; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=loop-vectorize \
; RUN: -force-tail-folding-style=data-with-evl \
; RUN: -prefer-predicate-over-epilogue=predicate-dont-vectorize \
; RUN: -mtriple=riscv64 -mattr=+v -S < %s | FileCheck --check-prefix=IF-EVL %s
; RUN: opt -passes=loop-vectorize \
; RUN: -force-tail-folding-style=none \
; RUN: -prefer-predicate-over-epilogue=predicate-else-scalar-epilogue \
; RUN: -mtriple=riscv64 -mattr=+v -S < %s | FileCheck --check-prefix=NO-VP %s
define void @foo(ptr noalias %a, ptr noalias %b, ptr noalias %c, i64 %N) {
; IF-EVL-LABEL: @foo(
; IF-EVL-NEXT: entry:
; IF-EVL-NEXT: [[TMP0:%.*]] = sub i64 -1, [[N:%.*]]
; IF-EVL-NEXT: [[TMP1:%.*]] = call i64 @llvm.vscale.i64()
; IF-EVL-NEXT: [[TMP2:%.*]] = mul i64 [[TMP1]], 4
; IF-EVL-NEXT: [[TMP3:%.*]] = icmp ult i64 [[TMP0]], [[TMP2]]
; IF-EVL-NEXT: br i1 [[TMP3]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; IF-EVL: vector.ph:
; IF-EVL-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; IF-EVL-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; IF-EVL-NEXT: [[TMP8:%.*]] = sub i64 [[TMP5]], 1
; IF-EVL-NEXT: [[N_RND_UP:%.*]] = add i64 [[N]], [[TMP8]]
; IF-EVL-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N_RND_UP]], [[TMP5]]
; IF-EVL-NEXT: [[N_VEC:%.*]] = sub i64 [[N_RND_UP]], [[N_MOD_VF]]
; IF-EVL-NEXT: [[TMP9:%.*]] = call i64 @llvm.vscale.i64()
; IF-EVL-NEXT: [[TMP10:%.*]] = mul i64 [[TMP9]], 4
; IF-EVL-NEXT: br label [[VECTOR_BODY:%.*]]
; IF-EVL: vector.body:
; IF-EVL-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; IF-EVL-NEXT: [[EVL_BASED_IV:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_EVL_NEXT:%.*]], [[VECTOR_BODY]] ]
; IF-EVL-NEXT: [[TMP11:%.*]] = sub i64 [[N]], [[EVL_BASED_IV]]
; IF-EVL-NEXT: [[TMP12:%.*]] = call i32 @llvm.experimental.get.vector.length.i64(i64 [[TMP11]], i32 4, i1 true)
; IF-EVL-NEXT: [[TMP13:%.*]] = add i64 [[EVL_BASED_IV]], 0
; IF-EVL-NEXT: [[TMP14:%.*]] = getelementptr inbounds i32, ptr [[B:%.*]], i64 [[TMP13]]
; IF-EVL-NEXT: [[TMP15:%.*]] = getelementptr inbounds i32, ptr [[TMP14]], i32 0
; IF-EVL-NEXT: [[VP_OP_LOAD:%.*]] = call <vscale x 4 x i32> @llvm.vp.load.nxv4i32.p0(ptr align 4 [[TMP15]], <vscale x 4 x i1> shufflevector (<vscale x 4 x i1> insertelement (<vscale x 4 x i1> poison, i1 true, i64 0), <vscale x 4 x i1> poison, <vscale x 4 x i32> zeroinitializer), i32 [[TMP12]])
; IF-EVL-NEXT: [[TMP16:%.*]] = getelementptr inbounds i32, ptr [[C:%.*]], i64 [[TMP13]]
; IF-EVL-NEXT: [[TMP17:%.*]] = getelementptr inbounds i32, ptr [[TMP16]], i32 0
; IF-EVL-NEXT: [[VP_OP_LOAD1:%.*]] = call <vscale x 4 x i32> @llvm.vp.load.nxv4i32.p0(ptr align 4 [[TMP17]], <vscale x 4 x i1> shufflevector (<vscale x 4 x i1> insertelement (<vscale x 4 x i1> poison, i1 true, i64 0), <vscale x 4 x i1> poison, <vscale x 4 x i32> zeroinitializer), i32 [[TMP12]])
; IF-EVL-NEXT: [[VP_OP:%.*]] = call <vscale x 4 x i32> @llvm.vp.add.nxv4i32(<vscale x 4 x i32> [[VP_OP_LOAD1]], <vscale x 4 x i32> [[VP_OP_LOAD]], <vscale x 4 x i1> shufflevector (<vscale x 4 x i1> insertelement (<vscale x 4 x i1> poison, i1 true, i64 0), <vscale x 4 x i1> poison, <vscale x 4 x i32> zeroinitializer), i32 [[TMP12]])
; IF-EVL-NEXT: [[TMP18:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i64 [[TMP13]]
; IF-EVL-NEXT: [[TMP19:%.*]] = getelementptr inbounds i32, ptr [[TMP18]], i32 0
; IF-EVL-NEXT: call void @llvm.vp.store.nxv4i32.p0(<vscale x 4 x i32> [[VP_OP]], ptr align 4 [[TMP19]], <vscale x 4 x i1> shufflevector (<vscale x 4 x i1> insertelement (<vscale x 4 x i1> poison, i1 true, i64 0), <vscale x 4 x i1> poison, <vscale x 4 x i32> zeroinitializer), i32 [[TMP12]])
; IF-EVL-NEXT: [[TMP20:%.*]] = zext i32 [[TMP12]] to i64
; IF-EVL-NEXT: [[INDEX_EVL_NEXT]] = add i64 [[TMP20]], [[EVL_BASED_IV]]
; IF-EVL-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], [[TMP10]]
; IF-EVL-NEXT: [[TMP21:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; IF-EVL-NEXT: br i1 [[TMP21]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; IF-EVL: middle.block:
; IF-EVL-NEXT: br i1 true, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; IF-EVL: scalar.ph:
; IF-EVL-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; IF-EVL-NEXT: br label [[FOR_BODY:%.*]]
; IF-EVL: for.body:
; IF-EVL-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
; IF-EVL-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IV]]
