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; RUN: opt -S -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=2 < %s | FileCheck --check-prefixes=CHECK,VEC %s
; RUN: opt -S -passes=loop-vectorize -force-vector-interleave=2 -force-vector-width=1 < %s | FileCheck --check-prefixes=CHECK %s
; CHECK-LABEL: @postinc
; CHECK-LABEL: scalar.ph:
; CHECK: %bc.resume.val = phi i32 [ %n.vec, %middle.block ], [ 0, %entry ]
; CHECK-LABEL: for.end:
; CHECK: %[[RET:.*]] = phi i32 [ {{.*}}, %for.body ], [ %n.vec, %middle.block ]
; CHECK: ret i32 %[[RET]]
define i32 @postinc(i32 %k) {
entry:
br label %for.body
for.body:
%inc.phi = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%inc = add nsw i32 %inc.phi, 1
%cmp = icmp eq i32 %inc, %k
br i1 %cmp, label %for.end, label %for.body
for.end:
ret i32 %inc
}
; CHECK-LABEL: @preinc
; CHECK-LABEL: middle.block:
; CHECK: %[[v3:.+]] = sub i32 %n.vec, 1
; CHECK-LABEL: scalar.ph:
; CHECK: %bc.resume.val = phi i32 [ %n.vec, %middle.block ], [ 0, %entry ]
; CHECK-LABEL: for.end:
; CHECK: %[[RET:.*]] = phi i32 [ {{.*}}, %for.body ], [ %[[v3]], %middle.block ]
; CHECK: ret i32 %[[RET]]
define i32 @preinc(i32 %k) {
entry:
br label %for.body
for.body:
%inc.phi = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%inc = add nsw i32 %inc.phi, 1
%cmp = icmp eq i32 %inc, %k
br i1 %cmp, label %for.end, label %for.body
for.end:
ret i32 %inc.phi
}
; CHECK-LABEL: @constpre
; CHECK-LABEL: for.end:
; CHECK: %[[RET:.*]] = phi i32 [ {{.*}}, %for.body ], [ 2, %middle.block ]
; CHECK: ret i32 %[[RET]]
define i32 @constpre() {
entry:
br label %for.body
for.body:
%inc.phi = phi i32 [ 32, %entry ], [ %inc, %for.body ]
%inc = sub nsw i32 %inc.phi, 2
%cmp = icmp eq i32 %inc, 0
br i1 %cmp, label %for.end, label %for.body
for.end:
ret i32 %inc.phi
}
; CHECK-LABEL: @geppre
; CHECK-LABEL: middle.block:
; CHECK: %ind.escape = getelementptr i8, ptr %ptr, i64 496
; CHECK-LABEL: for.end:
; CHECK: %[[RET:.*]] = phi ptr [ {{.*}}, %for.body ], [ %ind.escape, %middle.block ]
; CHECK: ret ptr %[[RET]]
define ptr @geppre(ptr %ptr) {
entry:
br label %for.body
for.body:
%inc.phi = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%ptr.phi = phi ptr [ %ptr, %entry ], [ %inc.ptr, %for.body ]
%inc = add nsw i32 %inc.phi, 1
%inc.ptr = getelementptr i32, ptr %ptr.phi, i32 4
%cmp = icmp eq i32 %inc, 32
br i1 %cmp, label %for.end, label %for.body
for.end:
ret ptr %ptr.phi
}
; CHECK-LABEL: @both
; CHECK-LABEL: middle.block:
; CHECK: %[[END:.*]] = sub i64 %n.vec, 1
; CHECK: %[[END_OFFSET:.*]] = mul i64 %[[END]], 4
; CHECK: %ind.escape = getelementptr i8, ptr %base, i64 %[[END_OFFSET]]
; CHECK-LABEL: for.end:
; CHECK: %[[RET:.*]] = phi ptr [ %inc.lag1, %for.body ], [ %ind.escape, %middle.block ]
; CHECK: ret ptr %[[RET]]
define ptr @both(i32 %k) {
entry:
%base = getelementptr inbounds i32, ptr undef, i64 1
br label %for.body
for.body:
%inc.phi = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%inc.lag1 = phi ptr [ %base, %entry ], [ %tmp, %for.body]
%inc.lag2 = phi ptr [ undef, %entry ], [ %inc.lag1, %for.body]
%tmp = getelementptr inbounds i32, ptr %inc.lag1, i64 1
%inc = add nsw i32 %inc.phi, 1
%cmp = icmp eq i32 %inc, %k
br i1 %cmp, label %for.end, label %for.body
for.end:
ret ptr %inc.lag1
}
; CHECK-LABEL: @multiphi
; CHECK-LABEL: scalar.ph:
; CHECK: %bc.resume.val = phi i32 [ %n.vec, %middle.block ], [ 0, %entry ]
; CHECK-LABEL: for.end:
; CHECK: %phi = phi i32 [ {{.*}}, %for.body ], [ %n.vec, %middle.block ]
