; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes='loop-vectorize' -force-vector-width=2 -enable-epilogue-vectorization -epilogue-vectorization-force-VF=2 -S %s | FileCheck %s
target triple = "arm64-apple-macosx"
; Test for #57712.
define void @test_widen_ptr_induction(ptr %ptr.start.1) {
; CHECK-LABEL: @test_widen_ptr_induction(
; CHECK-NEXT: iter.check:
; CHECK-NEXT: br i1 false, label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
; CHECK: vector.main.loop.iter.check:
; CHECK-NEXT: br i1 false, label [[VEC_EPILOG_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: [[TMP0:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT: [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[PTR_START_1:%.*]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[INDEX]], 1
; CHECK-NEXT: [[NEXT_GEP1:%.*]] = getelementptr i8, ptr [[PTR_START_1]], i64 [[TMP1]]
; CHECK-NEXT: [[TMP2:%.*]] = insertelement <2 x ptr> poison, ptr [[NEXT_GEP]], i32 0
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <2 x ptr> [[TMP2]], ptr [[NEXT_GEP1]], i32 1
; CHECK-NEXT: [[TMP4:%.*]] = add i64 [[INDEX]], 2
; CHECK-NEXT: [[NEXT_GEP2:%.*]] = getelementptr i8, ptr [[PTR_START_1]], i64 [[TMP4]]
; CHECK-NEXT: [[TMP5:%.*]] = add i64 [[INDEX]], 3
; CHECK-NEXT: [[NEXT_GEP3:%.*]] = getelementptr i8, ptr [[PTR_START_1]], i64 [[TMP5]]
; CHECK-NEXT: [[TMP6:%.*]] = insertelement <2 x ptr> poison, ptr [[NEXT_GEP2]], i32 0
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <2 x ptr> [[TMP6]], ptr [[NEXT_GEP3]], i32 1
; CHECK-NEXT: [[TMP8:%.*]] = icmp ne <2 x ptr> [[TMP3]], zeroinitializer
; CHECK-NEXT: [[TMP9:%.*]] = icmp ne <2 x ptr> [[TMP7]], zeroinitializer
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x i1> [[TMP8]], i32 0
; CHECK-NEXT: tail call void @llvm.assume(i1 [[TMP10]])
; CHECK-NEXT: [[TMP11:%.*]] = extractelement <2 x i1> [[TMP8]], i32 1
; CHECK-NEXT: tail call void @llvm.assume(i1 [[TMP11]])
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <2 x i1> [[TMP9]], i32 0
; CHECK-NEXT: tail call void @llvm.assume(i1 [[TMP12]])
; CHECK-NEXT: [[TMP13:%.*]] = extractelement <2 x i1> [[TMP9]], i32 1
; CHECK-NEXT: tail call void @llvm.assume(i1 [[TMP13]])
; CHECK-NEXT: [[TMP14:%.*]] = getelementptr i8, ptr [[NEXT_GEP]], i32 0
; CHECK-NEXT: store <2 x i8> zeroinitializer, ptr [[TMP14]], align 1
; CHECK-NEXT: [[TMP15:%.*]] = getelementptr i8, ptr [[NEXT_GEP]], i32 2
; CHECK-NEXT: store <2 x i8> zeroinitializer, ptr [[TMP15]], align 1
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP16:%.*]] = icmp eq i64 [[INDEX_NEXT]], 10000
; CHECK-NEXT: br i1 [[TMP16]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 10001, 10000
; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
; CHECK: vec.epilog.iter.check:
; CHECK-NEXT: [[IND_END4:%.*]] = getelementptr i8, ptr [[PTR_START_1]], i64 10000
; CHECK-NEXT: br i1 true, label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
; CHECK: vec.epilog.ph:
; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ 10000, [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
; CHECK-NEXT: [[IND_END:%.*]] = getelementptr i8, ptr [[PTR_START_1]], i64 10000
; CHECK-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
; CHECK: vec.epilog.vector.body:
; CHECK-NEXT: [[INDEX7:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT10:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP17:%.*]] = add i64 [[INDEX7]], 0
; CHECK-NEXT: [[NEXT_GEP8:%.*]] = getelementptr i8, ptr [[PTR_START_1]], i64 [[TMP17]]
; CHECK-NEXT: [[TMP18:%.*]] = add i64 [[INDEX7]], 1
; CHECK-NEXT: [[NEXT_GEP9:%.*]] = getelementptr i8, ptr [[PTR_START_1]], i64 [[TMP18]]
; CHECK-NEXT: [[TMP19:%.*]] = insertelement <2 x ptr> poison, ptr [[NEXT_GEP8]], i32 0
; CHECK-NEXT: [[TMP20:%.*]] = insertelement <2 x ptr> [[TMP19]], ptr [[NEXT_GEP9]], i32 1
; CHECK-NEXT: [[TMP21:%.*]] = icmp ne <2 x ptr> [[TMP20]], zeroinitializer
; CHECK-NEXT: [[TMP22:%.*]] = extractelement <2 x i1> [[TMP21]], i32 0
