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|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -S < %s -p loop-vectorize -enable-early-exit-vectorization -force-vector-width=4 | FileCheck %s
declare void @init_mem(ptr, i64);
define i64 @same_exit_block_phi_of_consts() {
; CHECK-LABEL: define i64 @same_exit_block_phi_of_consts() {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[P1:%.*]] = alloca [1024 x i8], align 1
; CHECK-NEXT: [[P2:%.*]] = alloca [1024 x i8], align 1
; CHECK-NEXT: call void @init_mem(ptr [[P1]], i64 1024)
; CHECK-NEXT: call void @init_mem(ptr [[P2]], i64 1024)
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX1:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT3:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 3, [[INDEX1]]
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[OFFSET_IDX]], 0
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, ptr [[P1]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i8, ptr [[TMP1]], i32 0
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i8>, ptr [[TMP2]], align 1
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i8, ptr [[P2]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i8, ptr [[TMP3]], i32 0
; CHECK-NEXT: [[WIDE_LOAD2:%.*]] = load <4 x i8>, ptr [[TMP4]], align 1
; CHECK-NEXT: [[TMP5:%.*]] = icmp eq <4 x i8> [[WIDE_LOAD]], [[WIDE_LOAD2]]
; CHECK-NEXT: [[INDEX_NEXT3]] = add nuw i64 [[INDEX1]], 4
; CHECK-NEXT: [[TMP6:%.*]] = xor <4 x i1> [[TMP5]], splat (i1 true)
; CHECK-NEXT: [[TMP7:%.*]] = call i1 @llvm.vector.reduce.or.v4i1(<4 x i1> [[TMP6]])
; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT3]], 64
; CHECK-NEXT: [[TMP9:%.*]] = or i1 [[TMP7]], [[TMP8]]
; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_SPLIT:%.*]], label [[LOOP]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: middle.split:
; CHECK-NEXT: br i1 [[TMP7]], label [[LOOP_END:%.*]], label [[MIDDLE_BLOCK:%.*]]
; CHECK: middle.block:
; CHECK-NEXT: br i1 true, label [[LOOP_END]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 67, [[MIDDLE_BLOCK]] ], [ 3, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[LOOP1:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ [[INDEX_NEXT:%.*]], [[LOOP_INC:%.*]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[P1]], i64 [[INDEX]]
; CHECK-NEXT: [[LD1:%.*]] = load i8, ptr [[ARRAYIDX]], align 1
; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds i8, ptr [[P2]], i64 [[INDEX]]
; CHECK-NEXT: [[LD2:%.*]] = load i8, ptr [[ARRAYIDX1]], align 1
; CHECK-NEXT: [[CMP3:%.*]] = icmp eq i8 [[LD1]], [[LD2]]
; CHECK-NEXT: br i1 [[CMP3]], label [[LOOP_INC]], label [[LOOP_END]]
; CHECK: loop.inc:
; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDEX_NEXT]], 67
; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOP1]], label [[LOOP_END]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK: loop.end:
; CHECK-NEXT: [[RETVAL:%.*]] = phi i64 [ 0, [[LOOP1]] ], [ 1, [[LOOP_INC]] ], [ 1, [[MIDDLE_BLOCK]] ], [ 0, [[MIDDLE_SPLIT]] ]
; CHECK-NEXT: ret i64 [[RETVAL]]
;
entry:
%p1 = alloca [1024 x i8]
%p2 = alloca [1024 x i8]
call void @init_mem(ptr %p1, i64 1024)
call void @init_mem(ptr %p2, i64 1024)
br label %loop
loop:
%index = phi i64 [ %index.next, %loop.inc ], [ 3, %entry ]
%arrayidx = getelementptr inbounds i8, ptr %p1, i64 %index
%ld1 = load i8, ptr %arrayidx, align 1
%arrayidx1 = getelementptr inbounds i8, ptr %p2, i64 %index
%ld2 = load i8, ptr %arrayidx1, align 1
%cmp3 = icmp eq i8 %ld1, %ld2
br i1 %cmp3, label %loop.inc, label %loop.end
loop.inc:
%index.next = add i64 %index, 1
%exitcond = icmp ne i64 %index.next, 67