; CHECK: %phi2 = phi i32 [ {{.*}}, %for.body ], [ %n.vec, %middle.block ]
; CHECK: store i32 %phi2, ptr %p
; CHECK: ret i32 %phi
define i32 @multiphi(i32 %k, ptr %p) {
entry:
br label %for.body
for.body:
%inc.phi = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%inc = add nsw i32 %inc.phi, 1
%cmp = icmp eq i32 %inc, %k
br i1 %cmp, label %for.end, label %for.body
for.end:
%phi = phi i32 [ %inc, %for.body ]
%phi2 = phi i32 [ %inc, %for.body ]
store i32 %phi2, ptr %p
ret i32 %phi
}
; CHECK-LABEL: @PR30742
; CHECK: %[[T15:.+]] = add nsw i32 %tmp03, -7
; CHECK: vector.ph
; CHECK: %[[N_MOD_VF:.+]] = urem i32 %[[T5:.+]], 2
; CHECK: %[[N_VEC:.+]] = sub i32 %[[T5]], %[[N_MOD_VF]]
; CHECK: middle.block
; CHECK: %[[CMP:.+]] = icmp eq i32 %[[T5]], %[[N_VEC]]
; CHECK: %ind.escape = add i32 %[[T15]],
; CHECK: br i1 %[[CMP]], label %BB3, label %scalar.ph
define void @PR30742() {
BB0:
br label %BB1
BB1:
%tmp00 = load i32, ptr undef, align 16
%tmp01 = sub i32 %tmp00, undef
%tmp02 = icmp slt i32 %tmp01, 1
%tmp03 = select i1 %tmp02, i32 1, i32 %tmp01
%tmp04 = add nsw i32 %tmp03, -7
br label %BB2
BB2:
%tmp05 = phi i32 [ %tmp04, %BB1 ], [ %tmp06, %BB2 ]
%tmp06 = add i32 %tmp05, -8
%tmp07 = icmp sgt i32 %tmp06, 0
br i1 %tmp07, label %BB2, label %BB3
BB3:
%tmp08 = phi i32 [ %tmp05, %BB2 ]
%tmp09 = sub i32 %tmp00, undef
%tmp10 = icmp slt i32 %tmp09, 1
%tmp11 = select i1 %tmp10, i32 1, i32 %tmp09
%tmp12 = add nsw i32 %tmp11, -7
br label %BB4
BB4:
%tmp13 = phi i32 [ %tmp12, %BB3 ], [ %tmp14, %BB4 ]
%tmp14 = add i32 %tmp13, -8
%tmp15 = icmp sgt i32 %tmp14, 0
br i1 %tmp15, label %BB4, label %BB1
}
; CHECK-LABEL: @iv_scalar_steps_and_outside_users
; CHECK-LABEL: scalar.ph:
; CHECK-NEXT: %bc.resume.val = phi i64 [ 1002, %middle.block ], [ 0, %entry ]
; CHECK-LABEL: exit:
; CHECK-NEXT: %iv.lcssa = phi i64 [ %iv, %loop ], [ 1001, %middle.block ]
;
define i64 @iv_scalar_steps_and_outside_users(ptr %ptr) {
entry:
br label %loop
loop:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
%iv.next = add nuw i64 %iv, 1
%gep.ptr = getelementptr inbounds i64, ptr %ptr, i64 %iv
store i64 %iv, ptr %gep.ptr
%exitcond = icmp ugt i64 %iv, 1000
br i1 %exitcond, label %exit, label %loop
exit:
%iv.lcssa = phi i64 [ %iv, %loop ]
ret i64 %iv.lcssa
}
; %iv.2 is dead in the vector loop and only used outside the loop.
define i32 @iv_2_dead_in_loop_only_used_outside(ptr %ptr) {
; CHECK-LABEL: @iv_2_dead_in_loop_only_used_outside
; CHECK-LABEL: vector.body:
; CHECK-NEXT: [[INDEX:%.+]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.+]], %vector.body ]
; VEC-NEXT: [[VEC_IND:%.+]] = phi <2 x i64> [ <i64 0, i64 1>, %vector.ph ], [ [[VEC_IND_NEXT:%.+]], %vector.body ]
; CHECK: [[IV_0:%.+]] = add i64 [[INDEX]], 0
; VEC-NOT: add i64 [[INDEX]], 1
; CHECK-NOT: add i32 %offset.idx, 0
; CHECK-LABEL: scalar.ph:
; CHECK-NEXT: {{.+}} = phi i64 [ 1002, %middle.block ], [ 0, %entry ]
; CHECK-NEXT: {{.+}} = phi i32 [ 2004, %middle.block ], [ 0, %entry ]
; CHECK-LABEL: exit:
; CHECK-NEXT: %iv.2.lcssa = phi i32 [ %iv.2, %loop ], [ 2002, %middle.block ]
;
entry:
br label %loop
loop:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
%iv.2 = phi i32 [ 0, %entry ], [ %iv.2.next, %loop ]
%iv.next = add nuw i64 %iv, 1
%iv.2.next = add nuw i32 %iv.2, 2
%gep.ptr = getelementptr inbounds i64, ptr %ptr, i64 %iv
store i64 %iv, ptr %gep.ptr
%exitcond = icmp ugt i64 %iv, 1000
br i1 %exitcond, label %exit, label %loop
exit:
%iv.2.lcssa = phi i32 [ %iv.2, %loop ]
ret i32 %iv.2.lcssa
}
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