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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt < %s -S -loop-reduce -mtriple=x86_64-- -mcpu=core2 | FileCheck %s3 4declare i1 @check() nounwind5declare i1 @foo(ptr, ptr, ptr) nounwind6 7; Check that redundant phi elimination ran8define i32 @test(ptr %base) nounwind uwtable ssp {9; CHECK-LABEL: @test(10; CHECK-NEXT: entry:11; CHECK-NEXT: br label [[WHILE_BODY_LR_PH_I:%.*]]12; CHECK: while.body.lr.ph.i:13; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i8, ptr [[BASE:%.*]], i64 1614; CHECK-NEXT: br label [[WHILE_BODY_I:%.*]]15; CHECK: while.body.i:16; CHECK-NEXT: [[INDVARS_IV7_I:%.*]] = phi i64 [ 16, [[WHILE_BODY_LR_PH_I]] ], [ [[INDVARS_IV_NEXT8_I:%.*]], [[COND_TRUE29_I:%.*]] ]17; CHECK-NEXT: [[I_05_I:%.*]] = phi i64 [ 0, [[WHILE_BODY_LR_PH_I]] ], [ [[INDVARS_IV7_I]], [[COND_TRUE29_I]] ]18; CHECK-NEXT: [[LSR4:%.*]] = trunc i64 [[I_05_I]] to i3219; CHECK-NEXT: [[TMP0:%.*]] = sext i32 [[LSR4]] to i6420; CHECK-NEXT: [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[SCEVGEP]], i64 [[TMP0]]21; CHECK-NEXT: [[SEXT_I:%.*]] = shl i64 [[I_05_I]], 3222; CHECK-NEXT: [[IDX_EXT_I:%.*]] = ashr exact i64 [[SEXT_I]], 3223; CHECK-NEXT: [[ADD_PTR_SUM_I:%.*]] = add i64 [[IDX_EXT_I]], 1624; CHECK-NEXT: br label [[FOR_BODY_I:%.*]]25; CHECK: for.body.i:26; CHECK-NEXT: [[LSR_IV2:%.*]] = phi ptr [ [[SCEVGEP3:%.*]], [[FOR_BODY_I]] ], [ [[SCEVGEP1]], [[WHILE_BODY_I]] ]27; CHECK-NEXT: [[TMP1:%.*]] = load i8, ptr [[LSR_IV2]], align 128; CHECK-NEXT: [[CMP:%.*]] = call i1 @check() #[[ATTR3:[0-9]+]]29; CHECK-NEXT: [[SCEVGEP3]] = getelementptr i8, ptr [[LSR_IV2]], i64 130; CHECK-NEXT: br i1 [[CMP]], label [[FOR_END_I:%.*]], label [[FOR_BODY_I]]31; CHECK: for.end.i:32; CHECK-NEXT: [[ADD_PTR_I144:%.*]] = getelementptr inbounds i8, ptr [[BASE]], i64 [[ADD_PTR_SUM_I]]33; CHECK-NEXT: [[CMP2:%.*]] = tail call i1 @foo(ptr [[ADD_PTR_I144]], ptr [[ADD_PTR_I144]], ptr undef) #[[ATTR3]]34; CHECK-NEXT: br i1 [[CMP2]], label [[COND_TRUE29_I]], label [[COND_FALSE35_I:%.*]]35; CHECK: cond.true29.i:36; CHECK-NEXT: [[INDVARS_IV_NEXT8_I]] = add i64 [[INDVARS_IV7_I]], 1637; CHECK-NEXT: br i1 false, label [[EXIT:%.*]], label [[WHILE_BODY_I]]38; CHECK: cond.false35.i:39; CHECK-NEXT: unreachable40; CHECK: exit:41; CHECK-NEXT: ret i32 042;43entry:44 br label %while.body.lr.ph.i45 46while.body.lr.ph.i: ; preds = %cond.true.i47 br label %while.body.i48 49while.body.i: ; preds = %cond.true29.i, %while.body.lr.ph.i50 %indvars.iv7.i = phi i64 [ 16, %while.body.lr.ph.i ], [ %indvars.iv.next8.i, %cond.true29.i ]51 %i.05.i = phi i64 [ 0, %while.body.lr.ph.i ], [ %indvars.iv7.i, %cond.true29.i ]52 %sext.i = shl i64 %i.05.i, 3253 %idx.ext.i = ashr exact i64 %sext.i, 3254 %add.ptr.sum.i = add i64 %idx.ext.i, 1655 br label %for.body.i56 57for.body.i: ; preds = %for.body.i, %while.body.i58 %indvars.iv.i = phi i64 [ 0, %while.body.i ], [ %indvars.iv.next.i, %for.body.i ]59 %add.ptr.sum = add i64 %add.ptr.sum.i, %indvars.iv.i60 %arrayidx22.i = getelementptr inbounds i8, ptr %base, i64 %add.ptr.sum61 %0 = load i8, ptr %arrayidx22.i, align 162 %indvars.iv.next.i = add i64 %indvars.iv.i, 163 %cmp = call i1 @check() nounwind64 br i1 %cmp, label %for.end.i, label %for.body.i65 66for.end.i: ; preds = %for.body.i67 %add.ptr.i144 = getelementptr inbounds i8, ptr %base, i64 %add.ptr.sum.i68 %cmp2 = tail call i1 @foo(ptr %add.ptr.i144, ptr %add.ptr.i144, ptr undef) nounwind69 br i1 %cmp2, label %cond.true29.i, label %cond.false35.i70 71cond.true29.i: ; preds = %for.end.i72 %indvars.iv.next8.i = add i64 %indvars.iv7.i, 1673 br i1 false, label %exit, label %while.body.i74 75cond.false35.i: ; preds = %for.end.i76 unreachable77 78exit: ; preds = %cond.true29.i, %cond.true.i79 ret i32 080}81 82%struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771 = type { i32, i32, i32 }83 84@tags = external global [5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771], align 1685 86; PR11782: SCEVExpander assert87;88; Test phi reuse after LSR that requires SCEVExpander to hoist an89; interesting GEP.90;91define void @test2(i32 %n, i1 %arg) nounwind uwtable {92; CHECK-LABEL: @test2(93; CHECK-NEXT: entry:94; CHECK-NEXT: br i1 [[ARG:%.*]], label [[WHILE_END:%.*]], label [[FOR_COND468_PREHEADER:%.*]]95; CHECK: for.cond468.preheader:96; CHECK-NEXT: br label [[FOR_COND468:%.*]]97; CHECK: for.cond468:98; CHECK-NEXT: [[LSR_IV1:%.*]] = phi i32 [ 1, [[FOR_COND468_PREHEADER]] ], [ [[LSR_IV_NEXT:%.*]], [[IF_THEN477:%.*]] ]99; CHECK-NEXT: [[LSR_IV:%.*]] = phi ptr [ getelementptr inbounds nuw (i8, ptr @tags, i64 8), [[FOR_COND468_PREHEADER]] ], [ [[SCEVGEP:%.*]], [[IF_THEN477]] ]100; CHECK-NEXT: [[K_0:%.*]] = load i32, ptr [[LSR_IV]], align 4101; CHECK-NEXT: [[CMP469:%.*]] = icmp slt i32 [[LSR_IV1]], [[N:%.*]]102; CHECK-NEXT: br i1 [[CMP469]], label [[FOR_BODY471:%.*]], label [[FOR_INC498_PREHEADER:%.*]]103; CHECK: for.body471:104; CHECK-NEXT: [[SCEVGEP2:%.*]] = getelementptr i8, ptr [[LSR_IV]], i64 8105; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[SCEVGEP2]], align 4106; CHECK-NEXT: br i1 [[ARG]], label [[IF_THEN477]], label [[FOR_INC498_PREHEADER]]107; CHECK: for.inc498.preheader:108; CHECK-NEXT: br label [[FOR_INC498:%.