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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -S -passes=loop-rotate < %s -verify-loop-info -verify-dom-info -verify-memoryssa | FileCheck %s3 4target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"5target triple = "thumbv8m.base-arm-none-eabi"6 7%struct.List = type { ptr, i32 }8 9define void @list_add(ptr nocapture %list, ptr %data) {10; CHECK-LABEL: @list_add(11; CHECK-NEXT: entry:12; CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[LIST:%.*]], align 413; CHECK-NEXT: [[VAL2:%.*]] = getelementptr inbounds [[STRUCT_LIST:%.*]], ptr [[TMP0]], i32 0, i32 114; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[VAL2]], align 415; CHECK-NEXT: [[VAL1:%.*]] = getelementptr inbounds [[STRUCT_LIST]], ptr [[DATA:%.*]], i32 0, i32 116; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[VAL1]], align 417; CHECK-NEXT: [[CMP3:%.*]] = icmp slt i32 [[TMP1]], [[TMP2]]18; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN_LR_PH:%.*]], label [[IF_ELSE6:%.*]]19; CHECK: if.then.lr.ph:20; CHECK-NEXT: br label [[IF_THEN:%.*]]21; CHECK: for.cond:22; CHECK-NEXT: [[CURR_0:%.*]] = phi ptr [ [[TMP5:%.*]], [[IF_THEN]] ]23; CHECK-NEXT: [[PREV_0:%.*]] = phi ptr [ [[CURR_04:%.*]], [[IF_THEN]] ]24; CHECK-NEXT: [[VAL:%.*]] = getelementptr inbounds [[STRUCT_LIST]], ptr [[CURR_0]], i32 0, i32 125; CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[VAL]], align 426; CHECK-NEXT: [[TMP4:%.*]] = load i32, ptr [[VAL1]], align 427; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[TMP3]], [[TMP4]]28; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN]], label [[FOR_COND_IF_ELSE6_CRIT_EDGE:%.*]]29; CHECK: if.then:30; CHECK-NEXT: [[CURR_04]] = phi ptr [ [[TMP0]], [[IF_THEN_LR_PH]] ], [ [[CURR_0]], [[FOR_COND:%.*]] ]31; CHECK-NEXT: [[TMP5]] = load ptr, ptr [[CURR_04]], align 432; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq ptr [[TMP5]], null33; CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_ELSE:%.*]], label [[FOR_COND]]34; CHECK: if.else:35; CHECK-NEXT: [[NEXT_LCSSA:%.*]] = phi ptr [ [[CURR_04]], [[IF_THEN]] ]36; CHECK-NEXT: store ptr [[DATA]], ptr [[NEXT_LCSSA]], align 437; CHECK-NEXT: store ptr null, ptr [[DATA]], align 438; CHECK-NEXT: br label [[FOR_END:%.*]]39; CHECK: for.cond.if.else6_crit_edge:40; CHECK-NEXT: [[SPLIT:%.*]] = phi ptr [ [[PREV_0]], [[FOR_COND]] ]41; CHECK-NEXT: br label [[IF_ELSE6]]42; CHECK: if.else6:43; CHECK-NEXT: [[PREV_0_LCSSA:%.*]] = phi ptr [ [[SPLIT]], [[FOR_COND_IF_ELSE6_CRIT_EDGE]] ], [ null, [[ENTRY:%.*]] ]44; CHECK-NEXT: [[TOBOOL7:%.*]] = icmp eq ptr [[PREV_0_LCSSA]], null45; CHECK-NEXT: br i1 [[TOBOOL7]], label [[IF_ELSE12:%.*]], label [[IF_THEN8:%.*]]46; CHECK: if.then8:47; CHECK-NEXT: [[TMP7:%.*]] = load i32, ptr [[PREV_0_LCSSA]], align 448; CHECK-NEXT: store i32 [[TMP7]], ptr [[DATA]], align 449; CHECK-NEXT: store ptr [[DATA]], ptr [[PREV_0_LCSSA]], align 450; CHECK-NEXT: br label [[FOR_END]]51; CHECK: if.else12:52; CHECK-NEXT: [[TMP10:%.