llvm/test/Transforms/CodeGenPrepare/revert-constant-ptr-propagation-on-calls.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes='require<profile-summary>,function(codegenprepare)' -mtriple=aarch64-none-linux-gnu < %s | FileCheck %s
; REQUIRES: aarch64-registered-target

%struct.S = type { i8 }
%struct.X = type { i32 }

@g_getS = internal global %struct.S zeroinitializer, align 1
@g_getX = internal global %struct.X zeroinitializer, align 1
@guard = internal global i64 0, align 8

declare ptr @getS_dec()
declare extern_weak dllimport ptr @getS_dllimport_function()

define ptr @getS() personality ptr @__gxx_personality_v0 {
entry:
  %guard = load atomic i8, ptr @guard acquire, align 8
  %mask = and i8 %guard, 1
  %cond = icmp eq i8 %mask, 0
  br i1 %cond, label %to_be_init, label %return

to_be_init:                                       ; preds = %entry
  %is_init = call i32 @__cxa_guard_acquire(ptr @guard)
  %cond.2 = icmp ne i32 %is_init, 0
  br i1 %cond.2, label %ctor, label %return

ctor:                                             ; preds = %to_be_init
  invoke void @S_ctor(ptr @g_getS)
  to label %continue unwind label %landing_pad

continue:                                         ; preds = %ctor
  call void @__cxa_guard_release(ptr @guard)
  br label %return

return:                                           ; preds = %continue, %to_be_init, %entry
  ret ptr @g_getS

landing_pad:                                      ; preds = %ctor
  %lp = landingpad { ptr, i32 } cleanup
  call void @__cxa_guard_abort(ptr @guard)
  resume { ptr, i32 } %lp
}

define ptr @getS_or_getX(i1 %cond) {
entry:
  %result = select i1 %cond, ptr @g_getS, ptr @g_getX
  ret ptr %result
}

define weak ptr @getS_weak_function() {
entry:
  ret ptr @g_getS
}

define linkonce_odr ptr @getS_linkonce_odr_function() {
entry:
  ret ptr @g_getS
}

; May revert propagation.
define i32 @caller_1() {
; CHECK-LABEL: @caller_1(
; CHECK-NEXT:    [[GETS_PTR:%.*]] = call ptr @getS()
; CHECK-NEXT:    [[GETI:%.*]] = call i32 @S_getI(ptr [[GETS_PTR]])
; CHECK-NEXT:    ret i32 [[GETI]]
;
  %getS_ptr = call ptr @getS()
  %getI = call i32 @S_getI(ptr @g_getS)
  ret i32 %getI
}

; Cannot revert propagation due to use appearing in a different basic block.
define i32 @caller_2() {
; CHECK-LABEL: @caller_2(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[GETS_PTR:%.*]] = call ptr @getS()
; CHECK-NEXT:    br label [[USE:%.*]]
; CHECK:       use:
; CHECK-NEXT:    [[GETI:%.*]] = call i32 @S_getI(ptr [[GETS_PTR]])
; CHECK-NEXT:    ret i32 [[GETI]]
;
entry:
  %getS_ptr = call ptr @getS()
  br label %use

use:                                              ; preds = %entry
  %getI = call i32 @S_getI(ptr %getS_ptr)
  ret i32 %getI
}

; Cannot revert propagation due to use before call.
define i32 @caller_3() {
; CHECK-LABEL: @caller_3(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[GETI:%.*]] = call i32 @S_getI(ptr @g_getS)
; CHECK-NEXT:    [[GETS_PTR:%.*]] = call ptr @getS()
; CHECK-NEXT:    ret i32 [[GETI]]
;
entry:
  %getI = call i32 @S_getI(ptr @g_getS)
  %getS_ptr = call ptr @getS()
  ret i32 %getI
}

; Cannot revert propagation due to non-uniform returned constant.
define i32 @caller_4(i1 %cond) {
; CHECK-LABEL: @caller_4(
; CHECK-NEXT:    [[GETS_OR_GETX_PTR:%.*]] = call ptr @getS_or_getX(i1 [[COND:%.*]])
; CHECK-NEXT:    [[GETI:%.*]] = call i32 @S_getI(ptr @g_getS)
; CHECK-NEXT:    ret i32 [[GETI]]
;
  %getS_or_getX_ptr = call ptr @getS_or_getX(i1 %cond)
  %getI = call i32 @S_getI(ptr @g_getS)
  ret i32 %getI
}

; Cannot revert propagation due to weak-linkage callee.
define i32 @caller_5() {
; CHECK-LABEL: @caller_5(
; CHECK-NEXT:    [[GETS_PTR:%.*]] = call ptr @getS_weak_function()
; CHECK-NEXT:    [[GETI:%.*]] = call i32 @S_getI(ptr @g_getS)
; CHECK-NEXT:    ret i32 [[GETI]]
;
  %getS_ptr = call ptr @getS_weak_function()
  %getI = call i32 @S_getI(ptr @g_getS)
  ret i32 %getI
}

; Cannot revert propagation due to callee with external function definition.
define i32 @caller_6() {
; CHECK-LABEL: @caller_6(
; CHECK-NEXT:    [[GETS_PTR:%.*]] = call ptr @getS_dec()
; CHECK-NEXT:    [[GETI:%.*]] = call i32 @S_getI(ptr @g_getS)
; CHECK-NEXT:    ret i32 [[GETI]]
;
  %getS_ptr = call ptr @getS_dec()
  %getI = call i32 @S_getI(ptr @g_getS)
  ret i32 %getI
}

; Cannot revert propagation due to callee with DLLImport storage class.
define i32 @caller_7() {
; CHECK-LABEL: @caller_7(
; CHECK-NEXT:    [[GETS_PTR:%.*]] = call ptr @getS_dllimport_function()
; CHECK-NEXT:    [[GETI:%.*]] = call i32 @S_getI(ptr @g_getS)
; CHECK-NEXT:    ret i32 [[GETI]]
;
  %getS_ptr = call ptr @getS_dllimport_function()
  %getI = call i32 @S_getI(ptr @g_getS)
  ret i32 %getI
}

; Cannot revert propagation due to callee whose definition may be overridden.
define i32 @caller_8() {
; CHECK-LABEL: @caller_8(
; CHECK-NEXT:    [[GETS_PTR:%.*]] = call ptr @getS_linkonce_odr_function()
; CHECK-NEXT:    [[GETI:%.*]] = call i32 @S_getI(ptr @g_getS)
; CHECK-NEXT:    ret i32 [[GETI]]
;
  %getS_ptr = call ptr @getS_linkonce_odr_function()
  %getI = call i32 @S_getI(ptr @g_getS)
  ret i32 %getI
}

declare i32 @__cxa_guard_acquire(ptr)
declare void @S_ctor(ptr)
declare i32 @S_getI(ptr)
declare void @__cxa_guard_abort(ptr)
declare void @__cxa_guard_release(ptr)
declare i32 @__gxx_personality_v0(...)