi i32 [ [[DOTLCSSA]], [[BB13_PREHEADER]] ]
; CHECK-NEXT: [[I11_LCSSA_LCSSA:%.*]] = phi i32 [ -1, [[BB13_PREHEADER]] ]
; CHECK-NEXT: store i32 [[DOTLCSSA_LCSSA]], ptr @d, align 4
; CHECK-NEXT: store i32 [[I11_LCSSA_LCSSA]], ptr @f, align 4
; CHECK-NEXT: store i32 0, ptr @c, align 4
; CHECK-NEXT: store i32 0, ptr @e, align 4
; CHECK-NEXT: br label [[BB32:%.*]]
; CHECK: bb27:
; CHECK-NEXT: [[I26:%.*]] = urem i32 [[I24]], [[DOTLCSSA]]
; CHECK-NEXT: store i32 [[I26]], ptr @e, align 4
; CHECK-NEXT: [[I30_NOT:%.*]] = icmp eq i32 [[I26]], 0
; CHECK-NEXT: br i1 [[I30_NOT]], label [[BB32_LOOPEXIT:%.*]], label [[BB36:%.*]]
; CHECK: bb32.loopexit:
; CHECK-NEXT: [[DOTLCSSA_LCSSA15:%.*]] = phi i32 [ [[DOTLCSSA]], [[BB27]] ]
; CHECK-NEXT: [[I11_LCSSA_LCSSA14:%.*]] = phi i32 [ -1, [[BB27]] ]
; CHECK-NEXT: store i32 [[DOTLCSSA_LCSSA15]], ptr @d, align 4
; CHECK-NEXT: store i32 [[I11_LCSSA_LCSSA14]], ptr @f, align 4
; CHECK-NEXT: store i32 0, ptr @c, align 4
; CHECK-NEXT: br label [[BB32]]
; CHECK: bb32:
; CHECK-NEXT: ret i32 0
; CHECK: bb36:
; CHECK-NEXT: store i32 1, ptr @c, align 4
; CHECK-NEXT: br label [[BB1]]
;
bb:
%i6 = load i32, ptr @a, align 4
%i24 = load i32, ptr @b, align 4
%d.promoted10 = load i32, ptr @d, align 4
br label %bb1
bb1: ; preds = %bb36, %bb
br label %bb5
bb13.preheader: ; preds = %bb5
%.lcssa = phi i32 [ %0, %bb5 ]
%i11.lcssa = phi i32 [ %i11, %bb5 ]
%i21 = icmp eq i32 %.lcssa, 0
br i1 %i21, label %bb27.thread, label %bb27
bb5: ; preds = %bb1, %bb5
%storemerge6 = phi i32 [ 0, %bb1 ], [ %i11, %bb5 ]
%0 = and i32 %d.promoted10, %i6
%i11 = add nsw i32 %storemerge6, -1
%i4 = icmp sgt i32 %storemerge6, 0
br i1 %i4, label %bb5, label %bb13.preheader
bb27.thread: ; preds = %bb13.preheader
%.lcssa.lcssa = phi i32 [ %.lcssa, %bb13.preheader ]
%i11.lcssa.lcssa = phi i32 [ %i11.lcssa, %bb13.preheader ]
store i32 %.lcssa.lcssa, ptr @d, align 4
store i32 %i11.lcssa.lcssa, ptr @f, align 4
store i32 0, ptr @c, align 4
store i32 0, ptr @e, align 4
br label %bb32
bb27: ; preds = %bb13.preheader
%i26 = urem i32 %i24, %.lcssa
store i32 %i26, ptr @e, align 4
%i30.not = icmp eq i32 %i26, 0
br i1 %i30.not, label %bb32.loopexit, label %bb36
bb32.loopexit: ; preds = %bb27
%.lcssa.lcssa15 = phi i32 [ %.lcssa, %bb27 ]
%i11.lcssa.lcssa14 = phi i32 [ %i11.lcssa, %bb27 ]
store i32 %.lcssa.lcssa15, ptr @d, align 4
store i32 %i11.lcssa.lcssa14, ptr @f, align 4
store i32 0, ptr @c, align 4
br label %bb32
bb32: ; preds = %bb32.loopexit, %bb27.thread
ret i32 0
bb36: ; preds = %bb27
store i32 1, ptr @c, align 4
br label %bb1
}
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