1 files changed, 400 insertions, 0 deletions
diff --git a/llvm/test/Transforms/Attributor/align.ll b/llvm/test/Transforms/Attributor/align.ll
new file mode 100644
index 00000000000..a5bf91915ba
--- /dev/null
+++ b/llvm/test/Transforms/Attributor/align.ll
@@ -0,0 +1,400 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -attributor -attributor-manifest-internal -attributor-disable=false -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=5 -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* nofree readnone returned align 8 "no-capture-maybe-returned" %0)
+define i32* @test1(i32* align 8 %0) #0 {
+  ret i32* %0
+}
+
+; TEST 2
+; ATTRIBUTOR: define i32* @test2(i32* nofree readnone returned "no-capture-maybe-returned" %0)
+define i32* @test2(i32* %0) #0 {
+  ret i32* %0
+}
+
+; TEST 3
+; ATTRIBUTOR: define align 4 i32* @test3(i32* nofree readnone align 8 "no-capture-maybe-returned" %0, i32* nofree readnone align 4 "no-capture-maybe-returned" %1, i1 %2)
+define i32* @test3(i32* align 8 %0, i32* align 4 %1, i1 %2) #0 {
+  %ret = select i1 %2, i32* %0, i32* %1
+  ret i32* %ret
+}
+
+; TEST 4
+; ATTRIBUTOR: define align 32 i32* @test4(i32* nofree readnone align 32 "no-capture-maybe-returned" %0, i32* nofree readnone align 32 "no-capture-maybe-returned" %1, i1 %2)
+define i32* @test4(i32* align 32 %0, i32* align 32 %1, i1 %2) #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 %0) local_unnamed_addr #0 {
+  %2 = icmp eq i8* %0, null
+  br i1 %2, label %3, label %5
+
+; <label>:3:                                      ; preds = %1
+  %4 = tail call i8* @f2(i8* nonnull @a1)
+  %l = load i8, i8* %4
+  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 %0) local_unnamed_addr #0 {
+  %2 = icmp eq i8* %0, null
+  br i1 %2, label %5, label %3
+
+; <label>:3:                                      ; preds = %1
+
+  %4 = tail call i8* @f1(i8* nonnull %0)
+  br label %7
+
+; <label>:5:                                      ; preds = %1
+  %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 %0) local_unnamed_addr #0 {
+  %2 = icmp eq i8* %0, null
+  br i1 %2, label %3, label %5
+
+; <label>:3:                                      ; preds = %1
+  %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
+define align 4 i32* @test7(i32* align 32 %p) #0 {
+; ATTRIBUTOR-LABEL: define {{[^@]+}}@test7
+; ATTRIBUTOR-SAME: (i32* nofree readnone returned align 32 "no-capture-maybe-returned" [[P:%.*]])
+; ATTRIBUTOR-NEXT:    ret i32* [[P:%.*]]
+;
+  tail call i8* @f1(i8* align 8 dereferenceable(1) @a1)
+  ret i32* %p
+}
+
+; TEST 7b
+; Function Attrs: nounwind readnone ssp uwtable
+define internal i8* @f1b(i8* readnone %0) local_unnamed_addr #0 {
+;
+; ATTRIBUTOR-LABEL: define {{[^@]+}}@f1b
+; ATTRIBUTOR-SAME: (i8* nofree nonnull readnone align 8 dereferenceable(1) "no-capture-maybe-returned" [[TMP0:%.*]]) local_unnamed_addr