*]]109; CHECK: if.then477:110; CHECK-NEXT: [[SCEVGEP]] = getelementptr i8, ptr [[LSR_IV]], i64 12111; CHECK-NEXT: [[LSR_IV_NEXT]] = add nuw i32 [[LSR_IV1]], 1112; CHECK-NEXT: br label [[FOR_COND468]]113; CHECK: for.inc498:114; CHECK-NEXT: br label [[FOR_INC498]]115; CHECK: while.end:116; CHECK-NEXT: ret void117;118entry:119 br i1 %arg, label %while.end, label %for.cond468120 121for.cond468: ; preds = %if.then477, %entry122 %indvars.iv1163 = phi i64 [ %indvars.iv.next1164, %if.then477 ], [ 1, %entry ]123 %k.0.in = phi ptr [ %last, %if.then477 ], [ getelementptr inbounds ([5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771], ptr @tags, i64 0, i64 0, i32 2), %entry ]124 %k.0 = load i32, ptr %k.0.in, align 4125 %0 = trunc i64 %indvars.iv1163 to i32126 %cmp469 = icmp slt i32 %0, %n127 br i1 %cmp469, label %for.body471, label %for.inc498128 129for.body471: ; preds = %for.cond468130 %first = getelementptr inbounds [5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771], ptr @tags, i64 0, i64 %indvars.iv1163, i32 1131 %1 = load i32, ptr %first, align 4132 br i1 %arg, label %if.then477, label %for.inc498133 134if.then477: ; preds = %for.body471135 %last = getelementptr inbounds [5000 x %struct.anon.7.91.199.307.415.475.559.643.751.835.943.1003.1111.1219.1351.1375.1399.1435.1471.1483.1519.1531.1651.1771], ptr @tags, i64 0, i64 %indvars.iv1163, i32 2136 %indvars.iv.next1164 = add i64 %indvars.iv1163, 1137 br label %for.cond468138 139for.inc498: ; preds = %for.inc498, %for.body471, %for.cond468140 br label %for.inc498141 142while.end: ; preds = %entry143 ret void144}145 146; PR12898: SCEVExpander crash147; Test redundant phi elimination when the deleted phi's increment is148; itself a phi.149;150define fastcc void @test3(ptr nocapture %u, i1 %arg) nounwind uwtable ssp {151; CHECK-LABEL: @test3(152; CHECK-NEXT: entry:153; CHECK-NEXT: br i1 [[ARG:%.*]], label [[MESHBB1_PREHEADER:%.*]], label [[MESHBB5:%.*]]154; CHECK: meshBB1.preheader:155; CHECK-NEXT: br label [[MESHBB1:%.*]]156; CHECK: for.inc8.us.i:157; CHECK-NEXT: br i1 [[ARG]], label [[MESHBB1_LOOPEXIT:%.*]], label [[MESHBB:%.*]]158; CHECK: for.body3.us.i:159; CHECK-NEXT: [[TMP:%.*]] = phi i32 [ [[LSR_IV_NEXT:%.*]], [[MESHBB]] ], [ [[TMP3:%.*]], [[FOR_BODY3_LR_PH_US_I:%.*]] ]160; CHECK-NEXT: [[SCEVGEP:%.*]] = phi ptr [ [[SCEVGEP1:%.*]], [[MESHBB]] ], [ [[U:%.*]], [[FOR_BODY3_LR_PH_US_I]] ]161; CHECK-NEXT: [[OPQ_SA_CALC12:%.*]] = sub i32 undef, 227162; CHECK-NEXT: [[MUL_I_US_I:%.*]] = mul nsw i32 0, [[TMP]]163; CHECK-NEXT: [[TMP2:%.*]] = load double, ptr [[SCEVGEP]], align 8164; CHECK-NEXT: br i1 [[ARG]], label [[FOR_INC8_US_I:%.*]], label [[MESHBB]]165; CHECK: for.body3.lr.ph.us.i.loopexit:166; CHECK-NEXT: br label [[FOR_BODY3_LR_PH_US_I]]167; CHECK: for.body3.lr.ph.us.i:168; CHECK-NEXT: [[LSR_IV:%.*]] = phi i64 [ undef, [[MESHBB1]] ], [ [[INDVARS_IV8_I_SV_PHI24:%.*]], [[FOR_BODY3_LR_PH_US_I_LOOPEXIT:%.*]] ]169; CHECK-NEXT: [[ARRAYIDX_US_I:%.