br i1 %exitcond, label %loop, label %loop.end
loop.end:
%retval = phi i64 [ 0, %loop ], [ 1, %loop.inc ]
ret i64 %retval
}
define i64 @diff_exit_block_phi_of_consts() {
; CHECK-LABEL: define i64 @diff_exit_block_phi_of_consts() {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[P1:%.*]] = alloca [1024 x i8], align 1
; CHECK-NEXT: [[P2:%.*]] = alloca [1024 x i8], align 1
; CHECK-NEXT: call void @init_mem(ptr [[P1]], i64 1024)
; CHECK-NEXT: call void @init_mem(ptr [[P2]], i64 1024)
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX1:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT3:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 3, [[INDEX1]]
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[OFFSET_IDX]], 0
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, ptr [[P1]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i8, ptr [[TMP1]], i32 0
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i8>, ptr [[TMP2]], align 1
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i8, ptr [[P2]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i8, ptr [[TMP3]], i32 0
; CHECK-NEXT: [[WIDE_LOAD2:%.*]] = load <4 x i8>, ptr [[TMP4]], align 1
; CHECK-NEXT: [[TMP5:%.*]] = icmp eq <4 x i8> [[WIDE_LOAD]], [[WIDE_LOAD2]]
; CHECK-NEXT: [[INDEX_NEXT3]] = add nuw i64 [[INDEX1]], 4
; CHECK-NEXT: [[TMP6:%.*]] = xor <4 x i1> [[TMP5]], splat (i1 true)
; CHECK-NEXT: [[TMP7:%.*]] = call i1 @llvm.vector.reduce.or.v4i1(<4 x i1> [[TMP6]])
; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT3]], 64
; CHECK-NEXT: [[TMP9:%.*]] = or i1 [[TMP7]], [[TMP8]]
; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_SPLIT:%.*]], label [[LOOP]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK: middle.split:
; CHECK-NEXT: br i1 [[TMP7]], label [[LOOP_EARLY_EXIT:%.*]], label [[MIDDLE_BLOCK:%.*]]
; CHECK: middle.block:
; CHECK-NEXT: br i1 true, label [[LOOP_END:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 67, [[MIDDLE_BLOCK]] ], [ 3, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[LOOP1:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ [[INDEX_NEXT:%.*]], [[LOOP_INC:%.*]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[P1]], i64 [[INDEX]]
; CHECK-NEXT: [[LD1:%.*]] = load i8, ptr [[ARRAYIDX]], align 1
; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds i8, ptr [[P2]], i64 [[INDEX]]
; CHECK-NEXT: [[LD2:%.*]] = load i8, ptr [[ARRAYIDX1]], align 1
; CHECK-NEXT: [[CMP3:%.*]] = icmp eq i8 [[LD1]], [[LD2]]
; CHECK-NEXT: br i1 [[CMP3]], label [[LOOP_INC]], label [[LOOP_EARLY_EXIT]]
; CHECK: loop.inc:
; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDEX_NEXT]], 67
; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOP1]], label [[LOOP_END]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK: loop.early.exit:
; CHECK-NEXT: ret i64 0
; CHECK: loop.end:
; CHECK-NEXT: ret i64 1
;
entry:
%p1 = alloca [1024 x i8]
%p2 = alloca [1024 x i8]
call void @init_mem(ptr %p1, i64 1024)
call void @init_mem(ptr %p2, i64 1024)
br label %loop
loop:
%index = phi i64 [ %index.next, %loop.inc ], [ 3, %entry ]
%arrayidx = getelementptr inbounds i8, ptr %p1, i64 %index
%ld1 = load i8, ptr %arrayidx, align 1
%arrayidx1 = getelementptr inbounds i8, ptr %p2, i64 %index
%ld2 = load i8, ptr %arrayidx1, align 1
%cmp3 = icmp eq i8 %ld1, %ld2
br i1 %cmp3, label %loop.inc, label %loop.early.exit
loop.inc:
%index.next = add i64 %index, 1
%exitcond = icmp ne i64 %index.next, 67
br i1 %exitcond, label %loop, label %loop.end
loop.early.exit:
ret i64 0
loop.end:
ret i64 1
}
; The form of the induction variables requires SCEV predicates.
