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llvm-project/llvm/test/Transforms/LoopVectorize/RISCV/riscv-unroll.ll

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LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -loop-vectorize -force-target-max-vector-interleave=1 -mtriple=riscv64 -mattr=+v -riscv-v-vector-bits-min=128 -scalable-vectorization=off -S | FileCheck %s --check-prefix=LMUL1
; RUN: opt < %s -loop-vectorize -force-target-max-vector-interleave=1 -mtriple=riscv32 -mattr=+v -riscv-v-vector-bits-min=128 -scalable-vectorization=off -S | FileCheck %s --check-prefix=LMUL1
; RUN: opt < %s -loop-vectorize -force-target-max-vector-interleave=1 -mtriple=riscv64 -mattr=+v -riscv-v-vector-bits-min=128 -scalable-vectorization=off -riscv-v-register-bit-width-lmul=2 -S | FileCheck %s --check-prefix=LMUL2
; RUN: opt < %s -loop-vectorize -force-target-max-vector-interleave=1 -mtriple=riscv32 -mattr=+v -riscv-v-vector-bits-min=128 -scalable-vectorization=off -riscv-v-register-bit-width-lmul=2 -S | FileCheck %s --check-prefix=LMUL2
; Function Attrs: nounwind
define i32* @array_add(i32* noalias nocapture readonly %a, i32* noalias nocapture readonly %b, i32* %c, i32 %size) {
; LMUL1-LABEL: @array_add(
; LMUL1-NEXT: entry:
; LMUL1-NEXT: [[CMP10:%.*]] = icmp sgt i32 [[SIZE:%.*]], 0
; LMUL1-NEXT: br i1 [[CMP10]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]]
; LMUL1: for.body.preheader:
; LMUL1-NEXT: [[TMP0:%.*]] = add i32 [[SIZE]], -1
; LMUL1-NEXT: [[TMP1:%.*]] = zext i32 [[TMP0]] to i64
; LMUL1-NEXT: [[TMP2:%.*]] = add nuw nsw i64 [[TMP1]], 1
; LMUL1-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP2]], 4
; LMUL1-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; LMUL1: vector.ph:
; LMUL1-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[TMP2]], 4
; LMUL1-NEXT: [[N_VEC:%.*]] = sub i64 [[TMP2]], [[N_MOD_VF]]
; LMUL1-NEXT: br label [[VECTOR_BODY:%.*]]
; LMUL1: vector.body:
; LMUL1-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; LMUL1-NEXT: [[TMP3:%.*]] = add i64 [[INDEX]], 0
; LMUL1-NEXT: [[TMP4:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[TMP3]]
; LMUL1-NEXT: [[TMP5:%.*]] = getelementptr inbounds i32, i32* [[TMP4]], i32 0
; LMUL1-NEXT: [[TMP6:%.*]] = bitcast i32* [[TMP5]] to <4 x i32>*
; LMUL1-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, <4 x i32>* [[TMP6]], align 4
; LMUL1-NEXT: [[TMP7:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[TMP3]]
; LMUL1-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[TMP7]], i32 0
; LMUL1-NEXT: [[TMP9:%.*]] = bitcast i32* [[TMP8]] to <4 x i32>*
; LMUL1-NEXT: [[WIDE_LOAD1:%.*]] = load <4 x i32>, <4 x i32>* [[TMP9]], align 4
; LMUL1-NEXT: [[TMP10:%.*]] = add nsw <4 x i32> [[WIDE_LOAD1]], [[WIDE_LOAD]]
; LMUL1-NEXT: [[TMP11:%.*]] = getelementptr inbounds i32, i32* [[C:%.*]], i64 [[TMP3]]
; LMUL1-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, i32* [[TMP11]], i32 0
; LMUL1-NEXT: [[TMP13:%.*]] = bitcast i32* [[TMP12]] to <4 x i32>*
; LMUL1-NEXT: store <4 x i32> [[TMP10]], <4 x i32>* [[TMP13]], align 4
; LMUL1-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; LMUL1-NEXT: [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; LMUL1-NEXT: br i1 [[TMP14]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; LMUL1: middle.block:
; LMUL1-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP2]], [[N_VEC]]
; LMUL1-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[SCALAR_PH]]
; LMUL1: scalar.ph:
; LMUL1-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[FOR_BODY_PREHEADER]] ]
; LMUL1-NEXT: br label [[FOR_BODY:%.*]]
; LMUL1: for.body:
; LMUL1-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; LMUL1-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[INDVARS_IV]]
; LMUL1-NEXT: [[TMP15:%.*]] = load i32, i32* [[ARRAYIDX]], align 4
; LMUL1-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, i32* [[B]], i64 [[INDVARS_IV]]
; LMUL1-NEXT: [[TMP16:%.*]] = load i32, i32* [[ARRAYIDX2]], align 4
; LMUL1-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP16]], [[TMP15]]
; LMUL1-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, i32* [[C]], i64 [[INDVARS_IV]]
; LMUL1-NEXT: store i32 [[ADD]], i32* [[ARRAYIDX4]], align 4
; LMUL1-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; LMUL1-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32
