test/CodeGen/Thumb2/2009-10-15-ITBlockBranch.ll

   1 ; RUN: llc < %s -mtriple=thumbv7-eabi -mcpu=cortex-a8 -float-abi=hard | FileCheck %s
   2 ; RUN: llc < %s -mtriple=thumbv7-eabi -mcpu=cortex-a8 -float-abi=hard -regalloc=basic | FileCheck %s
   3 ; PR5204
   4
   5 %"struct.__gnu_cxx::__normal_iterator<char*,std::basic_string<char, std::char_traits<char>, std::allocator<char> > >" = type { i8* }
   6 %"struct.__gnu_cxx::new_allocator<char>" = type <{ i8 }>
   7 %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >" = type { %"struct.__gnu_cxx::__normal_iterator<char*,std::basic_string<char, std::char_traits<char>, std::allocator<char> > >" }
   8 %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >::_Rep" = type { %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >::_Rep_base" }
   9 %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >::_Rep_base" = type { i32, i32, i32 }
  10
  11
  12 define weak arm_aapcs_vfpcc i32 @_ZNKSs7compareERKSs(%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* %this, %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* %__str) {
  13 ; CHECK: _ZNKSs7compareERKSs:
  14 ; CHECK:      it  eq
  15 ; CHECK-NEXT: subeq{{(.w)?}} r0, r{{[0-9]+}}, r{{[0-9]+}}
  16 ; CHECK-NEXT: pop.w
  17 entry:
  18   %0 = tail call arm_aapcs_vfpcc  i32 @_ZNKSs4sizeEv(%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* %this) ; <i32> [#uses=3]
  19   %1 = tail call arm_aapcs_vfpcc  i32 @_ZNKSs4sizeEv(%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* %__str) ; <i32> [#uses=3]
  20   %2 = icmp ult i32 %1, %0                        ; <i1> [#uses=1]
  21   %3 = select i1 %2, i32 %1, i32 %0               ; <i32> [#uses=1]
  22   %4 = tail call arm_aapcs_vfpcc  i8* @_ZNKSs7_M_dataEv(%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* %this) ; <i8*> [#uses=1]
  23   %5 = tail call arm_aapcs_vfpcc  i8* @_ZNKSs4dataEv(%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* %__str) ; <i8*> [#uses=1]
  24   %6 = tail call arm_aapcs_vfpcc  i32 @memcmp(i8* %4, i8* %5, i32 %3) nounwind readonly ; <i32> [#uses=2]
  25   %7 = icmp eq i32 %6, 0                          ; <i1> [#uses=1]
  26   br i1 %7, label %bb, label %bb1
  27
  28 bb:                                               ; preds = %entry
  29   %8 = sub i32 %0, %1                             ; <i32> [#uses=1]
  30   ret i32 %8
  31
  32 bb1:                                              ; preds = %entry
  33   ret i32 %6
  34 }
  35
  36 declare arm_aapcs_vfpcc i32 @memcmp(i8* nocapture, i8* nocapture, i32) nounwind readonly
  37
  38 declare arm_aapcs_vfpcc i32 @_ZNKSs4sizeEv(%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* %this)
  39
  40 declare arm_aapcs_vfpcc i8* @_ZNKSs7_M_dataEv(%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* %this)
  41
  42 declare arm_aapcs_vfpcc i8* @_ZNKSs4dataEv(%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* %this)