llvm/test/Transforms/Attributor/ArgumentPromotion/alignment.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals
; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal  -attributor-annotate-decl-cs  -S < %s | FileCheck %s --check-prefixes=CHECK,TUNIT
; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal  -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,CGSCC

;; Test with RemoveDIs debug-info mode to exercise a potential crash path.
; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal  -attributor-annotate-decl-cs  -S < %s --try-experimental-debuginfo-iterators | FileCheck %s --check-prefixes=CHECK,TUNIT
; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal  -attributor-annotate-decl-cs -S < %s --try-experimental-debuginfo-iterators | FileCheck %s --check-prefixes=CHECK,CGSCC

define void @f() {
; TUNIT-LABEL: define {{[^@]+}}@f() {
; TUNIT-NEXT:  entry:
; TUNIT-NEXT:    [[A:%.*]] = alloca i32, align 1
; TUNIT-NEXT:    [[TMP0:%.*]] = load i32, ptr [[A]], align 1
; TUNIT-NEXT:    call void @g(i32 [[TMP0]])
; TUNIT-NEXT:    ret void
;
; CGSCC-LABEL: define {{[^@]+}}@f() {
; CGSCC-NEXT:  entry:
; CGSCC-NEXT:    call void @g(i32 undef)
; CGSCC-NEXT:    ret void
;
entry:
  %a = alloca i32, align 1
  call void @g(ptr %a)
  ret void
}

define internal void @g(ptr %a) {
; CHECK: Function Attrs: memory(readwrite, argmem: none)
; CHECK-LABEL: define {{[^@]+}}@g
; CHECK-SAME: (i32 [[TMP0:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT:    [[A_PRIV:%.*]] = alloca i32, align 4
; CHECK-NEXT:    store i32 [[TMP0]], ptr [[A_PRIV]], align 4
; CHECK-NEXT:    [[AA:%.*]] = load i32, ptr [[A_PRIV]], align 1
; CHECK-NEXT:    call void @z(i32 [[AA]])
; CHECK-NEXT:    ret void
;
  %aa = load i32, ptr %a, align 1
  call void @z(i32 %aa)
  ret void
}

declare void @z(i32)

; Test2
; Different alignemnt privatizable arguments
define internal i32 @test(ptr %X, ptr %Y) {
; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read)
; CGSCC-LABEL: define {{[^@]+}}@test
; CGSCC-SAME: (ptr nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[X:%.*]], i64 [[TMP0:%.*]]) #[[ATTR1:[0-9]+]] {
; CGSCC-NEXT:    [[Y_PRIV:%.*]] = alloca i64, align 8
; CGSCC-NEXT:    store i64 [[TMP0]], ptr [[Y_PRIV]], align 4
; CGSCC-NEXT:    [[A:%.*]] = load i32, ptr [[X]], align 4
; CGSCC-NEXT:    [[B:%.*]] = load i64, ptr [[Y_PRIV]], align 8
; CGSCC-NEXT:    [[C:%.*]] = add i32 [[A]], 1
; CGSCC-NEXT:    [[D:%.*]] = add i64 [[B]], 1
; CGSCC-NEXT:    [[COND:%.*]] = icmp sgt i64 [[D]], -1
; CGSCC-NEXT:    br i1 [[COND]], label [[RETURN1:%.*]], label [[RETURN2:%.*]]
; CGSCC:       Return1:
; CGSCC-NEXT:    ret i32 [[C]]
; CGSCC:       Return2:
; CGSCC-NEXT:    ret i32 [[A]]
;
  %A = load i32, ptr %X
  %B = load i64, ptr %Y
  %C = add i32 %A, 1
  %D = add i64 %B, 1
  %cond = icmp sgt i64 %D, -1
  br i1 %cond, label %Return1, label %Return2
Return1:
  ret i32 %C
Return2:
  ret i32 %A
}

define internal i32 @caller(ptr %A) {
; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
; CGSCC-LABEL: define {{[^@]+}}@caller
; CGSCC-SAME: (i32 [[TMP0:%.*]]) #[[ATTR2:[0-9]+]] {
; CGSCC-NEXT:    [[A_PRIV:%.*]] = alloca i32, align 4
; CGSCC-NEXT:    store i32 [[TMP0]], ptr [[A_PRIV]], align 4
; CGSCC-NEXT:    [[C:%.*]] = call i32 @test(ptr noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[A_PRIV]], i64 noundef 1) #[[ATTR3:[0-9]+]]
; CGSCC-NEXT:    ret i32 [[C]]
;
  %B = alloca i64
  store i64 1, ptr %B
  %C = call i32 @test(ptr %A, ptr %B)
  ret i32 %C
}

define i32 @callercaller() {
; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
; TUNIT-LABEL: define {{[^@]+}}@callercaller
; TUNIT-SAME: () #[[ATTR1:[0-9]+]] {
; TUNIT-NEXT:    [[B:%.*]] = alloca i32, align 4
; TUNIT-NEXT:    ret i32 3
;
; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
; CGSCC-LABEL: define {{[^@]+}}@callercaller
; CGSCC-SAME: () #[[ATTR2]] {
; CGSCC-NEXT:    [[X:%.*]] = call i32 @caller(i32 noundef 2) #[[ATTR4:[0-9]+]]
; CGSCC-NEXT:    ret i32 [[X]]
;
  %B = alloca i32
  store i32 2, ptr %B
  %X = call i32 @caller(ptr %B)
  ret i32 %X
}
;.
; TUNIT: attributes #[[ATTR0]] = { memory(readwrite, argmem: none) }
; TUNIT: attributes #[[ATTR1]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) }
;.
; CGSCC: attributes #[[ATTR0]] = { memory(readwrite, argmem: none) }
; CGSCC: attributes #[[ATTR1]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) }
; CGSCC: attributes #[[ATTR2]] = { mustprogress nofree nosync nounwind willreturn memory(none) }
; CGSCC: attributes #[[ATTR3]] = { nofree willreturn memory(read) }
; CGSCC: attributes #[[ATTR4]] = { nofree nosync willreturn }
;.