+; ATTRIBUTOR-NEXT:    [[TMP2:%.*]] = icmp eq i8* [[TMP0:%.*]], null
+; ATTRIBUTOR-NEXT:    br i1 [[TMP2]], label [[TMP3:%.*]], label [[TMP5:%.*]]
+; ATTRIBUTOR:       3:
+; ATTRIBUTOR-NEXT:    [[TMP4:%.*]] = tail call align 8 i8* @f2b(i8* nofree nonnull align 8 dereferenceable(1) @a1)
+; ATTRIBUTOR-NEXT:    [[L:%.*]] = load i8, i8* [[TMP4]], align 8
+; ATTRIBUTOR-NEXT:    store i8 [[L]], i8* @a1, align 8
+; ATTRIBUTOR-NEXT:    br label [[TMP5]]
+; ATTRIBUTOR:       5:
+; ATTRIBUTOR-NEXT:    [[TMP6:%.*]] = phi i8* [ [[TMP4]], [[TMP3]] ], [ [[TMP0]], [[TMP1:%.*]] ]
+; ATTRIBUTOR-NEXT:    ret i8* [[TMP6]]
+;
+  %2 = icmp eq i8* %0, null
+  br i1 %2, label %3, label %5
+
+; <label>:3:                                      ; preds = %1
+  %4 = tail call i8* @f2b(i8* nonnull @a1)
+  %l = load i8, i8* %4
+  store i8 %l, i8* @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* @f2b(i8* readnone %0) local_unnamed_addr #0 {
+;
+; ATTRIBUTOR-LABEL: define {{[^@]+}}@f2b
+; ATTRIBUTOR-SAME: (i8* nofree nonnull readnone align 8 dereferenceable(1) "no-capture-maybe-returned" [[TMP0:%.*]]) local_unnamed_addr
+; ATTRIBUTOR-NEXT:    [[TMP2:%.*]] = icmp eq i8* @a1, null
+; ATTRIBUTOR-NEXT:    br i1 [[TMP2]], label [[TMP5:%.*]], label [[TMP3:%.*]]
+; ATTRIBUTOR:       3:
+; ATTRIBUTOR-NEXT:    [[TMP4:%.*]] = tail call i8* @f1b(i8* nofree nonnull align 8 dereferenceable(1) "no-capture-maybe-returned" @a1)
+; ATTRIBUTOR-NEXT:    br label [[TMP7:%.*]]
+; ATTRIBUTOR:       5:
+; ATTRIBUTOR-NEXT:    [[TMP6:%.*]] = tail call i8* @f3b(i8* nofree nonnull align 16 dereferenceable(1) @a2)
+; ATTRIBUTOR-NEXT:    br label [[TMP7]]
+; ATTRIBUTOR:       7:
+; ATTRIBUTOR-NEXT:    [[TMP8:%.*]] = phi i8* [ [[TMP4]], [[TMP3]] ], [ [[TMP6]], [[TMP5]] ]
+; ATTRIBUTOR-NEXT:    ret i8* [[TMP8]]
+;
+  %2 = icmp eq i8* %0, null
+  br i1 %2, label %5, label %3
+
+; <label>:3:                                      ; preds = %1
+
+  %4 = tail call i8* @f1b(i8* nonnull %0)
+  br label %7
+
+; <label>:5:                                      ; preds = %1
+  %6 = tail call i8* @f3b(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* @f3b(i8* readnone %0) local_unnamed_addr #0 {
+;
+; ATTRIBUTOR-LABEL: define {{[^@]+}}@f3b
+; ATTRIBUTOR-SAME: (i8* nocapture nofree nonnull readnone align 16 dereferenceable(1) [[TMP0:%.*]]) local_unnamed_addr
+; ATTRIBUTOR-NEXT:    [[TMP2:%.*]] = icmp eq i8* @a2, null
+; ATTRIBUTOR-NEXT:    br i1 [[TMP2]], label [[TMP3:%.*]], label [[TMP5:%.*]]
+; ATTRIBUTOR:       3:
+; ATTRIBUTOR-NEXT:    [[TMP4:%.*]] = tail call i8* @f1b(i8* nofree nonnull align 16 dereferenceable(1) @a2)
+; ATTRIBUTOR-NEXT:    br label [[TMP5]]
+; ATTRIBUTOR:       5:
+; ATTRIBUTOR-NEXT:    [[TMP6:%.*]] = phi i8* [ [[TMP4]], [[TMP3]] ], [ @a1, [[TMP1:%.*]] ]
+; ATTRIBUTOR-NEXT:    ret i8* [[TMP6]]
+;
+  %2 = icmp eq i8* %0, null
+  br i1 %2, label %3, label %5
+
