test/Transforms/LoopStrengthReduce/X86/lifetime-use.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -S -passes=loop-reduce -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s

define void @test(ptr %p, i64 %idx) {
; CHECK-LABEL: define void @test(
; CHECK-SAME: ptr [[P:%.*]], i64 [[IDX:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    [[ALLOCA:%.*]] = alloca [4 x [4 x i32]], align 16
; CHECK-NEXT:    call void @llvm.lifetime.start.p0(ptr [[ALLOCA]])
; CHECK-NEXT:    [[TMP0:%.*]] = shl i64 [[IDX]], 6
; CHECK-NEXT:    [[TMP1:%.*]] = add nuw nsw i64 [[TMP0]], 48
; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[P]], i64 [[TMP1]]
; CHECK-NEXT:    [[SCEVGEP3:%.*]] = getelementptr nuw i8, ptr [[ALLOCA]], i64 48
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[LSR_IV:%.*]] = phi i64 [ [[LSR_IV_NEXT:%.*]], %[[LOOP]] ], [ -8, %[[ENTRY]] ]
; CHECK-NEXT:    [[TMP2:%.*]] = shl nsw i64 [[LSR_IV]], 2
; CHECK-NEXT:    [[SCEVGEP8:%.*]] = getelementptr i8, ptr [[P]], i64 [[TMP2]]
; CHECK-NEXT:    [[SCEVGEP9:%.*]] = getelementptr i8, ptr [[SCEVGEP8]], i64 32
; CHECK-NEXT:    [[TMP3:%.*]] = load i32, ptr [[SCEVGEP9]], align 4
; CHECK-NEXT:    [[SCEVGEP6:%.*]] = getelementptr i8, ptr [[P]], i64 [[LSR_IV]]
; CHECK-NEXT:    [[SCEVGEP7:%.*]] = getelementptr i8, ptr [[SCEVGEP6]], i64 8
; CHECK-NEXT:    [[TMP4:%.*]] = load i32, ptr [[SCEVGEP7]], align 4
; CHECK-NEXT:    [[SCEVGEP4:%.*]] = getelementptr i8, ptr [[SCEVGEP3]], i64 [[LSR_IV]]
; CHECK-NEXT:    [[SCEVGEP5:%.*]] = getelementptr i8, ptr [[SCEVGEP4]], i64 8
; CHECK-NEXT:    [[TMP5:%.*]] = load i32, ptr [[SCEVGEP5]], align 4
; CHECK-NEXT:    [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[SCEVGEP]], i64 [[LSR_IV]]
; CHECK-NEXT:    [[SCEVGEP2:%.*]] = getelementptr i8, ptr [[SCEVGEP1]], i64 8
; CHECK-NEXT:    [[TMP6:%.*]] = load i32, ptr [[SCEVGEP2]], align 4
; CHECK-NEXT:    [[LSR_IV_NEXT]] = add nsw i64 [[LSR_IV]], 4
; CHECK-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[LSR_IV_NEXT]], 0
; CHECK-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT:.*]], label %[[LOOP]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    call void @llvm.lifetime.end.p0(ptr [[ALLOCA]])
; CHECK-NEXT:    ret void
;
entry:
  %alloca = alloca [4 x [4 x i32]], align 16
  call void @llvm.lifetime.start.p0(ptr %alloca)
  br label %loop

loop:
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %loop ]
  %gep1 = getelementptr [4 x [12 x [4 x [4 x i32]]]], ptr %p, i64 0, i64 0, i64 0, i64 %indvars.iv, i64 0
  %0 = load i32, ptr %gep1, align 4
  %gep2 = getelementptr [6 x [4 x [4 x i32]]], ptr %p, i64 0, i64 0, i64 0, i64 %indvars.iv
  %1 = load i32, ptr %gep2, align 4
  %gep3 = getelementptr [4 x [4 x i32]], ptr %alloca, i64 0, i64 3, i64 %indvars.iv
  %2 = load i32, ptr %gep3, align 4
  %gep4 = getelementptr [6 x [4 x [4 x i32]]], ptr %p, i64 0, i64 %idx, i64 3, i64 %indvars.iv
  %3 = load i32, ptr %gep4, align 4
  %indvars.iv.next = add i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv, 1
  br i1 %exitcond.not, label %exit, label %loop

exit:
  call void @llvm.lifetime.end.p0(ptr %alloca)
  ret void
}