1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 2; RUN: opt < %s -loop-reduce -gvn -S | FileCheck %s 3 4target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64" 5 6; LoopStrengthReduce should reuse %mul as the stride. 7define void @_Z3fooPfll(ptr nocapture readonly %input, i64 %n, i64 %s) { 8; CHECK-LABEL: define void @_Z3fooPfll 9; CHECK-SAME: (ptr readonly captures(none) [[INPUT:%.*]], i64 [[N:%.*]], i64 [[S:%.*]]) { 10; CHECK-NEXT: entry: 11; CHECK-NEXT: [[MUL:%.*]] = shl i64 [[S]], 2 12; CHECK-NEXT: tail call void @_Z3bazl(i64 [[MUL]]) 13; CHECK-NEXT: [[CMP_5:%.*]] = icmp sgt i64 [[N]], 0 14; CHECK-NEXT: br i1 [[CMP_5]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]] 15; CHECK: for.body.preheader: 16; CHECK-NEXT: br label [[FOR_BODY:%.*]] 17; CHECK: for.cond.cleanup.loopexit: 18; CHECK-NEXT: br label [[FOR_COND_CLEANUP]] 19; CHECK: for.cond.cleanup: 20; CHECK-NEXT: ret void 21; CHECK: for.body: 22; CHECK-NEXT: [[LSR_IV:%.*]] = phi ptr [ [[SCEVGEP:%.*]], [[FOR_BODY]] ], [ [[INPUT]], [[FOR_BODY_PREHEADER]] ] 23; CHECK-NEXT: [[I_06:%.*]] = phi i64 [ [[ADD:%.*]], [[FOR_BODY]] ], [ 0, [[FOR_BODY_PREHEADER]] ] 24; CHECK-NEXT: [[TMP0:%.*]] = load float, ptr [[LSR_IV]], align 4 25; CHECK-NEXT: tail call void @_Z3barf(float [[TMP0]]) 26; CHECK-NEXT: [[ADD]] = add i64 [[I_06]], [[S]] 27; CHECK-NEXT: [[SCEVGEP]] = getelementptr i8, ptr [[LSR_IV]], i64 [[MUL]] 28; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[ADD]], [[N]] 29; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]] 30; 31entry: 32 %mul = shl nsw i64 %s, 2 33 tail call void @_Z3bazl(i64 %mul) #2 34 %cmp.5 = icmp sgt i64 %n, 0 35 br i1 %cmp.5, label %for.body.preheader, label %for.cond.cleanup 36 37for.body.preheader: ; preds = %entry 38 br label %for.body 39 40for.cond.cleanup.loopexit: ; preds = %for.body 41 br label %for.cond.cleanup 42 43for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry 44 ret void 45 46for.body: ; preds = %for.body.preheader, %for.body 47 %i.06 = phi i64 [ %add, %for.body ], [ 0, %for.body.preheader ] 48 %arrayidx = getelementptr inbounds float, ptr %input, i64 %i.06 49 %0 = load float, ptr %arrayidx, align 4 50 tail call void @_Z3barf(float %0) #2 51 %add = add nsw i64 %i.06, %s 52 %cmp = icmp slt i64 %add, %n 53 br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit 54} 55 56declare void @_Z3bazl(i64) 57 58declare void @_Z3barf(float) 59