+; <label>:3:                                      ; preds = %1
+  %4 = tail call i8* @f1b(i8* nonnull @a2)
+  br label %5
+
+; <label>:5:                                      ; preds = %1, %3
+  %6 = phi i8* [ %4, %3 ], [ @a1, %1 ]
+  ret i8* %6
+}
+
+define align 4 i32* @test7b(i32* align 32 %p) #0 {
+; ATTRIBUTOR-LABEL: define {{[^@]+}}@test7b
+; ATTRIBUTOR-SAME: (i32* nofree readnone returned align 32 "no-capture-maybe-returned" [[P:%.*]])
+; ATTRIBUTOR-NEXT:    [[TMP1:%.*]] = tail call i8* @f1b(i8* nofree nonnull align 8 dereferenceable(1) @a1)
+; ATTRIBUTOR-NEXT:    ret i32* [[P:%.*]]
+;
+  tail call i8* @f1b(i8* align 8 dereferenceable(1) @a1)
+  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
+}
+
+declare void @user_i32_ptr(i32*) readnone nounwind
+define internal void @test8(i32* %a, i32* %b, i32* %c) {
+; ATTRIBUTOR: define internal void @test8(i32* nocapture readnone align 4 %a, i32* nocapture readnone align 4 %b, i32* nocapture readnone %c)
+  call void @user_i32_ptr(i32* %a)
+  call void @user_i32_ptr(i32* %b)
+  call void @user_i32_ptr(i32* %c)
+  ret void
+}
+
+declare void @test9_helper(i32* %A)
+define void @test9_traversal(i1 %c, i32* align 4 %B, i32* align 8 %C) {
+  %sel = select i1 %c, i32* %B, i32* %C
+  call void @test9_helper(i32* %sel)
+  ret void
+}
+
+; FIXME: This will work with an upcoming patch (D66618 or similar)
+;             define align 32 i32* @test10a(i32* align 32 "no-capture-maybe-returned" %p)
+; ATTRIBUTOR: define i32* @test10a(i32* nofree nonnull align 32 dereferenceable(4) "no-capture-maybe-returned" %p)
+define i32* @test10a(i32* align 32 %p) {
+; ATTRIBUTOR: %l = load i32, i32* %p, align 32
+  %l = load i32, i32* %p
+  %c = icmp eq i32 %l, 0
+  br i1 %c, label %t, label %f
+t:
+  %r = call i32* @test10a(i32* %p)
+; FIXME: This will work with an upcoming patch (D66618 or similar)
+;             store i32 1, i32* %r, align 32
+; ATTRIBUTOR: store i32 1, i32* %r
+  store i32 1, i32* %r
+  %g0 = getelementptr i32, i32* %p, i32 8
+  br label %e
+f:
+  %g1 = getelementptr i32, i32* %p, i32 8
+; FIXME: This will work with an upcoming patch (D66618 or similar)
+;             store i32 -1, i32* %g1, align 32
+; ATTRIBUTOR: store i32 -1, i32* %g1
+  store i32 -1, i32* %g1
+  br label %e
+e:
+  %phi = phi i32* [%g0, %t], [%g1, %f]
+  ret i32* %phi
+}
+
+; FIXME: This will work with an upcoming patch (D66618 or similar)
+;             define align 32 i32* @test10b(i32* align 32 "no-capture-maybe-returned" %p)
+; ATTRIBUTOR: define i32* @test10b(i32* nofree nonnull align 32 dereferenceable(4) "no-capture-maybe-returned" %p)
+define i32* @test10b(i32* align 32 %p) {
+; ATTRIBUTOR: %l = load i32, i32* %p, align 32
+  %l = load i32, i32* %p
+  %c = icmp eq i32 %l, 0
+  br i1 %c, label %t, label %f
+t:
+  %r = call i32* @test10b(i32* %p)
+; FIXME: This will work with an upcoming patch (D66618 or similar)
