llvm/test/Transforms/LoopIdiom/pr70008.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
; RUN: opt -S -passes=loop-idiom < %s | FileCheck %s

; Make sure we don't assert if the BECount is larger than 64 bits.

define void @test(ptr %p) {
; CHECK-LABEL: define void @test(
; CHECK-SAME: ptr [[P:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    call void @llvm.memset.p0.i64(ptr align 4 [[P]], i8 0, i64 0, i1 false)
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[IV:%.*]] = phi i128 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT:    [[IV_TRUNC:%.*]] = trunc i128 [[IV]] to i64
; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr { i64, i64 }, ptr [[P]], i64 [[IV_TRUNC]]
; CHECK-NEXT:    [[GEP2:%.*]] = getelementptr { i64, i64 }, ptr [[P]], i64 [[IV_TRUNC]], i32 1
; CHECK-NEXT:    [[INC]] = add i128 [[IV]], 1
; CHECK-NEXT:    [[TOBOOL_NOT:%.*]] = icmp eq i128 [[INC]], 0
; CHECK-NEXT:    br i1 [[TOBOOL_NOT]], label [[EXIT:%.*]], label [[FOR_BODY]]
; CHECK:       exit:
; CHECK-NEXT:    ret void
;
entry:
  br label %for.body

for.body:
  %iv = phi i128 [ 0, %entry ], [ %inc, %for.body ]
  %iv.trunc = trunc i128 %iv to i64
  %gep1 = getelementptr { i64, i64 }, ptr %p, i64 %iv.trunc
  %gep2 = getelementptr { i64, i64 }, ptr %p, i64 %iv.trunc, i32 1
  store i64 0, ptr %gep1
  store i64 0, ptr %gep2
  %inc = add i128 %iv, 1
  %tobool.not = icmp eq i128 %inc, 0
  br i1 %tobool.not, label %exit, label %for.body

exit:
  ret void
}