| ; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py |
| ; RUN: opt < %s "-passes=print<scalar-evolution>" -disable-output 2>&1 | FileCheck %s |
| |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define dso_local void @_Z4loopi(i32 %width) local_unnamed_addr #0 { |
| ; CHECK-LABEL: '_Z4loopi' |
| ; CHECK-NEXT: Classifying expressions for: @_Z4loopi |
| ; CHECK-NEXT: %storage = alloca [2 x i32], align 4 |
| ; CHECK-NEXT: --> %storage U: [0,-3) S: [-9223372036854775808,9223372036854775805) |
| ; CHECK-NEXT: %0 = bitcast [2 x i32]* %storage to i8* |
| ; CHECK-NEXT: --> %storage U: [0,-3) S: [-9223372036854775808,9223372036854775805) |
| ; CHECK-NEXT: %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ] |
| ; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.cond> U: [0,-2147483648) S: [0,-2147483648) Exits: %width LoopDispositions: { %for.cond: Computable } |
| ; CHECK-NEXT: %rem = srem i32 %i.0, 2 |
| ; CHECK-NEXT: --> (zext i1 {false,+,true}<%for.cond> to i32) U: [0,2) S: [0,2) Exits: (zext i1 (trunc i32 %width to i1) to i32) LoopDispositions: { %for.cond: Computable } |
| ; CHECK-NEXT: %idxprom = sext i32 %rem to i64 |
| ; CHECK-NEXT: --> (zext i1 {false,+,true}<%for.cond> to i64) U: [0,2) S: [0,2) Exits: (zext i1 (trunc i32 %width to i1) to i64) LoopDispositions: { %for.cond: Computable } |
| ; CHECK-NEXT: %arrayidx = getelementptr inbounds [2 x i32], [2 x i32]* %storage, i64 0, i64 %idxprom |
| ; CHECK-NEXT: --> ((4 * (zext i1 {false,+,true}<%for.cond> to i64))<nuw><nsw> + %storage) U: [0,-3) S: [-9223372036854775808,9223372036854775805) Exits: ((4 * (zext i1 (trunc i32 %width to i1) to i64))<nuw><nsw> + %storage) LoopDispositions: { %for.cond: Computable } |
| ; CHECK-NEXT: %1 = load i32, i32* %arrayidx, align 4 |
| ; CHECK-NEXT: --> %1 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %for.cond: Variant } |
| ; CHECK-NEXT: %call = call i32 @_Z3adji(i32 %1) |
| ; CHECK-NEXT: --> %call U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %for.cond: Variant } |
| ; CHECK-NEXT: %2 = load i32, i32* %arrayidx, align 4 |
| ; CHECK-NEXT: --> %2 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %for.cond: Variant } |
| ; CHECK-NEXT: %add = add nsw i32 %2, %call |
| ; CHECK-NEXT: --> (%2 + %call) U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %for.cond: Variant } |
| ; CHECK-NEXT: %inc = add nsw i32 %i.0, 1 |
| ; CHECK-NEXT: --> {1,+,1}<nuw><%for.cond> U: [1,0) S: [1,0) Exits: (1 + %width) LoopDispositions: { %for.cond: Computable } |
| ; CHECK-NEXT: Determining loop execution counts for: @_Z4loopi |
| ; CHECK-NEXT: Loop %for.cond: backedge-taken count is %width |
| ; CHECK-NEXT: Loop %for.cond: max backedge-taken count is -1 |
| ; CHECK-NEXT: Loop %for.cond: Predicated backedge-taken count is %width |
| ; CHECK-NEXT: Predicates: |
| ; CHECK: Loop %for.cond: Trip multiple is 1 |
| ; |
| entry: |
| %storage = alloca [2 x i32], align 4 |
| %0 = bitcast [2 x i32]* %storage to i8* |
| call void @llvm.lifetime.start.p0i8(i64 8, i8* %0) #4 |
| call void @llvm.memset.p0i8.i64(i8* align 4 %0, i8 0, i64 8, i1 false) |
| br label %for.cond |
| |
| for.cond: |
| %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ] |
| %cmp = icmp ne i32 %i.0, %width |
| br i1 %cmp, label %for.body, label %for.cond.cleanup |
| |
| for.cond.cleanup: |
| call void @llvm.lifetime.end.p0i8(i64 8, i8* %0) #4 |
| ret void |
| |
| for.body: |
| %rem = srem i32 %i.0, 2 |
| %idxprom = sext i32 %rem to i64 |
| %arrayidx = getelementptr inbounds [2 x i32], [2 x i32]* %storage, i64 0, i64 %idxprom |
| %1 = load i32, i32* %arrayidx, align 4 |
| %call = call i32 @_Z3adji(i32 %1) |
| %2 = load i32, i32* %arrayidx, align 4 |
| %add = add nsw i32 %2, %call |
| store i32 %add, i32* %arrayidx, align 4 |
| %inc = add nsw i32 %i.0, 1 |
| br label %for.cond |
| } |
| |
| declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #1 |
| |
| declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1 immarg) #2 |
| |
| declare dso_local i32 @_Z3adji(i32) local_unnamed_addr #3 |
| |
| declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1 |