+;             store i32 1, i32* %r, align 32
+; ATTRIBUTOR: store i32 1, i32* %r
+  store i32 1, i32* %r
+  %g0 = getelementptr i32, i32* %p, i32 8
+  br label %e
+f:
+  %g1 = getelementptr i32, i32* %p, i32 -8
+; FIXME: This will work with an upcoming patch (D66618 or similar)
+;             store i32 -1, i32* %g1, align 32
+; ATTRIBUTOR: store i32 -1, i32* %g1
+  store i32 -1, i32* %g1
+  br label %e
+e:
+  %phi = phi i32* [%g0, %t], [%g1, %f]
+  ret i32* %phi
+}
+
+
+; ATTRIBUTOR: define i64 @test11(i32* nocapture nofree nonnull readonly align 8 dereferenceable(8) %p)
+define i64 @test11(i32* %p) {
+  %p-cast = bitcast i32* %p to i64*
+  %ret = load i64, i64* %p-cast, align 8
+  ret i64 %ret
+}
+
+; TEST 12
+; Test for deduction using must-be-executed-context and GEP instruction 
+
+; FXIME: %p should have nonnull
+; ATTRIBUTOR: define i64 @test12-1(i32* nocapture nofree readonly align 16 %p)
+define i64 @test12-1(i32* align 4 %p) {
+  %p-cast = bitcast i32* %p to i64*
+  %arrayidx0 = getelementptr i64, i64* %p-cast, i64 1
+  %arrayidx1 = getelementptr i64, i64* %arrayidx0, i64 3
+  %ret = load i64, i64* %arrayidx1, align 16
+  ret i64 %ret
+}
+
+; ATTRIBUTOR: define i64 @test12-2(i32* nocapture nofree nonnull readonly align 16 dereferenceable(8) %p)
+define i64 @test12-2(i32* align 4 %p) {
+  %p-cast = bitcast i32* %p to i64*
+  %arrayidx0 = getelementptr i64, i64* %p-cast, i64 0
+  %ret = load i64, i64* %arrayidx0, align 16
+  ret i64 %ret
+}
+
+; FXIME: %p should have nonnull
+; ATTRIBUTOR: define void @test12-3(i32* nocapture nofree writeonly align 16 %p)
+define void @test12-3(i32* align 4 %p) {
+  %p-cast = bitcast i32* %p to i64*
+  %arrayidx0 = getelementptr i64, i64* %p-cast, i64 1
+  %arrayidx1 = getelementptr i64, i64* %arrayidx0, i64 3
+  store i64 0, i64* %arrayidx1, align 16
+  ret void 
+}
+
+; ATTRIBUTOR: define void @test12-4(i32* nocapture nofree nonnull writeonly align 16 dereferenceable(8) %p)
+define void @test12-4(i32* align 4 %p) {
+  %p-cast = bitcast i32* %p to i64*
+  %arrayidx0 = getelementptr i64, i64* %p-cast, i64 0
+  store i64 0, i64* %arrayidx0, align 16
+  ret void 
+}
+
+declare void @use(i64*) willreturn nounwind
+
+; ATTRIBUTOR: define void @test12-5(i32* align 16 %p)
+define void @test12-5(i32* align 4 %p) {
+  %p-cast = bitcast i32* %p to i64*
+  %arrayidx0 = getelementptr i64, i64* %p-cast, i64 1
+  %arrayidx1 = getelementptr i64, i64* %arrayidx0, i64 3
+  tail call void @use(i64* align 16 %arrayidx1)
+  ret void 
+}
+
+; ATTRIBUTOR: define void @test12-6(i32* align 16 %p)
+define void @test12-6(i32* align 4 %p) {
+  %p-cast = bitcast i32* %p to i64*
+  %arrayidx0 = getelementptr i64, i64* %p-cast, i64 0
+  tail call void @use(i64* align 16 %arrayidx0)
+  ret void 
+}
+
+attributes #0 = { nounwind uwtable noinline }
+attributes #1 = { uwtable noinline }