; LMUL1-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[SIZE]]
; LMUL1-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP2:![0-9]+]]
; LMUL1: for.end.loopexit:
; LMUL1-NEXT: br label [[FOR_END]]
; LMUL1: for.end:
; LMUL1-NEXT: ret i32* [[C]]
;
; LMUL2-LABEL: @array_add(
; LMUL2-NEXT: entry:
; LMUL2-NEXT: [[CMP10:%.*]] = icmp sgt i32 [[SIZE:%.*]], 0
; LMUL2-NEXT: br i1 [[CMP10]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]]
; LMUL2: for.body.preheader:
; LMUL2-NEXT: [[TMP0:%.*]] = add i32 [[SIZE]], -1
; LMUL2-NEXT: [[TMP1:%.*]] = zext i32 [[TMP0]] to i64
; LMUL2-NEXT: [[TMP2:%.*]] = add nuw nsw i64 [[TMP1]], 1
; LMUL2-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP2]], 8
; LMUL2-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; LMUL2: vector.ph:
; LMUL2-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[TMP2]], 8
; LMUL2-NEXT: [[N_VEC:%.*]] = sub i64 [[TMP2]], [[N_MOD_VF]]
; LMUL2-NEXT: br label [[VECTOR_BODY:%.*]]
; LMUL2: vector.body:
; LMUL2-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; LMUL2-NEXT: [[TMP3:%.*]] = add i64 [[INDEX]], 0
; LMUL2-NEXT: [[TMP4:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[TMP3]]
; LMUL2-NEXT: [[TMP5:%.*]] = getelementptr inbounds i32, i32* [[TMP4]], i32 0
; LMUL2-NEXT: [[TMP6:%.*]] = bitcast i32* [[TMP5]] to <8 x i32>*
; LMUL2-NEXT: [[WIDE_LOAD:%.*]] = load <8 x i32>, <8 x i32>* [[TMP6]], align 4
; LMUL2-NEXT: [[TMP7:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[TMP3]]
; LMUL2-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[TMP7]], i32 0
; LMUL2-NEXT: [[TMP9:%.*]] = bitcast i32* [[TMP8]] to <8 x i32>*
; LMUL2-NEXT: [[WIDE_LOAD1:%.*]] = load <8 x i32>, <8 x i32>* [[TMP9]], align 4
; LMUL2-NEXT: [[TMP10:%.*]] = add nsw <8 x i32> [[WIDE_LOAD1]], [[WIDE_LOAD]]
; LMUL2-NEXT: [[TMP11:%.*]] = getelementptr inbounds i32, i32* [[C:%.*]], i64 [[TMP3]]
; LMUL2-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, i32* [[TMP11]], i32 0
; LMUL2-NEXT: [[TMP13:%.*]] = bitcast i32* [[TMP12]] to <8 x i32>*
; LMUL2-NEXT: store <8 x i32> [[TMP10]], <8 x i32>* [[TMP13]], align 4
; LMUL2-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; LMUL2-NEXT: [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; LMUL2-NEXT: br i1 [[TMP14]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; LMUL2: middle.block:
; LMUL2-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP2]], [[N_VEC]]
; LMUL2-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[SCALAR_PH]]
; LMUL2: scalar.ph:
; LMUL2-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[FOR_BODY_PREHEADER]] ]
; LMUL2-NEXT: br label [[FOR_BODY:%.*]]
; LMUL2: for.body:
; LMUL2-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; LMUL2-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[INDVARS_IV]]
; LMUL2-NEXT: [[TMP15:%.*]] = load i32, i32* [[ARRAYIDX]], align 4
; LMUL2-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, i32* [[B]], i64 [[INDVARS_IV]]
; LMUL2-NEXT: [[TMP16:%.*]] = load i32, i32* [[ARRAYIDX2]], align 4
; LMUL2-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP16]], [[TMP15]]
; LMUL2-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, i32* [[C]], i64 [[INDVARS_IV]]
; LMUL2-NEXT: store i32 [[ADD]], i32* [[ARRAYIDX4]], align 4
; LMUL2-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; LMUL2-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32
; LMUL2-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[SIZE]]
; LMUL2-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP2:![0-9]+]]
; LMUL2: for.end.loopexit:
; LMUL2-NEXT: br label [[FOR_END]]
; LMUL2: for.end:
; LMUL2-NEXT: ret i32* [[C]]
;
entry:
%cmp10 = icmp sgt i32 %size, 0
br i1 %cmp10, label %for.body.preheader, label %for.end
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
%arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%arrayidx2 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv
%1 = load i32, i32* %arrayidx2, align 4
%add = add nsw i32 %1, %0
%arrayidx4 = getelementptr inbounds i32, i32* %c, i64 %indvars.iv
store i32 %add, i32* %arrayidx4, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %size
br i1 %exitcond, label %for.end.loopexit, label %for.body
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret i32* %c
}
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