IPA function summary for Read_LDC_Voltage/0 inlinable
  global time:     4.000000
  self size:       5
  global size:     5
  min size:       0
  self stack:      0
  global stack:    0
    size:2.000000, time:2.000000
    size:3.000000, time:2.000000,  executed if:(not inlined)
  calls:


Flattening functions:
Overall time estimate: 4.000000 weighted by profile: 0.000000

Deciding on inlining of small functions.  Starting with size 0.
Enqueueing calls in Read_LDC_Voltage/0.

Reclaiming functions:
Reclaiming variables:
Clearing address taken flags:

Deciding on functions to be inlined into all callers and removing useless speculations:
Overall time estimate: 4.000000 weighted by profile: 0.000000

Why inlining failed?
IPA function summary for Read_LDC_Voltage/0 inlinable
  global time:     4.000000
  self size:       5
  global size:     5
  min size:       0
  self stack:      0
  global stack:    0
    size:2.000000, time:2.000000
    size:3.000000, time:2.000000,  executed if:(not inlined)
  calls:

Symbol table:

GV_can_rx_ldc_v/2 (GV_can_rx_ldc_v) @068a5288
  Type: variable
  Body removed by symtab_remove_unreachable_nodes
  Visibility: external public
  References: 
  Referring: Read_LDC_Voltage/0 (write)
  Availability: not_available
  Varpool flags:
ECU3/1 (ECU3) @068a5240
  Type: variable
  Body removed by symtab_remove_unreachable_nodes
  Visibility: external public
  References: 
  Referring: Read_LDC_Voltage/0 (read)
  Availability: not_available
  Varpool flags:
Read_LDC_Voltage/0 (Read_LDC_Voltage) @06af7ee0
  Type: function definition analyzed
  Visibility: externally_visible public
  References: ECU3/1 (read)GV_can_rx_ldc_v/2 (write)
  Referring: 
  Availability: available
  Function flags: count:1073741824 (estimated locally) body optimize_size
  Called by: 
  Calls: 

;; Function Read_LDC_Voltage (Read_LDC_Voltage, funcdef_no=0, decl_uid=5277, cgraph_uid=1, symbol_order=0)

Read_LDC_Voltage ()
{
  <unnamed-unsigned:10> _1;
  unsigned char _2;

  <bb 2> [local count: 1073741824]:
  # DEBUG BEGIN_STMT
  _1 = ECU3.RX.CH0_BCM_VCU_Signal4_0x595.LDC_INP_VOLT;
  _2 = (unsigned char) _1;
  GV_can_rx_ldc_v = _2;
  return;

}