*]] = load i32, ptr [[LIST]], align 453; CHECK-NEXT: store i32 [[TMP10]], ptr [[DATA]], align 454; CHECK-NEXT: store ptr [[DATA]], ptr [[LIST]], align 455; CHECK-NEXT: br label [[FOR_END]]56; CHECK: for.end:57; CHECK-NEXT: ret void58;59entry:60 %0 = load ptr, ptr %list, align 461 br label %for.cond62 63for.cond: ; preds = %if.then, %entry64 %curr.0 = phi ptr [ %0, %entry ], [ %3, %if.then ]65 %prev.0 = phi ptr [ null, %entry ], [ %curr.0, %if.then ]66 %val = getelementptr inbounds %struct.List, ptr %curr.0, i32 0, i32 167 %1 = load i32, ptr %val, align 468 %val1 = getelementptr inbounds %struct.List, ptr %data, i32 0, i32 169 %2 = load i32, ptr %val1, align 470 %cmp = icmp slt i32 %1, %271 br i1 %cmp, label %if.then, label %if.else672 73if.then: ; preds = %for.cond74 %3 = load ptr, ptr %curr.0, align 475 %tobool = icmp eq ptr %3, null76 br i1 %tobool, label %if.else, label %for.cond77 78if.else: ; preds = %if.then79 %next.lcssa = phi ptr [ %curr.0, %if.then ]80 store ptr %data, ptr %next.lcssa, align 481 store ptr null, ptr %data, align 482 br label %for.end83 84if.else6: ; preds = %for.cond85 %prev.0.lcssa = phi ptr [ %prev.0, %for.cond ]86 %tobool7 = icmp eq ptr %prev.0.lcssa, null87 br i1 %tobool7, label %if.else12, label %if.then888 89if.then8: ; preds = %if.else690 %4 = load i32, ptr %prev.0.lcssa, align 491 store i32 %4, ptr %data, align 492 store ptr %data, ptr %prev.0.lcssa, align 493 br label %for.end94 95if.else12: ; preds = %if.else696 %5 = load i32, ptr %list, align 497 store i32 %5, ptr %data, align 498 store ptr %data, ptr %list, align 499 br label %for.end100 101for.end: ; preds = %if.else12, %if.then8, %if.else102 ret void103}104 105define i32 @test2(ptr %l) {106; CHECK-LABEL: @test2(107; CHECK-NEXT: entry:108; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[L:%.*]], align 4109; CHECK-NEXT: [[TOBOOL2:%.*]] = icmp eq i32 [[TMP0]], 0110; CHECK-NEXT: br i1 [[TOBOOL2]], label [[CLEANUP:%.*]], label [[DO_COND_LR_PH:%.*]]111; CHECK: do.cond.lr.ph:112; CHECK-NEXT: br label [[DO_COND:%.*]]113; CHECK: do.body:114; CHECK-NEXT: [[A_0:%.*]] = phi i32 [ [[REM:%.*]], [[DO_COND]] ]115; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[L]], align 4116; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[TMP1]], 0117; CHECK-NEXT: br i1 [[TOBOOL]], label [[DO_BODY_CLEANUP_CRIT_EDGE:%.*]], label [[DO_COND]]118; CHECK: do.body.cleanup_crit_edge:119; CHECK-NEXT: [[SPLIT:%.*]] = phi i32 [ [[A_0]], [[DO_BODY:%.*]] ]120; CHECK-NEXT: br label [[CLEANUP]]121; CHECK: cleanup:122; CHECK-NEXT: [[A_0_LCSSA:%.*]] = phi i32 [ [[SPLIT]], [[DO_BODY_CLEANUP_CRIT_EDGE]] ], [ 100, [[ENTRY:%.*]] ]123; CHECK-NEXT: store i32 10, ptr [[L]], align 4124; CHECK-NEXT: br label [[CLEANUP2:%.*]]125; CHECK: do.cond:126; CHECK-NEXT: [[TMP2:%.*]] = phi i32 [ [[TMP0]], [[DO_COND_LR_PH]] ], [ [[TMP1]], [[DO_BODY]] ]127; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], 13128; CHECK-NEXT: [[REM]] = srem i32 [[MUL]], 27129; CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[L]], align 4130; CHECK-NEXT: [[TOBOOL1:%.*]] = icmp eq i32 [[TMP3]], 0131; CHECK-NEXT: br i1 [[TOBOOL1]], label [[CLEANUP2_LOOPEXIT:%.