138 lines
3.7 KiB
LLVM
138 lines
3.7 KiB
LLVM
; RUN: opt -p simplifycfg -S %s | FileCheck %s
|
|
|
|
declare void @init(ptr)
|
|
|
|
define i64 @hoist_load_with_matching_pointers_and_tbaa(i1 %c) {
|
|
; CHECK-LABEL: define i64 @hoist_load_with_matching_pointers_and_tbaa(
|
|
; CHECK-SAME: i1 [[C:%.*]]) {
|
|
; CHECK-NEXT: [[ENTRY:.*:]]
|
|
; CHECK-NEXT: [[TMP:%.*]] = alloca i64, align 8
|
|
; CHECK-NEXT: call void @init(ptr [[TMP]])
|
|
; CHECK-NEXT: [[TMP0:%.*]] = load i64, ptr [[TMP]], align 8
|
|
; CHECK-NOT: !tbaa
|
|
; CHECK-NEXT: [[TMP1:%.*]] = load i64, ptr [[TMP]], align 8
|
|
; CHECK-NOT: !tbaa
|
|
; CHECK-NEXT: [[P:%.*]] = select i1 [[C]], i64 [[TMP0]], i64 [[TMP1]]
|
|
; CHECK-NEXT: ret i64 [[P]]
|
|
;
|
|
entry:
|
|
%tmp = alloca i64, align 8
|
|
call void @init(ptr %tmp)
|
|
br i1 %c, label %then, label %else
|
|
|
|
then:
|
|
%0 = load i64, ptr %tmp, align 8, !tbaa !0
|
|
br label %exit
|
|
|
|
else:
|
|
%1 = load i64, ptr %tmp, align 8, !tbaa !0
|
|
br label %exit
|
|
|
|
exit:
|
|
%p = phi i64 [ %0, %then ], [ %1, %else ]
|
|
ret i64 %p
|
|
}
|
|
|
|
define i64 @hoist_load_with_matching_tbaa_different_pointers(i1 %c) {
|
|
; CHECK-LABEL: define i64 @hoist_load_with_matching_tbaa_different_pointers(
|
|
; CHECK-SAME: i1 [[C:%.*]]) {
|
|
; CHECK-NEXT: [[ENTRY:.*:]]
|
|
; CHECK-NEXT: [[TMP:%.*]] = alloca i64, align 8
|
|
; CHECK-NEXT: [[TMP_1:%.*]] = alloca i64, align 8
|
|
; CHECK-NEXT: call void @init(ptr [[TMP]])
|
|
; CHECK-NEXT: call void @init(ptr [[TMP_1]])
|
|
; CHECK-NEXT: [[TMP0:%.*]] = load i64, ptr [[TMP]], align 8
|
|
; CHECK-NOT: !tbaa
|
|
; CHECK-NEXT: [[TMP1:%.*]] = load i64, ptr [[TMP_1]], align 8
|
|
; CHECK-NOT: !tbaa
|
|
; CHECK-NEXT: [[P:%.*]] = select i1 [[C]], i64 [[TMP0]], i64 [[TMP1]]
|
|
; CHECK-NEXT: ret i64 [[P]]
|
|
;
|
|
entry:
|
|
%tmp = alloca i64, align 8
|
|
%tmp.1 = alloca i64, align 8
|
|
call void @init(ptr %tmp)
|
|
call void @init(ptr %tmp.1)
|
|
br i1 %c, label %then, label %else
|
|
|
|
then:
|
|
%0 = load i64, ptr %tmp, align 8, !tbaa !0
|
|
br label %exit
|
|
|
|
else:
|
|
%1 = load i64, ptr %tmp.1, align 8, !tbaa !0
|
|
br label %exit
|
|
|
|
exit:
|
|
%p = phi i64 [ %0, %then ], [ %1, %else ]
|
|
ret i64 %p
|
|
}
|
|
|
|
define i64 @hoist_load_with_different_tbaa(i1 %c) {
|
|
; CHECK-LABEL: define i64 @hoist_load_with_different_tbaa(
|
|
; CHECK-SAME: i1 [[C:%.*]]) {
|
|
; CHECK-NEXT: [[ENTRY:.*:]]
|
|
; CHECK-NEXT: [[TMP:%.*]] = alloca i64, align 8
|
|
; CHECK-NEXT: call void @init(ptr [[TMP]])
|
|
; CHECK-NEXT: [[TMP0:%.*]] = load i64, ptr [[TMP]], align 8
|
|
; CHECK-NOT: !tbaa
|
|
; CHECK-NEXT: [[TMP1:%.*]] = load i64, ptr [[TMP]], align 8
|
|
; CHECK-NOT: !tbaa
|
|
; CHECK-NEXT: [[P:%.*]] = select i1 [[C]], i64 [[TMP0]], i64 [[TMP1]]
|
|
; CHECK-NEXT: ret i64 [[P]]
|
|
;
|
|
entry:
|
|
%tmp = alloca i64, align 8
|
|
call void @init(ptr %tmp)
|
|
br i1 %c, label %then, label %else
|
|
|
|
then:
|
|
%0 = load i64, ptr %tmp, align 8, !tbaa !0
|
|
br label %exit
|
|
|
|
else:
|
|
%1 = load i64, ptr %tmp, align 8, !tbaa !5
|
|
br label %exit
|
|
|
|
exit:
|
|
%p = phi i64 [ %0, %then ], [ %1, %else ]
|
|
ret i64 %p
|
|
}
|
|
|
|
define i64 @hoist_different_ops(i1 %c, i64 %a) {
|
|
; CHECK-LABEL: define i64 @hoist_different_ops(
|
|
; CHECK-SAME: i1 [[C:%.*]], i64 [[A:%.*]]) {
|
|
; CHECK-NEXT: [[ENTRY:.*:]]
|
|
; CHECK-NEXT: [[TMP:%.*]] = alloca i64, align 8
|
|
; CHECK-NEXT: call void @init(ptr [[TMP]])
|
|
; CHECK-NEXT: [[TMP0:%.*]] = load i64, ptr [[TMP]], align 8
|
|
; CHECK-NOT: !tbaa
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[A]], 123
|
|
; CHECK-NEXT: [[P:%.*]] = select i1 [[C]], i64 [[TMP0]], i64 [[TMP1]]
|
|
; CHECK-NEXT: ret i64 [[P]]
|
|
;
|
|
entry:
|
|
%tmp = alloca i64, align 8
|
|
call void @init(ptr %tmp)
|
|
br i1 %c, label %then, label %else
|
|
|
|
then:
|
|
%0 = load i64, ptr %tmp, align 8, !tbaa !0
|
|
br label %exit
|
|
|
|
else:
|
|
%1 = add i64 %a, 123
|
|
br label %exit
|
|
|
|
exit:
|
|
%p = phi i64 [ %0, %then ], [ %1, %else ]
|
|
ret i64 %p
|
|
}
|
|
|
|
!0 = !{!1, !1, i64 0}
|
|
!1 = !{!"p2 long long", !2, i64 0}
|
|
!2 = !{!"any pointer", !3, i64 0}
|
|
!3 = !{!"omnipotent char", !4, i64 0}
|
|
!4 = !{!"Simple C++ TBAA"}
|
|
!5 = !{!3, !3, i64 0}
|