test/CodeGen/Thumb2/bti-outliner-1.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=thumbv7m-eabi %s -o - | FileCheck %s

; Check that each outlining candidate and the outlined function are in agreement
; with regard to whether BTI insertion is enabled or not.

; volatile int a, b, c, d, e, f;
;
; int x(int p) {
;   int r = (a + b) / (c + d) * e + f;
;   return r + 1;
; }
;
; __attribute__((target("branch-protection=none")))
; int y(int p) {
;   int r = (a + b) / (c + d) * e + f;
;   return r + 2;
; }
;
; __attribute__((target("branch-protection=bti")))
; int z(int p) {
;   int r = (a + b) / (c + d) * e + f;
;   return r + 3;
; }

@a = hidden global i32 0, align 4
@b = hidden global i32 0, align 4
@c = hidden global i32 0, align 4
@d = hidden global i32 0, align 4
@e = hidden global i32 0, align 4
@f = hidden global i32 0, align 4

define hidden i32 @x(i32 %p) local_unnamed_addr #0 {
; CHECK-LABEL: x:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    ldr r0, .LCPI0_0
; CHECK-NEXT:    .save {lr}
; CHECK-NEXT:    str lr, [sp, #-8]!
; CHECK-NEXT:    bl OUTLINED_FUNCTION_0
; CHECK-NEXT:    ldr lr, [sp], #8
; CHECK-NEXT:    adds r0, #1
; CHECK-NEXT:    bx lr
; CHECK-NEXT:    .p2align 2
; CHECK-NEXT:  @ %bb.1:
; CHECK-NEXT:  .LCPI0_0:
; CHECK-NEXT:    .long .L_MergedGlobals
entry:
  %0 = load volatile i32, i32* @a, align 4
  %1 = load volatile i32, i32* @b, align 4
  %add = add nsw i32 %1, %0
  %2 = load volatile i32, i32* @c, align 4
  %3 = load volatile i32, i32* @d, align 4
  %add1 = add nsw i32 %3, %2
  %div = sdiv i32 %add, %add1
  %4 = load volatile i32, i32* @e, align 4
  %mul = mul nsw i32 %4, %div
  %5 = load volatile i32, i32* @f, align 4
  %add2 = add nsw i32 %mul, %5
  %add3 = add nsw i32 %add2, 1
  ret i32 %add3
}

define hidden i32 @y(i32 %p) local_unnamed_addr #1 {
; CHECK-LABEL: y:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    ldr r0, .LCPI1_0
; CHECK-NEXT:    .save {lr}
; CHECK-NEXT:    str lr, [sp, #-8]!
; CHECK-NEXT:    bl OUTLINED_FUNCTION_0
; CHECK-NEXT:    ldr lr, [sp], #8
; CHECK-NEXT:    adds r0, #2
; CHECK-NEXT:    bx lr
; CHECK-NEXT:    .p2align 2
; CHECK-NEXT:  @ %bb.1:
; CHECK-NEXT:  .LCPI1_0:
; CHECK-NEXT:    .long .L_MergedGlobals
entry:
  %0 = load volatile i32, i32* @a, align 4
  %1 = load volatile i32, i32* @b, align 4
  %add = add nsw i32 %1, %0
  %2 = load volatile i32, i32* @c, align 4
  %3 = load volatile i32, i32* @d, align 4
  %add1 = add nsw i32 %3, %2
  %div = sdiv i32 %add, %add1
  %4 = load volatile i32, i32* @e, align 4
  %mul = mul nsw i32 %4, %div
  %5 = load volatile i32, i32* @f, align 4
  %add2 = add nsw i32 %mul, %5
  %add3 = add nsw i32 %add2, 2
  ret i32 %add3
}

define hidden i32 @z(i32 %p) local_unnamed_addr #2 {
; CHECK-LABEL: z:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    bti
; CHECK-NEXT:    ldr r0, .LCPI2_0
; CHECK-NEXT:    ldr r1, [r0]
; CHECK-NEXT:    ldr r2, [r0, #4]
; CHECK-NEXT:    add r1, r2
; CHECK-NEXT:    ldr r2, [r0, #8]
; CHECK-NEXT:    ldr r3, [r0, #12]
; CHECK-NEXT:    add r2, r3
; CHECK-NEXT:    sdiv r1, r1, r2
; CHECK-NEXT:    ldr r2, [r0, #16]
; CHECK-NEXT:    ldr r0, [r0, #20]
; CHECK-NEXT:    mla r0, r2, r1, r0
; CHECK-NEXT:    adds r0, #3
; CHECK-NEXT:    bx lr
; CHECK-NEXT:    .p2align 2
; CHECK-NEXT:  @ %bb.1:
; CHECK-NEXT:  .LCPI2_0:
; CHECK-NEXT:    .long .L_MergedGlobals
entry:
  %0 = load volatile i32, i32* @a, align 4
  %1 = load volatile i32, i32* @b, align 4
  %add = add nsw i32 %1, %0
  %2 = load volatile i32, i32* @c, align 4
  %3 = load volatile i32, i32* @d, align 4
  %add1 = add nsw i32 %3, %2
  %div = sdiv i32 %add, %add1
  %4 = load volatile i32, i32* @e, align 4
  %mul = mul nsw i32 %4, %div
  %5 = load volatile i32, i32* @f, align 4
  %add2 = add nsw i32 %mul, %5
  %add3 = add nsw i32 %add2, 3
  ret i32 %add3
}

attributes #0 = { minsize nofree norecurse nounwind optsize  }
attributes #1 = { minsize nofree norecurse nounwind optsize "branch-target-enforcement"="false" }
attributes #2 = { minsize nofree norecurse nounwind optsize "branch-target-enforcement"="true"  }

!llvm.module.flags = !{!0}

!0 = !{i32 8, !"branch-target-enforcement", i32 0}