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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -passes='loop(indvars,loop-deletion),verify<scalar-evolution>,print<scalar-evolution>' -S %s 2>&1| FileCheck %s3 4; Make sure the SCEV for %invar is invalidated properly when the instruction is5; moved by LoopDeletion.6 7 8define void @test_pr57837() {9; CHECK-LABEL: @test_pr57837(10; CHECK-NEXT: bb:11; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]12; CHECK: outer.header:13; CHECK-NEXT: br i1 true, label [[INNER_PH:%.*]], label [[OUTER_LATCH:%.*]]14; CHECK: inner.ph:15; CHECK-NEXT: [[INVAR:%.*]] = ashr i32 0, 316; CHECK-NEXT: br label [[INNER:%.*]]17; CHECK: inner:18; CHECK-NEXT: [[P:%.*]] = phi i32 [ poison, [[INNER_PH]] ], [ [[INVAR]], [[INNER]] ]19; CHECK-NEXT: [[INNER_IV:%.*]] = phi i32 [ 1, [[INNER_PH]] ], [ [[INNER_IV_NEXT:%.*]], [[INNER]] ]20; CHECK-NEXT: [[ADD_1:%.*]] = add i32 [[P]], 3058621; CHECK-NEXT: call void @use(i32 [[ADD_1]])22; CHECK-NEXT: [[INNER_IV_NEXT]] = add nuw nsw i32 [[INNER_IV]], 123; CHECK-NEXT: [[INVAR_ADD:%.*]] = add i32 [[INVAR]], 40724; CHECK-NEXT: [[INNER_CMP:%.*]] = icmp samesign ult i32 [[INNER_IV_NEXT]], [[INVAR_ADD]]25; CHECK-NEXT: br i1 [[INNER_CMP]], label [[INNER]], label [[INNER_EXIT:%.*]]26; CHECK: inner.exit:27; CHECK-NEXT: [[INVAR_LCSSA:%.*]] = phi i32 [ [[INVAR]], [[INNER]] ]28; CHECK-NEXT: br label [[OUTER_LATCH]]29; CHECK: outer.latch:30; CHECK-NEXT: [[MERGE:%.*]] = phi i32 [ 0, [[OUTER_HEADER]] ], [ [[INVAR_LCSSA]], [[INNER_EXIT]] ]31; CHECK-NEXT: call void @use(i32 [[MERGE]])32; CHECK-NEXT: br label [[EXIT:%.*]]33; CHECK: exit:34; CHECK-NEXT: ret void35;36bb:37 br label %outer.header38 39outer.header: ; preds = %bb19, %bb40 %outer.iv = phi i32 [ 0, %bb ], [ %tmp21, %outer.latch ]41 %outer.cmp = icmp ult i32 %outer.iv, 40042 br i1 %outer.cmp, label %inner.ph, label %outer.latch43 44inner.ph:45 br label %inner46 47inner:48 %p = phi i32 [ poison, %inner.ph ], [ %invar, %inner ]49 %inner.iv = phi i32 [ 1, %inner.ph ], [ %inner.iv.next , %inner ]50 %add.1 = add i32 %p, 3058651 call void @use(i32 %add.1)52 %invar = ashr i32 0, 353 %inner.iv.next = add nuw nsw i32 %inner.iv, 154 %invar.add = add i32 %invar, 40755 %inner.cmp = icmp slt i32 %inner.iv.next, %invar.add56 br i1 %inner.cmp, label %inner, label %inner.exit57 58inner.exit:59 br label %outer.latch60 61outer.latch:62 %merge = phi i32 [ 0, %outer.header ], [ %invar, %inner.exit ]63 call void @use(i32 %merge)64 %tmp21 = add i32 %outer.iv, 165 br i1 true, label %exit, label %outer.header66 67exit:68 ret void69}70 71declare void @use(i32)72 73 74define i32 @scev_invalidation_after_deleting(ptr %src) {75; CHECK-LABEL: @scev_invalidation_after_deleting(76; CHECK-NEXT: entry:77; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]78; CHECK: outer.header:79; CHECK-NEXT: [[OUTER_IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OUTER_IV_NEXT:%.*]], [[OUTER_LATCH:%.*]] ]80; CHECK-NEXT: br label [[INNER_1:%.*]]81; CHECK: inner.1:82; CHECK-NEXT: [[C_1:%.*]] = icmp eq i32 0, [[OUTER_IV]]83; CHECK-NEXT: br i1 [[C_1]], label [[INNER_2_PREHEADER:%.*]], label [[INNER_1]]84; CHECK: inner.2.preheader:85; CHECK-NEXT: br label [[INNER_3_PH:%.*]]86; CHECK: inner.3.ph:87; CHECK-NEXT: br label [[INNER_3:%.*]]88; CHECK: inner.3:89; CHECK-NEXT: [[L:%.*]] = load i32, ptr [[SRC:%.*]], align 490; CHECK-NEXT: br i1 false, label [[OUTER_LATCH]], label [[INNER_3]]91; CHECK: outer.latch:92; CHECK-NEXT: [[L_LCSSA:%.*]] = phi i32 [ [[L]], [[INNER_3]] ]93; CHECK-NEXT: [[TRUNC:%.*]] = trunc i64 0 to i3294; CHECK-NEXT: [[OUTER_IV_NEXT]] = add nsw i32 [[L_LCSSA]], [[TRUNC]]95; CHECK-NEXT: br label [[OUTER_HEADER]]96;97entry:98 br label %outer.header99 100outer.header:101 %outer.iv = phi i32 [ 0, %entry ], [ %outer.iv.next, %outer.latch ]102 br label %inner.1103 104inner.1:105 %c.1 = icmp eq i32 0, %outer.iv106 br i1 %c.1, label %inner.2, label %inner.1107 108inner.2:109 %iv.2 = phi i64 [ 0, %inner.1 ], [ %iv.2.next, %inner.2 ]110 %iv.2.next = add nuw i64 %iv.2, 1111 br i1 true, label %inner.3.ph, label %inner.2112 113inner.3.ph:114 %trunc = trunc i64 %iv.2 to i32115 br label %inner.3116 117inner.3:118 %l = load i32, ptr %src, align 4119 br i1 false, label %outer.latch, label %inner.3120 121outer.latch:122 %outer.iv.next = add nsw i32 %l, %trunc123 br label %outer.header124}125 126define void @test_pr58314() {127; CHECK-LABEL: @test_pr58314(128; CHECK-NEXT: entry:129; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]130; CHECK: outer.header:131; CHECK-NEXT: [[C:%.*]] = icmp ne i16 0, 0132; CHECK-NEXT: [[SEL:%.*]] = select i1 [[C]], i1 false, i1 true133; CHECK-NEXT: br label [[INNER:%.*]]134; CHECK: inner:135; CHECK-NEXT: br i1 true, label [[INNER]], label [[OUTER_LATCH:%.*]]136; CHECK: outer.latch:137; CHECK-NEXT: [[SEL_LCSSA:%.*]] = phi i1 [ [[SEL]], [[INNER]] ]138; CHECK-NEXT: br i1 [[SEL_LCSSA]], label [[OUTER_HEADER]], label [[EXIT:%.*]]139; CHECK: exit:140; CHECK-NEXT: ret void141;142entry:143 br label %outer.header144 145outer.header:146 br label %inner147 148inner:149 %c = icmp ne i16 0, 0150 %sel = select i1 %c, i1 false, i1 true151 br i1 true, label %inner, label %outer.latch152 153outer.latch:154 br i1 %sel, label %outer.header, label %exit155 156exit:157 ret void158}159