define i32 @diff_exit_block_needs_scev_check(i32 %end) {
; CHECK-LABEL: define i32 @diff_exit_block_needs_scev_check(
; CHECK-SAME: i32 [[END:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[P1:%.*]] = alloca [1024 x i32], align 4
; CHECK-NEXT: [[P2:%.*]] = alloca [1024 x i32], align 4
; CHECK-NEXT: call void @init_mem(ptr [[P1]], i64 1024)
; CHECK-NEXT: call void @init_mem(ptr [[P2]], i64 1024)
; CHECK-NEXT: [[END_CLAMPED:%.*]] = and i32 [[END]], 1023
; CHECK-NEXT: [[TMP19:%.*]] = trunc i32 [[END]] to i10
; CHECK-NEXT: [[TMP20:%.*]] = zext i10 [[TMP19]] to i64
; CHECK-NEXT: [[UMAX1:%.*]] = call i64 @llvm.umax.i64(i64 [[TMP20]], i64 1)
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[UMAX1]], 4
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_SCEVCHECK:%.*]]
; CHECK: vector.scevcheck:
; CHECK-NEXT: [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[END_CLAMPED]], i32 1)
; CHECK-NEXT: [[TMP2:%.*]] = add nsw i32 [[UMAX]], -1
; CHECK-NEXT: [[TMP3:%.*]] = trunc i32 [[TMP2]] to i8
; CHECK-NEXT: [[TMP4:%.*]] = add i8 1, [[TMP3]]
; CHECK-NEXT: [[TMP5:%.*]] = icmp ult i8 [[TMP4]], 1
; CHECK-NEXT: [[TMP6:%.*]] = icmp ugt i32 [[TMP2]], 255
; CHECK-NEXT: [[TMP7:%.*]] = or i1 [[TMP5]], [[TMP6]]
; CHECK-NEXT: br i1 [[TMP7]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[UMAX1]], 4
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[UMAX1]], [[N_MOD_VF]]
; CHECK-NEXT: [[IND_END:%.*]] = trunc i64 [[N_VEC]] to i8
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[TMP8:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds i32, ptr [[P1]], i64 [[TMP8]]
; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[TMP9]], i32 0
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP10]], align 4
; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds i32, ptr [[P2]], i64 [[TMP8]]
; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, ptr [[TMP11]], i32 0
; CHECK-NEXT: [[WIDE_LOAD3:%.*]] = load <4 x i32>, ptr [[TMP12]], align 4
; CHECK-NEXT: [[TMP13:%.*]] = icmp eq <4 x i32> [[WIDE_LOAD]], [[WIDE_LOAD3]]
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP16:%.*]] = call i1 @llvm.vector.reduce.or.v4i1(<4 x i1> [[TMP13]])
; CHECK-NEXT: [[TMP17:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: [[TMP18:%.*]] = or i1 [[TMP16]], [[TMP17]]
; CHECK-NEXT: br i1 [[TMP18]], label [[MIDDLE_SPLIT:%.*]], label [[FOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK: middle.split:
; CHECK-NEXT: br i1 [[TMP16]], label [[FOUND:%.*]], label [[MIDDLE_BLOCK:%.*]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[UMAX1]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i8 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[BC_RESUME_VAL2:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[ENTRY]] ]
; CHECK-NEXT: br label [[FOR_BODY1:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IND:%.*]] = phi i8 [ [[IND_NEXT:%.*]], [[FOR_INC:%.*]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[GEP_IND:%.*]] = phi i64 [ [[GEP_IND_NEXT:%.*]], [[FOR_INC]] ], [ [[BC_RESUME_VAL2]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds i32, ptr [[P1]], i64 [[GEP_IND]]
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX1]], align 4
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[P2]], i64 [[GEP_IND]]
; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-NEXT: [[CMP_EARLY:%.*]] = icmp eq i32 [[TMP0]], [[TMP1]]
; CHECK-NEXT: br i1 [[CMP_EARLY]], label [[FOUND]], label [[FOR_INC]]
; CHECK: for.inc:
; CHECK-NEXT: [[IND_NEXT]] = add i8 [[IND]], 1
; CHECK-NEXT: [[CONV:%.*]] = zext i8 [[IND_NEXT]] to i32
; CHECK-NEXT: [[GEP_IND_NEXT]] = add i64 [[GEP_IND]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[CONV]], [[END_CLAMPED]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY1]], label [[EXIT]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK: found:
; CHECK-NEXT: ret i32 1
; CHECK: exit:
; CHECK-NEXT: ret i32 0
;
entry:
%p1 = alloca [1024 x i32]
%p2 = alloca [1024 x i32]
call void @init_mem(ptr %p1, i64 1024)
call void @init_mem(ptr %p2, i64 1024)
%end.clamped = and i32 %end, 1023
br label %for.body
for.body:
%ind = phi i8 [ %ind.next, %for.inc ], [ 0, %entry ]
%gep.ind = phi i64 [ %gep.ind.next, %for.inc ], [ 0, %entry ]
%arrayidx1 = getelementptr inbounds i32, ptr %p1, i64 %gep.ind
%0 = load i32, ptr %arrayidx1, align 4
%arrayidx2 = getelementptr inbounds i32, ptr %p2, i64 %gep.ind
%1 = load i32, ptr %arrayidx2, align 4
%cmp.early = icmp eq i32 %0, %1
br i1 %cmp.early, label %found, label %for.inc
for.inc:
%ind.next = add i8 %ind, 1
%conv = zext i8 %ind.next to i32
%gep.ind.next = add i64 %gep.ind, 1
%cmp = icmp ult i32 %conv, %end.clamped
br i1 %cmp, label %for.body, label %exit
found:
ret i32 1
exit:
ret i32 0
}
declare void @abort()
; This is a variant of an early exit loop where the condition for leaving
; early is loop invariant.
