| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -O2 -S < %s | FileCheck %s |
| ; RUN: opt -passes='default<O2>' -S < %s | FileCheck %s |
| |
| |
| target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.15.0" |
| |
| ; https://llvm.org/PR49055 |
| ; |
| ; void loop_or(const unsigned char* __restrict pIn, unsigned int* __restrict pOut, int s) { |
| ; for (int i = 0; i < s; i++) { |
| ; unsigned int pixelChar = pIn[i]; |
| ; unsigned int pixel = pixelChar | (pixelChar << 8) | (pixelChar << 16) | (255 << 24); |
| ; pOut[i] = pixel; |
| ; } |
| ; } |
| ; |
| ; We are looking for the shifts to get combined into mul along with vectorization. |
| |
| define void @loop_or(i8* noalias %pIn, i32* noalias %pOut, i32 %s) { |
| ; CHECK-LABEL: @loop_or( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[S:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[S]] to i64 |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[S]], 8 |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[FOR_BODY_PREHEADER4:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[WIDE_TRIP_COUNT]], 4294967288 |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds i8, i8* [[PIN:%.*]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = bitcast i8* [[TMP0]] to <4 x i8>* |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i8>, <4 x i8>* [[TMP1]], align 1 |
| ; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i8, i8* [[TMP0]], i64 4 |
| ; CHECK-NEXT: [[TMP3:%.*]] = bitcast i8* [[TMP2]] to <4 x i8>* |
| ; CHECK-NEXT: [[WIDE_LOAD3:%.*]] = load <4 x i8>, <4 x i8>* [[TMP3]], align 1 |
| ; CHECK-NEXT: [[TMP4:%.*]] = zext <4 x i8> [[WIDE_LOAD]] to <4 x i32> |
| ; CHECK-NEXT: [[TMP5:%.*]] = zext <4 x i8> [[WIDE_LOAD3]] to <4 x i32> |
| ; CHECK-NEXT: [[TMP6:%.*]] = mul nuw nsw <4 x i32> [[TMP4]], <i32 65792, i32 65792, i32 65792, i32 65792> |
| ; CHECK-NEXT: [[TMP7:%.*]] = mul nuw nsw <4 x i32> [[TMP5]], <i32 65792, i32 65792, i32 65792, i32 65792> |
| ; CHECK-NEXT: [[TMP8:%.*]] = or <4 x i32> [[TMP4]], <i32 -16777216, i32 -16777216, i32 -16777216, i32 -16777216> |
| ; CHECK-NEXT: [[TMP9:%.*]] = or <4 x i32> [[TMP5]], <i32 -16777216, i32 -16777216, i32 -16777216, i32 -16777216> |
| ; CHECK-NEXT: [[TMP10:%.*]] = add nsw <4 x i32> [[TMP8]], [[TMP6]] |
| ; CHECK-NEXT: [[TMP11:%.*]] = add nsw <4 x i32> [[TMP9]], [[TMP7]] |
| ; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, i32* [[POUT:%.*]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[TMP13:%.*]] = bitcast i32* [[TMP12]] to <4 x i32>* |
| ; CHECK-NEXT: store <4 x i32> [[TMP10]], <4 x i32>* [[TMP13]], align 4 |
| ; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds i32, i32* [[TMP12]], i64 4 |
| ; CHECK-NEXT: [[TMP15:%.*]] = bitcast i32* [[TMP14]] to <4 x i32>* |
| ; CHECK-NEXT: store <4 x i32> [[TMP11]], <4 x i32>* [[TMP15]], align 4 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 8 |
| ; CHECK-NEXT: [[TMP16:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP16]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP0:!llvm.loop !.*]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N_VEC]], [[WIDE_TRIP_COUNT]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END]], label [[FOR_BODY_PREHEADER4]] |
| ; CHECK: for.body.preheader4: |
| ; CHECK-NEXT: [[INDVARS_IV_PH:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[N_VEC]], [[MIDDLE_BLOCK]] ] |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[INDVARS_IV_PH]], [[FOR_BODY_PREHEADER4]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, i8* [[PIN]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP17:%.*]] = load i8, i8* [[ARRAYIDX]], align 1 |
| ; CHECK-NEXT: [[CONV:%.*]] = zext i8 [[TMP17]] to i32 |
| ; CHECK-NEXT: [[REASS_MUL:%.*]] = mul nuw nsw i32 [[CONV]], 65792 |
| ; CHECK-NEXT: [[OR2:%.*]] = or i32 [[CONV]], -16777216 |
| ; CHECK-NEXT: [[OR3:%.*]] = add nsw i32 [[OR2]], [[REASS_MUL]] |
| ; CHECK-NEXT: [[ARRAYIDX5:%.*]] = getelementptr inbounds i32, i32* [[POUT]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: store i32 [[OR3]], i32* [[ARRAYIDX5]], align 4 |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]] |
| ; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_END]], label [[FOR_BODY]], [[LOOP2:!llvm.loop !.*]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %for.cond |
| |
| for.cond: |
| %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ] |
| %cmp = icmp slt i32 %i.0, %s |
| br i1 %cmp, label %for.body, label %for.cond.cleanup |
| |
| for.cond.cleanup: |
| br label %for.end |
| |
| for.body: |
| %idxprom = sext i32 %i.0 to i64 |
| %arrayidx = getelementptr inbounds i8, i8* %pIn, i64 %idxprom |
| %0 = load i8, i8* %arrayidx, align 1 |
| %conv = zext i8 %0 to i32 |
| %shl = shl i32 %conv, 8 |
| %or = or i32 %conv, %shl |
| %shl1 = shl i32 %conv, 16 |
| %or2 = or i32 %or, %shl1 |
| %or3 = or i32 %or2, -16777216 |
| %idxprom4 = sext i32 %i.0 to i64 |
| %arrayidx5 = getelementptr inbounds i32, i32* %pOut, i64 %idxprom4 |
| store i32 %or3, i32* %arrayidx5, align 4 |
| br label %for.inc |
| |
| for.inc: |
| %inc = add nsw i32 %i.0, 1 |
| br label %for.cond |
| |
| for.end: |
| ret void |
| } |