test/Transforms/InferAlignment/gep-recurrence.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -passes=infer-alignment -S %s | FileCheck %s

target datalayout = "p1:64:64:64:32"

declare i1 @cond()

define void @recur_i8_128(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_128(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 128
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 128
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_128_no_nusw(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_128_no_nusw(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr i8, ptr [[IV]], i64 128
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr i8, ptr %iv, i64 128
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_64(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_64(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 64
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 64
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_63(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_63(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 63
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 63
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_32(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_32(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 32
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 32
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_16(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_16(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 16
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 16
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_8(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_8(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 8
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 8
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_4(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_4(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 4
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 4
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_2(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_2(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 2
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 2
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_1(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_1(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 1
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 1
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_unknown_step(ptr align 128 %dst, i64 %off) {
; CHECK-LABEL: define void @recur_i8_unknown_step(
; CHECK-SAME: ptr align 128 [[DST:%.*]], i64 [[OFF:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 [[OFF]]
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 %off
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_step_known_multiple(ptr align 128 %dst, i64 %off) {
; CHECK-LABEL: define void @recur_i8_step_known_multiple(
; CHECK-SAME: ptr align 128 [[DST:%.*]], i64 [[OFF:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    [[UREM:%.*]] = urem i64 [[OFF]], 128
; CHECK-NEXT:    [[C_UREM:%.*]] = icmp eq i64 [[UREM]], 0
; CHECK-NEXT:    [[C_POS:%.*]] = icmp sge i64 [[OFF]], 0
; CHECK-NEXT:    [[AND:%.*]] = and i1 [[C_UREM]], [[C_POS]]
; CHECK-NEXT:    br i1 [[AND]], label %[[LOOP:.*]], label %[[EXIT:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 [[OFF]]
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  %urem = urem i64 %off, 128
  %c.urem = icmp eq i64 %urem, 0
  %c.pos = icmp sge i64 %off, 0
  %and = and i1 %c.urem, %c.pos
  br i1 %and, label %loop, label %exit

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 %off
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_i16_128(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_i16_128(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i16 128
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i16 128
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_i8_132(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_i8_132(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i8 -124
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i8 132
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i32_4(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i32_4(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i32, ptr [[IV]], i64 4
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i32, ptr %iv, i64 4
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i32_3(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i32_3(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i32, ptr [[IV]], i64 4
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i32, ptr %iv, i64 4
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_neg_128(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_neg_128(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 -128
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 -128
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_neg64(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_neg64(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 -64
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 -64
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_neg_63(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_neg_63(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 -63
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 -63
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}

define void @recur_i8_neg_32(ptr align 128 %dst) {
; CHECK-LABEL: define void @recur_i8_neg_32(
; CHECK-SAME: ptr align 128 [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    store i64 0, ptr [[IV]], align 1
; CHECK-NEXT:    [[IV_NEXT]] = getelementptr nusw i8, ptr [[IV]], i64 -32
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi ptr [ %dst, %entry ], [ %iv.next, %loop ]
  store i64 0, ptr %iv, align 1
  %iv.next = getelementptr nusw i8, ptr %iv, i64 -32
  %c = call i1 @cond()
  br i1 %c, label %loop, label %exit

exit:
  ret void
}