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; RUN: opt -attributor -attributor-disable=false -S < %s | FileCheck %s --check-prefix=ATTRIBUTOR
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
; Test cases specifically designed for "align" attribute.
; We use FIXME's to indicate problems and missing attributes.
; TEST 1
; ATTRIBUTOR: define align 8 i32* @test1(i32* returned align 8)
define i32* @test1(i32* align 8) #0 {
ret i32* %0
}
; TEST 2
; ATTRIBUTOR: define i32* @test2(i32* returned)
define i32* @test2(i32*) #0 {
ret i32* %0
}
; TEST 3
; ATTRIBUTOR: define align 4 i32* @test3(i32* align 8, i32* align 4, i1)
define i32* @test3(i32* align 8, i32* align 4, i1) #0 {
%ret = select i1 %2, i32* %0, i32* %1
ret i32* %ret
}
; TEST 4
; ATTRIBUTOR: define align 32 i32* @test4(i32* align 32, i32* align 32, i1)
define i32* @test4(i32* align 32, i32* align 32, i1) #0 {
%ret = select i1 %2, i32* %0, i32* %1
ret i32* %ret
}
; TEST 5
declare i32* @unknown()
declare align 8 i32* @align8()
; ATTRIBUTOR: define align 8 i32* @test5_1()
define i32* @test5_1() {
%ret = tail call align 8 i32* @unknown()
ret i32* %ret
}
; ATTRIBUTOR: define align 8 i32* @test5_2()
define i32* @test5_2() {
%ret = tail call i32* @align8()
ret i32* %ret
}
; TEST 6
; SCC
; ATTRIBUTOR: define noalias nonnull align 536870912 dereferenceable(4294967295) i32* @test6_1()
define i32* @test6_1() #0 {
%ret = tail call i32* @test6_2()
ret i32* %ret
}
; ATTRIBUTOR: define noalias nonnull align 536870912 dereferenceable(4294967295) i32* @test6_2()
define i32* @test6_2() #0 {
%ret = tail call i32* @test6_1()
ret i32* %ret
}
; char a1 __attribute__((aligned(8)));
; char a2 __attribute__((aligned(16)));
;
; char* f1(char* a ){
; return a?a:f2(&a1);
; }
; char* f2(char* a){
; return a?f1(a):f3(&a2);
; }
;
; char* f3(char* a){
; return a?&a1: f1(&a2);
; }
@a1 = common global i8 0, align 8
@a2 = common global i8 0, align 16
; Function Attrs: nounwind readnone ssp uwtable
define internal i8* @f1(i8* readnone) local_unnamed_addr #0 {
; ATTRIBUTOR: define internal nonnull align 8 i8* @f1(i8* nonnull readnone align 8)
%2 = icmp eq i8* %0, null
br i1 %2, label %3, label %5
; <label>:3: ; preds = %1
; ATTRIBUTOR: %4 = tail call i8* @f2(i8* nonnull align 8 @a1)
%4 = tail call i8* @f2(i8* nonnull @a1)
br label %5
; <label>:5: ; preds = %1, %3
%6 = phi i8* [ %4, %3 ], [ %0, %1 ]
ret i8* %6
}
; Function Attrs: nounwind readnone ssp uwtable
define internal i8* @f2(i8* readnone) local_unnamed_addr #0 {
; ATTRIBUTOR: define internal nonnull align 8 i8* @f2(i8* nonnull readnone align 8)
%2 = icmp eq i8* %0, null
br i1 %2, label %5, label %3
; <label>:3: ; preds = %1
; ATTRIBUTOR: %4 = tail call i8* @f1(i8* nonnull align 8 %0)
%4 = tail call i8* @f1(i8* nonnull %0)
br label %7
; <label>:5: ; preds = %1
; ATTRIBUTOR: %6 = tail call i8* @f3(i8* nonnull align 16 @a2)
%6 = tail call i8* @f3(i8* nonnull @a2)
br label %7
; <label>:7: ; preds = %5, %3
%8 = phi i8* [ %4, %3 ], [ %6, %5 ]
ret i8* %8
}
; Function Attrs: nounwind readnone ssp uwtable
define internal i8* @f3(i8* readnone) local_unnamed_addr #0 {
; ATTRIBUTOR: define internal nonnull align 8 i8* @f3(i8* nonnull readnone align 16)
%2 = icmp eq i8* %0, null
br i1 %2, label %3, label %5
; <label>:3: ; preds = %1
; ATTRIBUTOR: %4 = tail call i8* @f1(i8* nonnull align 16 @a2)
%4 = tail call i8* @f1(i8* nonnull @a2)
br label %5
; <label>:5: ; preds = %1, %3
%6 = phi i8* [ %4, %3 ], [ @a1, %1 ]
ret i8* %6
}
; TEST 7
; Better than IR information
; ATTRIBUTOR: define align 32 i32* @test7(i32* returned align 32 %p)
define align 4 i32* @test7(i32* align 32 %p) #0 {
ret i32* %p
}
; TEST 8
define void @test8_helper() {
%ptr0 = tail call i32* @unknown()
%ptr1 = tail call align 4 i32* @unknown()
%ptr2 = tail call align 8 i32* @unknown()
tail call void @test8(i32* %ptr1, i32* %ptr1, i32* %ptr0)
; ATTRIBUTOR: tail call void @test8(i32* align 4 %ptr1, i32* align 4 %ptr1, i32* %ptr0)
tail call void @test8(i32* %ptr2, i32* %ptr1, i32* %ptr1)
; ATTRIBUTOR: tail call void @test8(i32* align 8 %ptr2, i32* align 4 %ptr1, i32* align 4 %ptr1)
tail call void @test8(i32* %ptr2, i32* %ptr1, i32* %ptr1)
; ATTRIBUTOR: tail call void @test8(i32* align 8 %ptr2, i32* align 4 %ptr1, i32* align 4 %ptr1)
ret void
}
define internal void @test8(i32* %a, i32* %b, i32* %c) {
; ATTRIBUTOR: define internal void @test8(i32* align 4 %a, i32* align 4 %b, i32* %c)
ret void
}
attributes #0 = { nounwind uwtable noinline }
attributes #1 = { uwtable noinline }
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