llvm/test/CodeGen/X86/basic-block-sections-pragma-sections.ll

   1 ;; Tests for basic block sections applied on a function in a custom section.
   2 ; RUN: llc < %s -mtriple=x86_64-pc-linux -basic-block-sections=all | FileCheck %s
   3 ; RUN: llc < %s -mtriple=x86_64-pc-linux -function-sections -basic-block-sections=all | FileCheck %s
   4 ; RUN: echo "!_Z3fooi" > %t1.list.txt
   5 ; RUN: echo "!!2" >> %t1.list.txt
   6 ; RUN: llc < %s -mtriple=x86_64-pc-linux -basic-block-sections=%t1.list.txt | FileCheck %s --check-prefix=LIST1
   7 ; RUN: llc < %s -mtriple=x86_64-pc-linux -function-sections -basic-block-sections=%t1.list.txt | FileCheck %s --check-prefix=LIST1
   8 ; RUN: echo "!_Z3fooi" > %t2.list.txt
   9 ; RUN: echo "!!0" >> %t2.list.txt
  10 ; RUN: llc < %s -mtriple=x86_64-pc-linux -basic-block-sections=%t2.list.txt | FileCheck %s --check-prefix=LIST2
  11 ; RUN: llc < %s -mtriple=x86_64-pc-linux -function-sections -basic-block-sections=%t2.list.txt | FileCheck %s --check-prefix=LIST2
  12
  13
  14 ; CHECK: .section       foo_section,"ax",@progbits,unique,1
  15 ; CHECK-LABEL: _Z3fooi:
  16 ; CHECK: .section       foo_section,"ax",@progbits,unique,2
  17 ; CHECK-NEXT: _Z3fooi.__part.1:
  18 ; CHECK: .section       foo_section,"ax",@progbits,unique,3
  19 ; CHECK-NEXT: _Z3fooi.__part.2:
  20
  21 ; LIST1: .section       foo_section,"ax",@progbits,unique,1
  22 ; LIST1-LABEL: _Z3fooi:
  23 ; LIST1: .section       foo_section,"ax",@progbits,unique,2
  24 ; LIST1-NEXT: _Z3fooi.__part.0:
  25 ; LIST1-NOT: .section   foo_section,"ax",@progbits,unique,3
  26
  27 ; LIST2: .section       foo_section,"ax",@progbits,unique,1
  28 ; LIST2-LABEL: _Z3fooi:
  29 ; LIST2: .section       foo_section,"ax",@progbits,unique,2
  30 ; LIST2-NEXT: _Z3fooi.cold:
  31 ; LIST2-NOT: .section   foo_section,"ax",@progbits,unique,3
  32
  33 ;; Source to generate the IR:
  34 ;; #pragma clang section text = "foo_section"
  35 ;; int foo(int n) {
  36 ;;   if (n < 0)
  37 ;;     exit(-1);
  38 ;;   return 0;
  39 ;; }
  40
  41 define dso_local i32 @_Z3fooi(i32 %n) local_unnamed_addr section "foo_section" {
  42 entry:
  43   %cmp = icmp slt i32 %n, 0
  44   br i1 %cmp, label %if.then, label %if.end
  45
  46 if.then:                                          ; preds = %entry
  47   tail call void @exit(i32 -1) #2
  48   unreachable
  49
  50 if.end:                                           ; preds = %entry
  51   ret i32 0
  52 }
  53
  54 declare dso_local void @exit(i32) local_unnamed_addr