80 lines
4.7 KiB
LLVM
80 lines
4.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; PR34438
|
|
; Loop has a short trip count of 8 iterations. It should be vectorized because no runtime checks or tail loop are necessary.
|
|
; Two cases tested AVX (MaxVF=8 = TripCount) and AVX512 (MaxVF=16 > TripCount)
|
|
|
|
; RUN: opt < %s -loop-vectorize -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx -S | FileCheck %s
|
|
; RUN: opt < %s -loop-vectorize -mtriple=x86_64-apple-macosx10.8.0 -mcpu=skylake-avx512 -S | FileCheck %s
|
|
|
|
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-apple-macosx10.8.0"
|
|
|
|
define void @small_tc(float* noalias nocapture %A, float* noalias nocapture readonly %B) {
|
|
; CHECK-LABEL: @small_tc(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
|
|
; CHECK: vector.ph:
|
|
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
|
|
; CHECK: vector.body:
|
|
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <8 x i64> poison, i64 [[INDEX]], i32 0
|
|
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <8 x i64> [[BROADCAST_SPLATINSERT]], <8 x i64> poison, <8 x i32> zeroinitializer
|
|
; CHECK-NEXT: [[INDUCTION:%.*]] = add <8 x i64> [[BROADCAST_SPLAT]], <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7>
|
|
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
|
|
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds float, float* [[B:%.*]], i64 [[TMP0]]
|
|
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds float, float* [[TMP1]], i32 0
|
|
; CHECK-NEXT: [[TMP3:%.*]] = bitcast float* [[TMP2]] to <8 x float>*
|
|
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <8 x float>, <8 x float>* [[TMP3]], align 4, !llvm.access.group !0
|
|
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[TMP0]]
|
|
; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds float, float* [[TMP4]], i32 0
|
|
; CHECK-NEXT: [[TMP6:%.*]] = bitcast float* [[TMP5]] to <8 x float>*
|
|
; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <8 x float>, <8 x float>* [[TMP6]], align 4, !llvm.access.group !0
|
|
; CHECK-NEXT: [[TMP7:%.*]] = fadd fast <8 x float> [[WIDE_LOAD]], [[WIDE_LOAD1]]
|
|
; CHECK-NEXT: [[TMP8:%.*]] = bitcast float* [[TMP5]] to <8 x float>*
|
|
; CHECK-NEXT: store <8 x float> [[TMP7]], <8 x float>* [[TMP8]], align 4, !llvm.access.group !0
|
|
; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 8
|
|
; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT]], 8
|
|
; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP1:!llvm.loop !.*]]
|
|
; CHECK: middle.block:
|
|
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 8, 8
|
|
; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END:%.*]], label [[SCALAR_PH]]
|
|
; CHECK: scalar.ph:
|
|
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 8, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
|
|
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[B]], i64 [[INDVARS_IV]]
|
|
; CHECK-NEXT: [[TMP10:%.*]] = load float, float* [[ARRAYIDX]], align 4, !llvm.access.group !0
|
|
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV]]
|
|
; CHECK-NEXT: [[TMP11:%.*]] = load float, float* [[ARRAYIDX2]], align 4, !llvm.access.group !0
|
|
; CHECK-NEXT: [[ADD:%.*]] = fadd fast float [[TMP10]], [[TMP11]]
|
|
; CHECK-NEXT: store float [[ADD]], float* [[ARRAYIDX2]], align 4, !llvm.access.group !0
|
|
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
|
|
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 8
|
|
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END]], label [[FOR_BODY]], [[LOOP3:!llvm.loop !.*]]
|
|
; CHECK: for.end:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
|
|
%arrayidx = getelementptr inbounds float, float* %B, i64 %indvars.iv
|
|
%0 = load float, float* %arrayidx, align 4, !llvm.access.group !5
|
|
%arrayidx2 = getelementptr inbounds float, float* %A, i64 %indvars.iv
|
|
%1 = load float, float* %arrayidx2, align 4, !llvm.access.group !5
|
|
%add = fadd fast float %0, %1
|
|
store float %add, float* %arrayidx2, align 4, !llvm.access.group !5
|
|
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
|
|
%exitcond = icmp eq i64 %indvars.iv.next, 8
|
|
br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !4
|
|
|
|
for.end:
|
|
ret void
|
|
}
|
|
|
|
!3 = !{!3, !{!"llvm.loop.parallel_accesses", !5}}
|
|
!4 = !{!4}
|
|
!5 = distinct !{}
|