llvm/test/Transforms/ArgumentPromotion/byval.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
; RUN: opt < %s -passes=argpromotion -S | FileCheck %s

target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"

%struct.ss = type { i32, i64 }

define internal void @f(%struct.ss* byval(%struct.ss) align 4 %b) nounwind  {
; CHECK-LABEL: define {{[^@]+}}@f
; CHECK-SAME: (i32 [[B_0:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[TEMP:%.*]] = add i32 [[B_0]], 1
; CHECK-NEXT:    ret void
;
entry:
  %temp = getelementptr %struct.ss, %struct.ss* %b, i32 0, i32 0
  %temp1 = load i32, i32* %temp, align 4
  %temp2 = add i32 %temp1, 1
  store i32 %temp2, i32* %temp, align 4
  ret void
}

define internal void @g(%struct.ss* byval(%struct.ss) align 32 %b) nounwind {
; CHECK-LABEL: define {{[^@]+}}@g
; CHECK-SAME: (i32 [[B_0:%.*]]) #[[ATTR0]] {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[TEMP:%.*]] = add i32 [[B_0]], 1
; CHECK-NEXT:    ret void
;
entry:
  %temp = getelementptr %struct.ss, %struct.ss* %b, i32 0, i32 0
  %temp1 = load i32, i32* %temp, align 4
  %temp2 = add i32 %temp1, 1
  store i32 %temp2, i32* %temp, align 4
  ret void
}

; Don't transform if alignment isn't specified; the actual alignment
; is target-specific, and not exposed anywhere.
;
; (If we ever change byval so a missing alignment isn't legal, we can
; just delete this test.)
define internal void @h(%struct.ss* byval(%struct.ss) %b) nounwind {
; CHECK-LABEL: define {{[^@]+}}@h
; CHECK-SAME: (%struct.ss* byval([[STRUCT_SS:%.*]]) [[B:%.*]]) #[[ATTR0]] {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[TEMP:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[B]], i32 0, i32 0
; CHECK-NEXT:    [[TEMP1:%.*]] = load i32, i32* [[TEMP]], align 4
; CHECK-NEXT:    [[TEMP2:%.*]] = add i32 [[TEMP1]], 1
; CHECK-NEXT:    store i32 [[TEMP2]], i32* [[TEMP]], align 4
; CHECK-NEXT:    ret void
;
entry:
  %temp = getelementptr %struct.ss, %struct.ss* %b, i32 0, i32 0
  %temp1 = load i32, i32* %temp, align 4
  %temp2 = add i32 %temp1, 1
  store i32 %temp2, i32* %temp, align 4
  ret void
}

; Transform even if an argument is written to and then is loaded from.
define internal void @k(%struct.ss* byval(%struct.ss) align 4 %b) nounwind  {
; CHECK-LABEL: define {{[^@]+}}@k
; CHECK-SAME: (i32 [[B_0:%.*]]) #[[ATTR0]] {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[TEMP:%.*]] = add i32 [[B_0]], 1
; CHECK-NEXT:    ret void
;
entry:
  %temp = getelementptr %struct.ss, %struct.ss* %b, i32 0, i32 0
  %temp1 = load i32, i32* %temp, align 4
  %temp2 = add i32 %temp1, 1
  store i32 %temp2, i32* %temp, align 4
  %temp3 = load i32, i32* %temp, align 4
  ret void
}

; Transform even if a store instruction is the single user.
define internal void @l(%struct.ss* byval(%struct.ss) align 4 %b) nounwind  {
; CHECK-LABEL: define {{[^@]+}}@l
; CHECK-SAME: (i32 [[B_0:%.*]]) #[[ATTR0]] {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    ret void
;
entry:
  %temp = getelementptr %struct.ss, %struct.ss* %b, i32 0, i32 0
  store i32 1, i32* %temp, align 4
  ret void
}

; Transform all the arguments creating the required number of 'alloca's and
; then optimize them out.
define internal void @m(%struct.ss* byval(%struct.ss) align 4 %b, %struct.ss* byval(%struct.ss) align 4 %c) nounwind  {
; CHECK-LABEL: define {{[^@]+}}@m
; CHECK-SAME: (i32 [[B_0:%.*]], i32 [[C_0:%.*]], i64 [[C_1:%.*]]) #[[ATTR0]] {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[TEMP2:%.*]] = add i32 [[B_0]], 1
; CHECK-NEXT:    [[TEMP6:%.*]] = add i64 [[C_1]], 1
; CHECK-NEXT:    ret void
;
entry:
  %temp = getelementptr %struct.ss, %struct.ss* %b, i32 0, i32 0
  %temp1 = load i32, i32* %temp, align 4
  %temp2 = add i32 %temp1, 1
  store i32 %temp2, i32* %temp, align 4