define i32 @diff_blocks_invariant_early_exit_cond(ptr %s) {
; CHECK-LABEL: define i32 @diff_blocks_invariant_early_exit_cond(
; CHECK-SAME: ptr [[S:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SVAL:%.*]] = load i32, ptr [[S]], align 4
; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[SVAL]], 0
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i1> poison, i1 [[COND]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i1> [[BROADCAST_SPLATINSERT]], <4 x i1> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: [[TMP0:%.*]] = xor <4 x i1> [[BROADCAST_SPLAT]], splat (i1 true)
; CHECK-NEXT: [[TMP1:%.*]] = call i1 @llvm.vector.reduce.or.v4i1(<4 x i1> [[TMP0]])
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[INDEX_NEXT]], 276
; CHECK-NEXT: [[TMP3:%.*]] = or i1 [[TMP1]], [[TMP2]]
; CHECK-NEXT: br i1 [[TMP3]], label [[MIDDLE_SPLIT:%.*]], label [[FOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK: middle.split:
; CHECK-NEXT: br i1 [[TMP1]], label [[EARLY_EXIT:%.*]], label [[MIDDLE_BLOCK:%.*]]
; CHECK: middle.block:
; CHECK-NEXT: br i1 true, label [[FOR_END:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ 266, [[MIDDLE_BLOCK]] ], [ -10, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[FOR_BODY1:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IND:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IND_NEXT:%.*]], [[FOR_INC:%.*]] ]
; CHECK-NEXT: br i1 [[COND]], label [[FOR_INC]], label [[EARLY_EXIT]]
; CHECK: for.inc:
; CHECK-NEXT: [[IND_NEXT]] = add nsw i32 [[IND]], 1
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[IND_NEXT]], 266
; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_END]], label [[FOR_BODY1]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK: early.exit:
; CHECK-NEXT: tail call void @abort()
; CHECK-NEXT: unreachable
; CHECK: for.end:
; CHECK-NEXT: ret i32 0
;
entry:
%sval = load i32, ptr %s, align 4
%cond = icmp eq i32 %sval, 0
br label %for.body
for.body:
%ind = phi i32 [ -10, %entry ], [ %ind.next, %for.inc ]
br i1 %cond, label %for.inc, label %early.exit
for.inc:
%ind.next = add nsw i32 %ind, 1
%exitcond.not = icmp eq i32 %ind.next, 266
br i1 %exitcond.not, label %for.end, label %for.body
early.exit:
tail call void @abort()
unreachable
for.end:
ret i32 0
}
;.
; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]}
; CHECK: [[META1]] = !{!"llvm.loop.isvectorized", i32 1}
; CHECK: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"}
; CHECK: [[LOOP3]] = distinct !{[[LOOP3]], [[META2]], [[META1]]}
; CHECK: [[LOOP4]] = distinct !{[[LOOP4]], [[META1]], [[META2]]}
; CHECK: [[LOOP5]] = distinct !{[[LOOP5]], [[META2]], [[META1]]}
; CHECK: [[LOOP6]] = distinct !{[[LOOP6]], [[META1]], [[META2]]}
; CHECK: [[LOOP7]] = distinct !{[[LOOP7]], [[META1]]}
; CHECK: [[LOOP8]] = distinct !{[[LOOP8]], [[META1]], [[META2]]}
; CHECK: [[LOOP9]] = distinct !{[[LOOP9]], [[META2]], [[META1]]}
;.
|