*]], label [[DO_BODY]]132; CHECK: cleanup2.loopexit:133; CHECK-NEXT: br label [[CLEANUP2]]134; CHECK: cleanup2:135; CHECK-NEXT: [[RETVAL_2:%.*]] = phi i32 [ [[A_0_LCSSA]], [[CLEANUP]] ], [ 0, [[CLEANUP2_LOOPEXIT]] ]136; CHECK-NEXT: ret i32 [[RETVAL_2]]137;138entry:139 br label %do.body140 141do.body: ; preds = %do.cond, %entry142 %a.0 = phi i32 [ 100, %entry ], [ %rem, %do.cond ]143 %0 = load i32, ptr %l, align 4144 %tobool = icmp eq i32 %0, 0145 br i1 %tobool, label %cleanup, label %do.cond146 147cleanup: ; preds = %do.body148 %a.0.lcssa = phi i32 [ %a.0, %do.body ]149 store i32 10, ptr %l, align 4150 br label %cleanup2151 152do.cond: ; preds = %do.body153 %mul = mul nsw i32 %0, 13154 %rem = srem i32 %mul, 27155 %1 = load i32, ptr %l, align 4156 %tobool1 = icmp eq i32 %1, 0157 br i1 %tobool1, label %cleanup2.loopexit, label %do.body158 159cleanup2.loopexit: ; preds = %do.cond160 br label %cleanup2161 162cleanup2: ; preds = %cleanup2.loopexit, %cleanup163 %retval.2 = phi i32 [ %a.0.lcssa, %cleanup ], [ 0, %cleanup2.loopexit ]164 ret i32 %retval.2165}166 167define i32 @no_rotate(ptr %l) {168; CHECK-LABEL: @no_rotate(169; CHECK-NEXT: entry:170; CHECK-NEXT: br label [[DO_BODY:%.*]]171; CHECK: do.body:172; CHECK-NEXT: [[A_0:%.*]] = phi i32 [ 100, [[ENTRY:%.*]] ], [ [[REM:%.*]], [[DO_COND:%.*]] ]173; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[L:%.*]], align 4174; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[TMP0]], 0175; CHECK-NEXT: br i1 [[TOBOOL]], label [[CLEANUP:%.*]], label [[DO_COND]]176; CHECK: cleanup:177; CHECK-NEXT: [[A_0_LCSSA:%.*]] = phi i32 [ [[A_0]], [[DO_BODY]] ]178; CHECK-NEXT: store i32 10, ptr [[L]], align 4179; CHECK-NEXT: br label [[CLEANUP2:%.*]]180; CHECK: do.cond:181; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[A_0]], 13182; CHECK-NEXT: [[REM]] = srem i32 [[MUL]], 27183; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[L]], align 4184; CHECK-NEXT: [[TOBOOL1:%.*]] = icmp eq i32 [[TMP1]], 0185; CHECK-NEXT: br i1 [[TOBOOL1]], label [[CLEANUP2_LOOPEXIT:%.*]], label [[DO_BODY]]186; CHECK: cleanup2.loopexit:187; CHECK-NEXT: br label [[CLEANUP2]]188; CHECK: cleanup2:189; CHECK-NEXT: [[RETVAL_2:%.*]] = phi i32 [ [[A_0_LCSSA]], [[CLEANUP]] ], [ 0, [[CLEANUP2_LOOPEXIT]] ]190; CHECK-NEXT: ret i32 [[RETVAL_2]]191;192entry:193 br label %do.body194 195do.body: ; preds = %do.cond, %entry196 %a.0 = phi i32 [ 100, %entry ], [ %rem, %do.cond ]197 %0 = load i32, ptr %l, align 4198 %tobool = icmp eq i32 %0, 0199 br i1 %tobool, label %cleanup, label %do.cond200 201cleanup: ; preds = %do.body202 %a.0.lcssa = phi i32 [ %a.0, %do.body ]203 store i32 10, ptr %l, align 4204 br label %cleanup2205 206do.cond: ; preds = %do.body207 %mul = mul nsw i32 %a.0, 13208 %rem = srem i32 %mul, 27209 %1 = load i32, ptr %l, align 4210 %tobool1 = icmp eq i32 %1, 0211 br i1 %tobool1, label %cleanup2.loopexit, label %do.body212 213cleanup2.loopexit: ; preds = %do.cond214 br label %cleanup2215 216cleanup2: ; preds = %cleanup2.loopexit, %cleanup217 %retval.2 = phi i32 [ %a.0.lcssa, %cleanup ], [ 0, %cleanup2.loopexit ]218 ret i32 %retval.2219}220 221