; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=newgvn -S | FileCheck %s
;; Now that we do store refinement, we have to verify that we add fake uses
;; when we skip existing stores.
;; We also are testing that various variations that cause stores to move classes
;; have the right class movement happen
;; All of these tests result in verification failures if it does not.
source_filename = "bugpoint-output-daef094.bc"
target triple = "x86_64-apple-darwin16.5.0"
%struct.eggs = type {}
define void @spam(i32 *%a) {
; CHECK-LABEL: @spam(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[FOO:%.*]] = bitcast i32* [[A:%.*]] to %struct.eggs**
; CHECK-NEXT: store %struct.eggs* null, %struct.eggs** [[FOO]]
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br i1 undef, label [[BB3:%.*]], label [[BB2:%.*]]
; CHECK: bb2:
; CHECK-NEXT: call void @baz()
; CHECK-NEXT: br label [[BB1]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* undef
; CHECK-NEXT: store %struct.eggs* null, %struct.eggs** [[FOO]]
; CHECK-NEXT: unreachable
;
bb:
%foo = bitcast i32 *%a to %struct.eggs**
store %struct.eggs* null, %struct.eggs** %foo
br label %bb1
bb1: ; preds = %bb2, %bb
br i1 undef, label %bb3, label %bb2
bb2: ; preds = %bb1
call void @baz()
br label %bb1
bb3: ; preds = %bb1
store i32 0, i32* undef
;; This store is defined by a memoryphi of the call and the first store
;; At first, we will prove it equivalent to the first store above.
;; Then the call will become reachable, and the equivalence will be removed
;; Without it being a use of the first store, we will not update the store
;; to reflect this.
store %struct.eggs* null, %struct.eggs** %foo
unreachable
}
declare void @baz()
define void @a() {
; CHECK-LABEL: @a(
; CHECK-NEXT: b:
; CHECK-NEXT: br label [[C:%.*]]
; CHECK: c:
; CHECK-NEXT: store i64 undef, i64* null
; CHECK-NEXT: br label [[E:%.*]]
; CHECK: e:
; CHECK-NEXT: [[G:%.*]] = load i64*, i64** null
; CHECK-NEXT: store i64* undef, i64** null
; CHECK-NEXT: br i1 undef, label [[C]], label [[E]]
;
b:
br label %c
c: ; preds = %e, %b
%d = phi i64* [ undef, %b ], [ null, %e ]
store i64 undef, i64* %d
br label %e
e: ; preds = %e, %c
;; The memory for this load starts out equivalent to just the store in c, we later discover the store after us, and
;; need to make sure the right set of values get marked as changed after memory leaders change
%g = load i64*, i64** null
%0 = bitcast i64* %g to i64*
store i64* undef, i64** null
br i1 undef, label %c, label %e
}
%struct.hoge = type {}
define void @widget(%struct.hoge* %arg) {
; CHECK-LABEL: @widget(
; CHECK-NEXT: bb:
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[TMP:%.*]] = phi %struct.hoge* [ [[ARG:%.*]], [[BB:%.*]] ], [ null, [[BB1]] ]
; CHECK-NEXT: store %struct.hoge* [[TMP]], %struct.hoge** undef
; CHECK-NEXT: br i1 undef, label [[BB1]], label [[BB2:%.*]]
; CHECK: bb2:
; CHECK-NEXT: [[TMP3:%.*]] = phi i64 [ [[TMP8:%.*]], [[BB7:%.*]] ], [ 0, [[BB1]] ]
; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i64 [[TMP3]], 0
; CHECK-NEXT: br i1 [[TMP4]], label [[BB7]], label [[BB5:%.*]]
; CHECK: bb5:
; CHECK-NEXT: [[TMP6:%.*]] = load i64, i64* null
; CHECK-NEXT: call void @quux()
; CHECK-NEXT: store i64 [[TMP6]], i64* undef
; CHECK-NEXT: br label [[BB7]]
; CHECK: bb7:
; CHECK-NEXT: [[TMP8]] = add i64 [[TMP3]], 1
; CHECK-NEXT: br label [[BB2]]
;
bb:
br label %bb1
bb1: ; preds = %bb1, %bb
%tmp = phi %struct.hoge* [ %arg, %bb ], [ null, %bb1 ]
store %struct.hoge* %tmp, %struct.hoge** undef
br i1 undef, label %bb1, label %bb2
bb2: ; preds = %bb7, %bb1
%tmp3 = phi i64 [ %tmp8, %bb7 ], [ 0, %bb1 ]
%tmp4 = icmp eq i64 %tmp3, 0
br i1 %tmp4, label %bb7, label %bb5
bb5: ; preds = %bb2
;; Originally thought equal to the store that comes after it until the phi edges
;; are completely traversed
%tmp6 = load i64, i64* null
call void @quux()
store i64 %tmp6, i64* undef
br label %bb7
bb7: ; preds = %bb5, %bb2
%tmp8 = add i64 %tmp3, 1
br label %bb2
}
declare void @quux()
%struct.a = type {}
define void @b() {
; CHECK-LABEL: @b(
; CHECK-NEXT: [[C:%.*]] = alloca [[STRUCT_A:%.*]]
; CHECK-NEXT: br label [[D:%.*]]
; CHECK: m:
; CHECK-NEXT: unreachable
; CHECK: d:
; CHECK-NEXT: [[G:%.*]] = bitcast %struct.a* [[C]] to i8*
; CHECK-NEXT: [[F:%.*]] = bitcast i8* [[G]] to i32*
; CHECK-NEXT: [[E:%.*]] = load i32, i32* [[F]]
; CHECK-NEXT: br i1 undef, label [[I:%.*]], label [[J:%.*]]
; CHECK: i:
; CHECK-NEXT: br i1 undef, label [[K:%.*]], label [[M:%.*]]
; CHECK: k:
; CHECK-NEXT: br label [[L:%.*]]
; CHECK: l:
; CHECK-NEXT: unreachable
; CHECK: j:
; CHECK-NEXT: br label [[M]]
;
%c = alloca %struct.a
br label %d
m: ; preds = %j, %i
store i32 %e, i32* %f
unreachable
d: ; preds = %0
%g = bitcast %struct.a* %c to i8*
%h = getelementptr i8, i8* %g
%f = bitcast i8* %h to i32*
%e = load i32, i32* %f
br i1 undef, label %i, label %j
i: ; preds = %d
br i1 undef, label %k, label %m
k: ; preds = %i
br label %l
l: ; preds = %k
%n = phi i32 [ %e, %k ]
;; Becomes equal and then not equal to the other store, and
;; along the way, the load.
store i32 %n, i32* %f
unreachable
j: ; preds = %d
br label %m
}