test/Transforms/SROA/reuse_lifetime_markers.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -sroa -S | FileCheck %s
;
; Make sure we reuse the lifetime marker and do not create a new one that looks the same but without the call site attributes.
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"

; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #0

; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg) #0

define hidden void @old_markers() {
;
; CHECK-LABEL: define {{[^@]+}}@old_markers(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[VV_SROA_4:%.*]] = alloca [3 x i32*]
; CHECK-NEXT:    [[VV_SROA_4_0__SROA_CAST61:%.*]] = bitcast [3 x i32*]* [[VV_SROA_4]] to i8*
; CHECK-NEXT:    [[VV_SROA_4_0__SROA_CAST94:%.*]] = bitcast [3 x i32*]* [[VV_SROA_4]] to i8*
; CHECK-NEXT:    call void @llvm.lifetime.start.p0i8(i64 24, i8* nonnull align 8 dereferenceable(24) [[VV_SROA_4_0__SROA_CAST94]])
; CHECK-NEXT:    br i1 undef, label [[DO_BODY:%.*]], label [[IF_END31:%.*]]
; CHECK:       do.body:
; CHECK-NEXT:    ret void
; CHECK:       if.end31:
; CHECK-NEXT:    call void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nonnull align 8 dereferenceable(24) [[VV_SROA_4_0__SROA_CAST61]], i8* noalias nonnull align 8 undef, i64 24, i1 false)
; CHECK-NEXT:    unreachable
;
entry:
  %vv.sroa.4 = alloca [3 x i32*]
  %vv.sroa.4.0..sroa_cast61 = bitcast [3 x i32*]* %vv.sroa.4 to i8*
  %vv.sroa.4.0..sroa_cast94 = bitcast [3 x i32*]* %vv.sroa.4 to i8*
  call void @llvm.lifetime.start.p0i8(i64 24, i8* nonnull align 8 dereferenceable(24) %vv.sroa.4.0..sroa_cast94)
  br i1 undef, label %do.body, label %if.end31

do.body:                                          ; preds = %entry
  ret void

if.end31:                                         ; preds = %entry
  call void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nonnull align 8 dereferenceable(24) %vv.sroa.4.0..sroa_cast61, i8* noalias nonnull align 8 undef, i64 24, i1 false)
  unreachable
}

define hidden void @new_markers() {
;
; CHECK-LABEL: define {{[^@]+}}@new_markers(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[VV_SROA_4:%.*]] = alloca [3 x i32*]
; CHECK-NEXT:    [[VV_SROA_4_0__SROA_CAST61:%.*]] = bitcast [3 x i32*]* [[VV_SROA_4]] to i8*
; CHECK-NEXT:    br i1 undef, label [[DO_BODY:%.*]], label [[IF_END31:%.*]]
; CHECK:       do.body:
; CHECK-NEXT:    ret void
; CHECK:       if.end31:
; CHECK-NEXT:    call void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nonnull align 8 dereferenceable(24) [[VV_SROA_4_0__SROA_CAST61]], i8* noalias nonnull align 8 undef, i64 24, i1 false)
; CHECK-NEXT:    unreachable
;
entry:
  %vv.sroa.4 = alloca [3 x i32*]
  %vv.sroa.4.0..sroa_cast61 = bitcast [3 x i32*]* %vv.sroa.4 to i8*
  %vv.sroa.4.0..sroa_cast94 = bitcast [3 x i32*]* %vv.sroa.4 to i8*
  call void @llvm.lifetime.start.p0i8(i64 8, i8* nonnull align 8 dereferenceable(24) %vv.sroa.4.0..sroa_cast94)
  br i1 undef, label %do.body, label %if.end31

do.body:                                          ; preds = %entry
  ret void

if.end31:                                         ; preds = %entry
  call void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nonnull align 8 dereferenceable(24) %vv.sroa.4.0..sroa_cast61, i8* noalias nonnull align 8 undef, i64 24, i1 false)
  unreachable
}