; IF-EVL-NEXT: [[TMP22:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; IF-EVL-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[C]], i64 [[IV]]
; IF-EVL-NEXT: [[TMP23:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; IF-EVL-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP23]], [[TMP22]]
; IF-EVL-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; IF-EVL-NEXT: store i32 [[ADD]], ptr [[ARRAYIDX4]], align 4
; IF-EVL-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; IF-EVL-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV_NEXT]], [[N]]
; IF-EVL-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; IF-EVL: for.cond.cleanup:
; IF-EVL-NEXT: ret void
;
; NO-VP-LABEL: @foo(
; NO-VP-NEXT: entry:
; NO-VP-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; NO-VP-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; NO-VP-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], [[TMP1]]
; NO-VP-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; NO-VP: vector.ph:
; NO-VP-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; NO-VP-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; NO-VP-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], [[TMP3]]
; NO-VP-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
; NO-VP-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; NO-VP-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; NO-VP-NEXT: br label [[VECTOR_BODY:%.*]]
; NO-VP: vector.body:
; NO-VP-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; NO-VP-NEXT: [[TMP6:%.*]] = add i64 [[INDEX]], 0
; NO-VP-NEXT: [[TMP7:%.*]] = getelementptr inbounds i32, ptr [[B:%.*]], i64 [[TMP6]]
; NO-VP-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, ptr [[TMP7]], i32 0
; NO-VP-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i32>, ptr [[TMP8]], align 4
; NO-VP-NEXT: [[TMP9:%.*]] = getelementptr inbounds i32, ptr [[C:%.*]], i64 [[TMP6]]
; NO-VP-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[TMP9]], i32 0
; NO-VP-NEXT: [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i32>, ptr [[TMP10]], align 4
; NO-VP-NEXT: [[TMP11:%.*]] = add nsw <vscale x 4 x i32> [[WIDE_LOAD1]], [[WIDE_LOAD]]
; NO-VP-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i64 [[TMP6]]
; NO-VP-NEXT: [[TMP13:%.*]] = getelementptr inbounds i32, ptr [[TMP12]], i32 0
; NO-VP-NEXT: store <vscale x 4 x i32> [[TMP11]], ptr [[TMP13]], align 4
; NO-VP-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; NO-VP-NEXT: [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; NO-VP-NEXT: br i1 [[TMP14]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; NO-VP: middle.block:
; NO-VP-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
; NO-VP-NEXT: br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; NO-VP: scalar.ph:
; NO-VP-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; NO-VP-NEXT: br label [[FOR_BODY:%.*]]
; NO-VP: for.body:
; NO-VP-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
; NO-VP-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IV]]
; NO-VP-NEXT: [[TMP15:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; NO-VP-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[C]], i64 [[IV]]
; NO-VP-NEXT: [[TMP16:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; NO-VP-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP16]], [[TMP15]]
; NO-VP-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; NO-VP-NEXT: store i32 [[ADD]], ptr [[ARRAYIDX4]], align 4
; NO-VP-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; NO-VP-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV_NEXT]], [[N]]
; NO-VP-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; NO-VP: for.cond.cleanup:
; NO-VP-NEXT: ret void
;
entry:
br label %for.body
for.body:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
%arrayidx = getelementptr inbounds i32, ptr %b, i64 %iv
%0 = load i32, ptr %arrayidx, align 4
%arrayidx2 = getelementptr inbounds i32, ptr %c, i64 %iv
%1 = load i32, ptr %arrayidx2, align 4
%add = add nsw i32 %1, %0
%arrayidx4 = getelementptr inbounds i32, ptr %a, i64 %iv
store i32 %add, ptr %arrayidx4, align 4
%iv.next = add nuw nsw i64 %iv, 1
%exitcond.not = icmp eq i64 %iv.next, %N
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
for.cond.cleanup:
ret void
}
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