93 lines
2.7 KiB
LLVM
93 lines
2.7 KiB
LLVM
; RUN: opt -loops -analyze -enable-new-pm=0 < %s | FileCheck %s
|
|
; RUN: opt -passes='print<loops>' -disable-output %s 2>&1 | FileCheck %s
|
|
;
|
|
; void func(long n, double A[static const restrict 4*n], double B[static const restrict 4*n]) {
|
|
; for (long i = 0; i < n; i += 1)
|
|
; for (long j = 0; j < n; j += 1)
|
|
; for (long k = 0; k < n; k += 1)
|
|
; for (long l = 0; l < n; l += 1) {
|
|
; A[i + j + k + l] = 21;
|
|
; B[i + j + k + l] = 42;
|
|
; }
|
|
; }
|
|
;
|
|
; Check that isAnnotatedParallel is working as expected.
|
|
;
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
|
|
define void @func(i64 %n, double* noalias nonnull %A, double* noalias nonnull %B) {
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%i.0 = phi i64 [ 0, %entry ], [ %add28, %for.inc27 ]
|
|
%cmp = icmp slt i64 %i.0, %n
|
|
br i1 %cmp, label %for.cond2, label %for.end29
|
|
|
|
for.cond2:
|
|
%j.0 = phi i64 [ %add25, %for.inc24 ], [ 0, %for.cond ]
|
|
%cmp3 = icmp slt i64 %j.0, %n
|
|
br i1 %cmp3, label %for.cond6, label %for.inc27
|
|
|
|
for.cond6:
|
|
%k.0 = phi i64 [ %add22, %for.inc21 ], [ 0, %for.cond2 ]
|
|
%cmp7 = icmp slt i64 %k.0, %n
|
|
br i1 %cmp7, label %for.cond10, label %for.inc24
|
|
|
|
for.cond10:
|
|
%l.0 = phi i64 [ %add20, %for.body13 ], [ 0, %for.cond6 ]
|
|
%cmp11 = icmp slt i64 %l.0, %n
|
|
br i1 %cmp11, label %for.body13, label %for.inc21
|
|
|
|
for.body13:
|
|
%add = add nuw nsw i64 %i.0, %j.0
|
|
%add14 = add nuw nsw i64 %add, %k.0
|
|
%add15 = add nuw nsw i64 %add14, %l.0
|
|
%arrayidx = getelementptr inbounds double, double* %A, i64 %add15
|
|
store double 2.100000e+01, double* %arrayidx, align 8, !llvm.access.group !5
|
|
%add16 = add nuw nsw i64 %i.0, %j.0
|
|
%add17 = add nuw nsw i64 %add16, %k.0
|
|
%add18 = add nuw nsw i64 %add17, %l.0
|
|
%arrayidx19 = getelementptr inbounds double, double* %B, i64 %add18
|
|
store double 4.200000e+01, double* %arrayidx19, align 8, !llvm.access.group !6
|
|
%add20 = add nuw nsw i64 %l.0, 1
|
|
br label %for.cond10, !llvm.loop !11
|
|
|
|
for.inc21:
|
|
%add22 = add nuw nsw i64 %k.0, 1
|
|
br label %for.cond6, !llvm.loop !14
|
|
|
|
for.inc24:
|
|
%add25 = add nuw nsw i64 %j.0, 1
|
|
br label %for.cond2, !llvm.loop !16
|
|
|
|
for.inc27:
|
|
%add28 = add nuw nsw i64 %i.0, 1
|
|
br label %for.cond, !llvm.loop !18
|
|
|
|
for.end29:
|
|
ret void
|
|
}
|
|
|
|
; access groups
|
|
!7 = distinct !{}
|
|
!8 = distinct !{}
|
|
!10 = distinct !{}
|
|
|
|
; access group lists
|
|
!5 = !{!7, !10}
|
|
!6 = !{!7, !8, !10}
|
|
|
|
; LoopIDs
|
|
!11 = distinct !{!11, !{!"llvm.loop.parallel_accesses", !10}}
|
|
!14 = distinct !{!14, !{!"llvm.loop.parallel_accesses", !8, !10}}
|
|
!16 = distinct !{!16, !{!"llvm.loop.parallel_accesses", !8}}
|
|
!18 = distinct !{!18, !{!"llvm.loop.parallel_accesses", !7}}
|
|
|
|
|
|
; CHECK: Parallel Loop at depth 1
|
|
; CHECK-NOT: Parallel
|
|
; CHECK: Loop at depth 2
|
|
; CHECK: Parallel Loop
|
|
; CHECK: Parallel Loop
|