8b5b294ec2
When printing the result of SCEV's analysis, we can avoid printing the predicated backedge taken count and the predicates if the predicates are empty and no new information is provided. This helps to reduce the verbosity of the output.
74 lines
3.9 KiB
LLVM
74 lines
3.9 KiB
LLVM
; 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: [4,-11) S: [-9223372036854775808,9223372036854775805)
|
|
; CHECK-NEXT: %0 = bitcast ptr %storage to ptr
|
|
; CHECK-NEXT: --> %storage U: [4,-11) 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 = sdiv i32 %i.0, 2
|
|
; CHECK-NEXT: --> ({0,+,1}<nuw><nsw><%for.cond> /u 2) U: [0,1073741824) S: [0,1073741824) Exits: (%width /u 2) LoopDispositions: { %for.cond: Computable }
|
|
; CHECK-NEXT: %idxprom = sext i32 %rem to i64
|
|
; CHECK-NEXT: --> ({0,+,1}<nuw><nsw><%for.cond> /u 2) U: [0,2147483648) S: [0,2147483648) Exits: ((zext i32 %width to i64) /u 2) LoopDispositions: { %for.cond: Computable }
|
|
; CHECK-NEXT: %arrayidx = getelementptr inbounds [2 x i32], ptr %storage, i64 0, i64 %idxprom
|
|
; CHECK-NEXT: --> ((4 * ({0,+,1}<nuw><nsw><%for.cond> /u 2))<nuw><nsw> + %storage) U: [0,-3) S: [-9223372036854775808,9223372036854775805) Exits: ((4 * ((zext i32 %width to i64) /u 2))<nuw><nsw> + %storage) LoopDispositions: { %for.cond: Computable }
|
|
; CHECK-NEXT: %1 = load i32, ptr %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, ptr %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: constant max backedge-taken count is i32 -1
|
|
; CHECK-NEXT: Loop %for.cond: symbolic max backedge-taken count is %width
|
|
; CHECK-NEXT: Loop %for.cond: Trip multiple is 1
|
|
;
|
|
entry:
|
|
%storage = alloca [2 x i32], align 4
|
|
%0 = bitcast ptr %storage to ptr
|
|
call void @llvm.lifetime.start.p0(i64 8, ptr %0) #4
|
|
call void @llvm.memset.p0.i64(ptr 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.p0(i64 8, ptr %0) #4
|
|
ret void
|
|
|
|
for.body:
|
|
%rem = sdiv i32 %i.0, 2
|
|
%idxprom = sext i32 %rem to i64
|
|
%arrayidx = getelementptr inbounds [2 x i32], ptr %storage, i64 0, i64 %idxprom
|
|
%1 = load i32, ptr %arrayidx, align 4
|
|
%call = call i32 @_Z3adji(i32 %1)
|
|
%2 = load i32, ptr %arrayidx, align 4
|
|
%add = add nsw i32 %2, %call
|
|
store i32 %add, ptr %arrayidx, align 4
|
|
%inc = add nsw i32 %i.0, 1
|
|
br label %for.cond
|
|
}
|
|
|
|
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1
|
|
|
|
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2
|
|
|
|
declare dso_local i32 @_Z3adji(i32) local_unnamed_addr #3
|
|
|
|
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1
|