; CHECK-NEXT: tail call void @llvm.assume(i1 [[TMP22]])
; CHECK-NEXT: [[TMP23:%.*]] = extractelement <2 x i1> [[TMP21]], i32 1
; CHECK-NEXT: tail call void @llvm.assume(i1 [[TMP23]])
; CHECK-NEXT: [[TMP24:%.*]] = getelementptr i8, ptr [[NEXT_GEP8]], i32 0
; CHECK-NEXT: store <2 x i8> zeroinitializer, ptr [[TMP24]], align 1
; CHECK-NEXT: [[INDEX_NEXT10]] = add nuw i64 [[INDEX7]], 2
; CHECK-NEXT: [[TMP25:%.*]] = icmp eq i64 [[INDEX_NEXT10]], 10000
; CHECK-NEXT: br i1 [[TMP25]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP2:![0-9]+]]
; CHECK: vec.epilog.middle.block:
; CHECK-NEXT: [[CMP_N6:%.*]] = icmp eq i64 10001, 10000
; CHECK-NEXT: br i1 [[CMP_N6]], label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
; CHECK: vec.epilog.scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 10000, [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 10000, [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
; CHECK-NEXT: [[BC_RESUME_VAL5:%.*]] = phi ptr [ [[IND_END]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[IND_END4]], [[VEC_EPILOG_ITER_CHECK]] ], [ [[PTR_START_1]], [[ITER_CHECK]] ]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[BC_RESUME_VAL5]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[CMP_I_I_I_I:%.*]] = icmp ne ptr [[PTR_IV]], null
; CHECK-NEXT: tail call void @llvm.assume(i1 [[CMP_I_I_I_I]])
; CHECK-NEXT: store i8 0, ptr [[PTR_IV]], align 1
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i8, ptr [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i64 [[IV]], 10000
; CHECK-NEXT: br i1 [[EC]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
%ptr.iv = phi ptr [ %ptr.start.1, %entry ], [ %ptr.iv.next, %loop ]
%cmp.i.i.i.i = icmp ne ptr %ptr.iv, null
tail call void @llvm.assume(i1 %cmp.i.i.i.i)
store i8 0, ptr %ptr.iv, align 1
%iv.next = add nuw nsw i64 %iv, 1
%ptr.iv.next = getelementptr inbounds i8, ptr %ptr.iv, i64 1
%ec = icmp eq i64 %iv, 10000
br i1 %ec, label %exit, label %loop
exit:
ret void
}
declare void @llvm.assume(i1 noundef)
define void @test_widen_induction(i32 %init, ptr %A, i32 %N, i32 %step) {
; CHECK-LABEL: @test_widen_induction(
; 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: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[STEP_ADD:%.*]] = add <2 x i64> [[VEC_IND]], <i64 2, i64 2>
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[INDEX]], 2
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i64, ptr [[A:%.*]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP1]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i64, ptr [[TMP2]], i32 0
; CHECK-NEXT: store <2 x i64> [[VEC_IND]], ptr [[TMP4]], align 4
; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds i64, ptr [[TMP2]], i32 2
; CHECK-NEXT: store <2 x i64> [[STEP_ADD]], ptr [[TMP5]], align 4
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[STEP_ADD]], <i64 2, i64 2>
; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1000
; CHECK-NEXT: br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 1000, 1000
; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 1000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV_1:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_1_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[IV_1]]
; CHECK-NEXT: store i64 [[IV_1]], ptr [[GEP_A]], align 4
; CHECK-NEXT: [[IV_1_NEXT]] = add nuw nsw i64 [[IV_1]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_1_NEXT]], 1000
; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%iv.1 = phi i64 [ 0, %entry ], [ %iv.1.next, %loop ]
%gep.A = getelementptr inbounds i64, ptr %A, i64 %iv.1
store i64 %iv.1, ptr %gep.A, align 4
%iv.1.next = add nuw nsw i64 %iv.1, 1
%exitcond = icmp eq i64 %iv.1.next, 1000
br i1 %exitcond, label %exit, label %loop
exit:
ret void
}
define void @test_widen_extended_induction(ptr %dst) {
; CHECK-LABEL: @test_widen_extended_induction(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_SCEVCHECK:%.*]]
; CHECK: vector.scevcheck:
