llvm/test/Transforms/LoopStrengthReduce/RISCV/term-fold-crash.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -S -passes=loop-reduce,loop-term-fold -mtriple=riscv64-unknown-linux-gnu < %s | FileCheck %s

define void @test(ptr %p, i8 %arg, i32 %start) {
; CHECK-LABEL: define void @test(
; CHECK-SAME: ptr [[P:%.*]], i8 [[ARG:%.*]], i32 [[START:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CONV:%.*]] = zext i8 [[ARG]] to i32
; CHECK-NEXT:    [[SHR:%.*]] = lshr i32 [[CONV]], 1
; CHECK-NEXT:    [[TMP0:%.*]] = add i32 [[START]], [[SHR]]
; CHECK-NEXT:    [[TMP1:%.*]] = add i32 [[TMP0]], 1
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[ADD810:%.*]] = phi i32 [ [[START]], [[ENTRY:%.*]] ], [ [[ADD:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT:    [[IDXPROM2:%.*]] = zext i32 [[ADD810]] to i64
; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr i8, ptr [[P]], i64 [[IDXPROM2]]
; CHECK-NEXT:    [[V:%.*]] = load i8, ptr [[ARRAYIDX3]], align 1
; CHECK-NEXT:    [[ADD]] = add i32 [[ADD810]], 1
; CHECK-NEXT:    [[LSR_FOLD_TERM_COND_REPLACED_TERM_COND:%.*]] = icmp eq i32 [[ADD]], [[TMP1]]
; CHECK-NEXT:    br i1 [[LSR_FOLD_TERM_COND_REPLACED_TERM_COND]], label [[EXIT:%.*]], label [[FOR_BODY]]
; CHECK:       exit:
; CHECK-NEXT:    ret void
;
entry:
  %conv = zext i8 %arg to i32
  %shr = lshr i32 %conv, 1
  %wide.trip.count = zext nneg i32 %shr to i64
  br label %for.body

for.body:
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %add810 = phi i32 [ %start, %entry ], [ %add, %for.body ]
  %idxprom2 = zext i32 %add810 to i64
  %arrayidx3 = getelementptr i8, ptr %p, i64 %idxprom2
  %v = load i8, ptr %arrayidx3, align 1
  %add = add i32 %add810, 1
  %indvars.iv.next = add i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv, %wide.trip.count
  br i1 %exitcond.not, label %exit, label %for.body

exit:
  ret void
}