| ; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py |
| ; RUN: opt < %s -analyze -enable-new-pm=0 -scalar-evolution -scalar-evolution-max-iterations=0 -scalar-evolution-classify-expressions=0 | FileCheck %s |
| ; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-max-iterations=0 -scalar-evolution-classify-expressions=0 2>&1 | FileCheck %s |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| @A = weak global [1000 x i32] zeroinitializer, align 32 |
| |
| define void @PR1101(i32 %N) { |
| ; CHECK-LABEL: 'PR1101' |
| ; CHECK-NEXT: Determining loop execution counts for: @PR1101 |
| ; CHECK-NEXT: Loop %bb3: backedge-taken count is 10000 |
| ; CHECK-NEXT: Loop %bb3: max backedge-taken count is 10000 |
| ; CHECK-NEXT: Loop %bb3: Predicated backedge-taken count is 10000 |
| ; CHECK-NEXT: Predicates: |
| ; CHECK: Loop %bb3: Trip multiple is 10001 |
| ; |
| entry: |
| br label %bb3 |
| |
| bb: ; preds = %bb3 |
| %tmp = getelementptr [1000 x i32], [1000 x i32]* @A, i32 0, i32 %i.0 ; <i32*> [#uses=1] |
| store i32 123, i32* %tmp |
| %tmp2 = add i32 %i.0, 1 ; <i32> [#uses=1] |
| br label %bb3 |
| |
| bb3: ; preds = %bb, %entry |
| %i.0 = phi i32 [ 0, %entry ], [ %tmp2, %bb ] ; <i32> [#uses=3] |
| %tmp3 = icmp sle i32 %i.0, 9999 ; <i1> [#uses=1] |
| br i1 %tmp3, label %bb, label %bb5 |
| |
| bb5: ; preds = %bb3 |
| br label %return |
| |
| return: ; preds = %bb5 |
| ret void |
| } |
| |
| define i32 @PR22795() { |
| ; CHECK-LABEL: 'PR22795' |
| ; CHECK-NEXT: Determining loop execution counts for: @PR22795 |
| ; CHECK-NEXT: Loop %preheader: backedge-taken count is 7 |
| ; CHECK-NEXT: Loop %preheader: max backedge-taken count is 7 |
| ; CHECK-NEXT: Loop %preheader: Predicated backedge-taken count is 7 |
| ; CHECK-NEXT: Predicates: |
| ; CHECK: Loop %preheader: Trip multiple is 8 |
| ; |
| entry: |
| %bins = alloca [16 x i64], align 16 |
| %0 = bitcast [16 x i64]* %bins to i8* |
| call void @llvm.memset.p0i8.i64(i8* align 16 %0, i8 0, i64 128, i1 false) |
| br label %preheader |
| |
| preheader: ; preds = %for.inc.1, %entry |
| %v11 = phi i64 [ 0, %entry ], [ %next12.1, %for.inc.1 ] |
| %iv = phi i32 [ -1, %entry ], [ %next.1, %for.inc.1 ] |
| %cmp = icmp sgt i64 %v11, 0 |
| br i1 %cmp, label %for.body, label %for.inc |
| |
| for.body: ; preds = %preheader |
| %zext = zext i32 %iv to i64 |
| %arrayidx = getelementptr [16 x i64], [16 x i64]* %bins, i64 0, i64 %v11 |
| %loaded = load i64, i64* %arrayidx, align 8 |
| %add = add i64 %loaded, 1 |
| %add2 = add i64 %add, %zext |
| store i64 %add2, i64* %arrayidx, align 8 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %preheader |
| %next12 = add nuw nsw i64 %v11, 1 |
| %next = add nsw i32 %iv, 1 |
| br i1 true, label %for.body.1, label %for.inc.1 |
| |
| end: ; preds = %for.inc.1 |
| %arrayidx8 = getelementptr [16 x i64], [16 x i64]* %bins, i64 0, i64 2 |
| %load = load i64, i64* %arrayidx8, align 16 |
| %shr4 = lshr i64 %load, 32 |
| %conv = trunc i64 %shr4 to i32 |
| ret i32 %conv |
| |
| for.body.1: ; preds = %for.inc |
| %zext.1 = zext i32 %next to i64 |
| %arrayidx.1 = getelementptr [16 x i64], [16 x i64]* %bins, i64 0, i64 %next12 |
| %loaded.1 = load i64, i64* %arrayidx.1, align 8 |
| %add.1 = add i64 %loaded.1, 1 |
| %add2.1 = add i64 %add.1, %zext.1 |
| store i64 %add2.1, i64* %arrayidx.1, align 8 |
| br label %for.inc.1 |
| |
| for.inc.1: ; preds = %for.body.1, %for.inc |
| %next12.1 = add nuw nsw i64 %next12, 1 |
| %next.1 = add nuw nsw i32 %next, 1 |
| %exitcond.1 = icmp eq i64 %next12.1, 16 |
| br i1 %exitcond.1, label %end, label %preheader |
| } |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1) #0 |
| |
| declare void @may_exit() nounwind |
| |
| define void @pr28012(i32 %n) { |
| ; CHECK-LABEL: 'pr28012' |
| ; CHECK-NEXT: Determining loop execution counts for: @pr28012 |
| ; CHECK-NEXT: Loop %loop: backedge-taken count is -1431655751 |
| ; CHECK-NEXT: Loop %loop: max backedge-taken count is -1431655751 |
| ; CHECK-NEXT: Loop %loop: Predicated backedge-taken count is -1431655751 |
| ; CHECK-NEXT: Predicates: |
| ; CHECK: Loop %loop: Trip multiple is 2863311546 |
| ; |
| entry: |
| br label %loop |
| |
| loop: |
| %iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ] |
| %iv.inc = add nsw i32 %iv, 3 |
| call void @may_exit() |
| %becond = icmp ne i32 %iv.inc, 46 |
| br i1 %becond, label %loop, label %leave |
| |
| leave: |
| ret void |
| } |