test/CodeGen/ARM/thumb_indirect_calls.ll

   1 ; RUN: llc -mtriple=thumbv4t-eabi %s -o - | FileCheck ---check-prefix=CHECK -check-prefix=CHECK-V4T %s
   2 ; RUN: llc -mtriple=thumbv5t-eabi %s -o - | FileCheck ---check-prefix=CHECK -check-prefix=CHECK-V5T %s
   3
   4 @f = common global void (i32)* null, align 4
   5
   6 ; CHECK-LABEL foo:
   7 define void @foo(i32 %x) {
   8 entry:
   9   %0 = load void (i32)*, void (i32)** @f, align 4
  10   tail call void %0(i32 %x)
  11   ret void
  12
  13 ; CHECK: ldr [[TMP:r[0-3]]], [[F:\.[A-Z0-9_]+]]
  14 ; CHECK: ldr [[CALLEE:r[0-3]]], {{\[}}[[TMP]]{{\]}}
  15
  16 ; CHECK-V4T-NOT: blx
  17 ; CHECK-V4T: bl [[INDIRECT_PAD:\.Ltmp[0-9]+]]
  18 ; CHECK-V4T: [[F]]:
  19 ; CHECK-V4T: [[INDIRECT_PAD]]:
  20 ; CHECK-V4T-NEXT: bx [[CALLEE]]
  21 ; CHECK-V5T: blx [[CALLEE]]
  22 }
  23
  24 ; CHECK-LABEL bar:
  25 define void @bar(void (i32)* nocapture %g, i32 %x, void (i32)* nocapture %h) {
  26 entry:
  27   tail call void %g(i32 %x)
  28   tail call void %h(i32 %x)
  29   ret void
  30
  31 ; CHECK-V4T: bl [[INDIRECT_PAD1:\.Ltmp[0-9]+]]
  32 ; CHECK-V4T: bl [[INDIRECT_PAD2:\.Ltmp[0-9]+]]
  33 ; CHECK-V4T: [[INDIRECT_PAD1]]:
  34 ; CHECK-V4T-NEXT: bx
  35 ; CHECK-V4T: [[INDIRECT_PAD2]]:
  36 ; CHECK-V4T-NEXT: bx
  37 ; CHECK-V5T: blx
  38 ; CHECK-V5T: blx
  39 }
  40