*]] = getelementptr inbounds double, ptr undef, i64 [[LSR_IV]]170; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[LSR_IV]], 1171; CHECK-NEXT: [[TMP3]] = trunc i64 [[LSR_IV]] to i32172; CHECK-NEXT: br label [[FOR_BODY3_US_I:%.*]]173; CHECK: for.inc8.us.i2:174; CHECK-NEXT: unreachable175; CHECK: eval_At_times_u.exit:176; CHECK-NEXT: ret void177; CHECK: meshBB:178; CHECK-NEXT: [[INDVARS_IV8_I_SV_PHI24]] = phi i64 [ undef, [[FOR_BODY3_US_I]] ], [ [[TMP1]], [[FOR_INC8_US_I]] ]179; CHECK-NEXT: [[MESHSTACKVARIABLE_PHI:%.*]] = phi i32 [ [[OPQ_SA_CALC12]], [[FOR_BODY3_US_I]] ], [ undef, [[FOR_INC8_US_I]] ]180; CHECK-NEXT: [[SCEVGEP1]] = getelementptr i8, ptr [[SCEVGEP]], i64 8181; CHECK-NEXT: [[LSR_IV_NEXT]] = add i32 [[TMP]], 1182; CHECK-NEXT: br i1 [[ARG]], label [[FOR_BODY3_LR_PH_US_I_LOOPEXIT]], label [[FOR_BODY3_US_I]]183; CHECK: meshBB1.loopexit:184; CHECK-NEXT: br label [[MESHBB1]]185; CHECK: meshBB1:186; CHECK-NEXT: br label [[FOR_BODY3_LR_PH_US_I]]187; CHECK: meshBB5:188; CHECK-NEXT: br i1 [[ARG]], label [[EVAL_AT_TIMES_U_EXIT:%.*]], label [[FOR_INC8_US_I2:%.*]]189;190entry:191 br i1 %arg, label %meshBB1, label %meshBB5192 193for.inc8.us.i: ; preds = %for.body3.us.i194 br i1 %arg, label %meshBB1, label %meshBB195 196for.body3.us.i: ; preds = %meshBB, %for.body3.lr.ph.us.i197 %indvars.iv.i.SV.phi = phi i64 [ %indvars.iv.next.i, %meshBB ], [ 0, %for.body3.lr.ph.us.i ]198 %storemerge13.us.i.SV.phi = phi i32 [ 0, %meshBB ], [ 0, %for.body3.lr.ph.us.i ]199 %Opq.sa.calc12 = sub i32 undef, 227200 %0 = add nsw i64 %indvars.iv.i.SV.phi, %indvars.iv8.i.SV.phi26201 %1 = trunc i64 %0 to i32202 %mul.i.us.i = mul nsw i32 0, %1203 %arrayidx5.us.i = getelementptr inbounds double, ptr %u, i64 %indvars.iv.i.SV.phi204 %2 = load double, ptr %arrayidx5.us.i, align 8205 %indvars.iv.next.i = add i64 %indvars.iv.i.SV.phi, 1206 br i1 %arg, label %for.inc8.us.i, label %meshBB207 208for.body3.lr.ph.us.i: ; preds = %meshBB1, %meshBB209 %indvars.iv8.i.SV.phi26 = phi i64 [ undef, %meshBB1 ], [ %indvars.iv8.i.SV.phi24, %meshBB ]210 %arrayidx.us.i = getelementptr inbounds double, ptr undef, i64 %indvars.iv8.i.SV.phi26211 %3 = add i64 %indvars.iv8.i.SV.phi26, 1212 br label %for.body3.us.i213 214for.inc8.us.i2: ; preds = %meshBB5215 unreachable216 217eval_At_times_u.exit: ; preds = %meshBB5218 ret void219 220meshBB: ; preds = %for.body3.us.i, %for.inc8.us.i221 %indvars.iv8.i.SV.phi24 = phi i64 [ undef, %for.body3.us.i ], [ %3, %for.inc8.us.i ]222 %meshStackVariable.phi = phi i32 [ %Opq.sa.calc12, %for.body3.us.i ], [ undef, %for.inc8.us.i ]223 br i1 %arg, label %for.body3.lr.ph.us.i, label %for.body3.us.i224 225meshBB1: ; preds = %for.inc8.us.i, %entry226 br label %for.body3.lr.ph.us.i227 228meshBB5: ; preds = %entry229 br i1 %arg, label %eval_At_times_u.exit, label %for.inc8.us.i2230}231