  %temp3 = getelementptr %struct.ss, %struct.ss* %c, i32 0, i32 0
  store i32 %temp2, i32* %temp3, align 4
  
  %temp4 = getelementptr %struct.ss, %struct.ss* %c, i32 0, i32 1
  %temp5 = load i64, i64* %temp4, align 8
  %temp6 = add i64 %temp5, 1
  store i64 %temp6, i64* %temp4, align 8

  ret void
}

define i32 @main() nounwind  {
; CHECK-LABEL: define {{[^@]+}}@main
; CHECK-SAME: () #[[ATTR0]] {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[S:%.*]] = alloca [[STRUCT_SS:%.*]], align 32
; CHECK-NEXT:    [[TEMP1:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i32 0, i32 0
; CHECK-NEXT:    store i32 1, i32* [[TEMP1]], align 8
; CHECK-NEXT:    [[TEMP4:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i32 0, i32 1
; CHECK-NEXT:    store i64 2, i64* [[TEMP4]], align 4
; CHECK-NEXT:    [[S_0_0_0:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i64 0, i32 0
; CHECK-NEXT:    [[S_0_0_0_VAL:%.*]] = load i32, i32* [[S_0_0_0]], align 4
; CHECK-NEXT:    call void @f(i32 [[S_0_0_0_VAL]])
; CHECK-NEXT:    [[S_1_0_0:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i64 0, i32 0
; CHECK-NEXT:    [[S_1_0_0_VAL:%.*]] = load i32, i32* [[S_1_0_0]], align 4
; CHECK-NEXT:    call void @g(i32 [[S_1_0_0_VAL]])
; CHECK-NEXT:    call void @h(%struct.ss* byval([[STRUCT_SS]]) [[S]])
; CHECK-NEXT:    [[S_2_0_0:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i64 0, i32 0
; CHECK-NEXT:    [[S_2_0_0_VAL:%.*]] = load i32, i32* [[S_2_0_0]], align 4
; CHECK-NEXT:    call void @k(i32 [[S_2_0_0_VAL]])
; CHECK-NEXT:    [[S_3_0_0:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i64 0, i32 0
; CHECK-NEXT:    [[S_3_0_0_VAL:%.*]] = load i32, i32* [[S_3_0_0]], align 4
; CHECK-NEXT:    call void @l(i32 [[S_3_0_0_VAL]])
; CHECK-NEXT:    [[S_4_0_0:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i64 0, i32 0
; CHECK-NEXT:    [[S_4_0_0_VAL:%.*]] = load i32, i32* [[S_4_0_0]], align 4
; CHECK-NEXT:    [[S_4_1_0:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i64 0, i32 0
; CHECK-NEXT:    [[S_4_1_0_VAL:%.*]] = load i32, i32* [[S_4_1_0]], align 4
; CHECK-NEXT:    [[S_4_1_1:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i64 0, i32 1
; CHECK-NEXT:    [[S_4_1_1_VAL:%.*]] = load i64, i64* [[S_4_1_1]], align 8
; CHECK-NEXT:    call void @m(i32 [[S_4_0_0_VAL]], i32 [[S_4_1_0_VAL]], i64 [[S_4_1_1_VAL]])
; CHECK-NEXT:    ret i32 0
;
entry:
  %S = alloca %struct.ss, align 32
  %temp1 = getelementptr %struct.ss, %struct.ss* %S, i32 0, i32 0
  store i32 1, i32* %temp1, align 8
  %temp4 = getelementptr %struct.ss, %struct.ss* %S, i32 0, i32 1
  store i64 2, i64* %temp4, align 4
  call void @f(%struct.ss* byval(%struct.ss) align 4 %S) nounwind
  call void @g(%struct.ss* byval(%struct.ss) align 32 %S) nounwind
  call void @h(%struct.ss* byval(%struct.ss) %S) nounwind
  call void @k(%struct.ss* byval(%struct.ss) align 4 %S) nounwind
  call void @l(%struct.ss* byval(%struct.ss) align 4 %S) nounwind
  call void @m(%struct.ss* byval(%struct.ss) align 4 %S, %struct.ss* byval(%struct.ss) align 4 %S) nounwind
  ret i32 0
}