; CHECK-NEXT: br i1 true, label [[SCALAR_PH]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i8> [ <i8 0, i8 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[STEP_ADD:%.*]] = add <2 x i8> [[VEC_IND]], <i8 2, i8 2>
; CHECK-NEXT: [[OFFSET_IDX:%.*]] = trunc i32 [[INDEX]] to i8
; CHECK-NEXT: [[TMP0:%.*]] = add i8 [[OFFSET_IDX]], 0
; CHECK-NEXT: [[TMP1:%.*]] = add i8 [[OFFSET_IDX]], 2
; CHECK-NEXT: [[TMP2:%.*]] = zext i8 [[TMP0]] to i64
; CHECK-NEXT: [[TMP3:%.*]] = zext i8 [[TMP1]] to i64
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds [6 x i8], ptr [[DST:%.*]], i64 0, i64 [[TMP2]]
; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds [6 x i8], ptr [[DST]], i64 0, i64 [[TMP3]]
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i8, ptr [[TMP4]], i32 0
; CHECK-NEXT: store <2 x i8> [[VEC_IND]], ptr [[TMP6]], align 1
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i8, ptr [[TMP4]], i32 2
; CHECK-NEXT: store <2 x i8> [[STEP_ADD]], ptr [[TMP7]], align 1
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i8> [[STEP_ADD]], <i8 2, i8 2>
; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i32 [[INDEX_NEXT]], 10000
; CHECK-NEXT: br i1 [[TMP8]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 10000, 10000
; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i8 [ 16, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ], [ 0, [[VECTOR_SCEVCHECK]] ]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[IV_EXT:%.*]] = zext i8 [[IV]] to i64
; CHECK-NEXT: [[ARRAYIDX1449:%.*]] = getelementptr inbounds [6 x i8], ptr [[DST]], i64 0, i64 [[IV_EXT]]
; CHECK-NEXT: store i8 [[IV]], ptr [[ARRAYIDX1449]], align 1
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
; CHECK-NEXT: [[IV_NEXT_EXT:%.*]] = zext i8 [[IV_NEXT]] to i32
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32 [[IV_NEXT_EXT]], 10000
; CHECK-NEXT: br i1 [[EC]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%iv = phi i8 [ 0, %entry ], [ %iv.next, %loop ]
%iv.ext = zext i8 %iv to i64
%arrayidx1449 = getelementptr inbounds [6 x i8], ptr %dst, i64 0, i64 %iv.ext
store i8 %iv, ptr %arrayidx1449, align 1
%iv.next = add i8 %iv, 1
%iv.next.ext = zext i8 %iv.next to i32
%ec = icmp eq i32 %iv.next.ext, 10000
br i1 %ec, label %exit, label %loop
exit:
ret void
}
define void @test_widen_truncated_induction(ptr %A) {
; CHECK-LABEL: @test_widen_truncated_induction(
; 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: [[VEC_IND:%.*]] = phi <2 x i8> [ <i8 0, i8 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[STEP_ADD:%.*]] = add <2 x i8> [[VEC_IND]], <i8 2, i8 2>
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[INDEX]], 2
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i8, ptr [[A:%.*]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 [[TMP1]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i8, ptr [[TMP2]], i32 0
; CHECK-NEXT: store <2 x i8> [[VEC_IND]], ptr [[TMP4]], align 1
; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds i8, ptr [[TMP2]], i32 2
; CHECK-NEXT: store <2 x i8> [[STEP_ADD]], ptr [[TMP5]], align 1
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i8> [[STEP_ADD]], <i8 2, i8 2>
; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], 10000
; CHECK-NEXT: br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 10000, 10000
; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 10000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[IV_TRUNC:%.*]] = trunc i64 [[IV]] to i8
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 [[IV]]
; CHECK-NEXT: store i8 [[IV_TRUNC]], ptr [[ARRAYIDX]], align 1
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[IV_NEXT]], 10000
; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
%iv.trunc = trunc i64 %iv to i8
%arrayidx = getelementptr inbounds i8, ptr %A, i64 %iv
store i8 %iv.trunc, ptr %arrayidx, align 1
%iv.next = add nuw nsw i64 %iv, 1
%exitcond = icmp ne i64 %iv.next, 10000
br i1 %exitcond, label %loop, label %exit
exit:
ret void
}