mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-22 18:54:02 +01:00
59f9149f4e
The MemorySSA-based implementation has been enabled without issue for a while now, so keeping the old implementation around doesn't seem useful anymore. This drops the MemDep-based implementation. Differential Revision: https://reviews.llvm.org/D97877
172 lines
4.5 KiB
LLVM
172 lines
4.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt < %s -basic-aa -dse -S | FileCheck %s
|
|
|
|
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
|
|
|
|
declare void @readnone_may_throw() readnone
|
|
|
|
declare void @use(i32 *)
|
|
|
|
; Tests where the pointer/object is accessible after the function returns.
|
|
|
|
; Cannot remove the store from the entry block, because the call in bb2 may throw.
|
|
define void @accessible_after_return_1(i32* noalias %P, i1 %c1) {
|
|
; CHECK-LABEL: @accessible_after_return_1(
|
|
; CHECK-NEXT: store i32 1, i32* [[P:%.*]], align 4
|
|
; CHECK-NEXT: br i1 [[C1:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
|
|
; CHECK: bb1:
|
|
; CHECK-NEXT: store i32 0, i32* [[P]], align 4
|
|
; CHECK-NEXT: br label [[BB5:%.*]]
|
|
; CHECK: bb2:
|
|
; CHECK-NEXT: call void @readnone_may_throw()
|
|
; CHECK-NEXT: store i32 3, i32* [[P]], align 4
|
|
; CHECK-NEXT: br label [[BB5]]
|
|
; CHECK: bb5:
|
|
; CHECK-NEXT: call void @use(i32* [[P]])
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
store i32 1, i32* %P
|
|
br i1 %c1, label %bb1, label %bb2
|
|
|
|
bb1:
|
|
store i32 0, i32* %P
|
|
br label %bb5
|
|
|
|
bb2:
|
|
call void @readnone_may_throw()
|
|
store i32 3, i32* %P
|
|
br label %bb5
|
|
|
|
bb5:
|
|
call void @use(i32* %P)
|
|
ret void
|
|
}
|
|
|
|
; Cannot remove the store from the entry block, because the call in bb3 may throw.
|
|
define void @accessible_after_return6(i32* %P, i1 %c.1, i1 %c.2) {
|
|
; CHECK-LABEL: @accessible_after_return6(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: store i32 0, i32* [[P:%.*]], align 4
|
|
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
|
|
; CHECK: bb1:
|
|
; CHECK-NEXT: br i1 [[C_2:%.*]], label [[BB3:%.*]], label [[BB4:%.*]]
|
|
; CHECK: bb2:
|
|
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
|
|
; CHECK-NEXT: ret void
|
|
; CHECK: bb3:
|
|
; CHECK-NEXT: call void @readnone_may_throw()
|
|
; CHECK-NEXT: store i32 2, i32* [[P]], align 4
|
|
; CHECK-NEXT: ret void
|
|
; CHECK: bb4:
|
|
; CHECK-NEXT: store i32 3, i32* [[P]], align 4
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
store i32 0, i32* %P
|
|
br i1 %c.1, label %bb1, label %bb2
|
|
|
|
bb1:
|
|
br i1 %c.2, label %bb3, label %bb4
|
|
|
|
bb2:
|
|
store i32 1, i32* %P
|
|
ret void
|
|
|
|
bb3:
|
|
call void @readnone_may_throw()
|
|
store i32 2, i32* %P
|
|
ret void
|
|
|
|
bb4:
|
|
store i32 3, i32* %P
|
|
ret void
|
|
}
|
|
|
|
; Tests where the pointer/object is *NOT* accessible after the function returns.
|
|
|
|
; The store in the entry block can be eliminated, because it is overwritten
|
|
; on all paths to the exit. As the location is not visible to the caller, the
|
|
; call in bb2 (which may throw) can be ignored.
|
|
define void @alloca_1(i1 %c1) {
|
|
; CHECK-LABEL: @alloca_1(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[P:%.*]] = alloca i32
|
|
; CHECK-NEXT: br i1 [[C1:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
|
|
; CHECK: bb1:
|
|
; CHECK-NEXT: store i32 0, i32* [[P]], align 4
|
|
; CHECK-NEXT: br label [[BB5:%.*]]
|
|
; CHECK: bb2:
|
|
; CHECK-NEXT: call void @readnone_may_throw()
|
|
; CHECK-NEXT: store i32 3, i32* [[P]], align 4
|
|
; CHECK-NEXT: br label [[BB5]]
|
|
; CHECK: bb5:
|
|
; CHECK-NEXT: call void @use(i32* [[P]])
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%P = alloca i32
|
|
store i32 1, i32* %P
|
|
br i1 %c1, label %bb1, label %bb2
|
|
|
|
bb1:
|
|
store i32 0, i32* %P
|
|
br label %bb5
|
|
|
|
bb2:
|
|
call void @readnone_may_throw()
|
|
store i32 3, i32* %P
|
|
br label %bb5
|
|
|
|
bb5:
|
|
call void @use(i32* %P)
|
|
ret void
|
|
}
|
|
|
|
; The store in the entry block can be eliminated, because it is overwritten
|
|
; on all paths to the exit. As the location is not visible to the caller, the
|
|
; call in bb3 (which may throw) can be ignored.
|
|
define void @alloca_2(i1 %c.1, i1 %c.2) {
|
|
; CHECK-LABEL: @alloca_2(
|
|
; CHECK-NEXT: [[P:%.*]] = alloca i32
|
|
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
|
|
; CHECK: bb1:
|
|
; CHECK-NEXT: store i32 0, i32* [[P]], align 4
|
|
; CHECK-NEXT: br label [[BB5:%.*]]
|
|
; CHECK: bb2:
|
|
; CHECK-NEXT: br i1 [[C_2:%.*]], label [[BB3:%.*]], label [[BB4:%.*]]
|
|
; CHECK: bb3:
|
|
; CHECK-NEXT: call void @readnone_may_throw()
|
|
; CHECK-NEXT: store i32 3, i32* [[P]], align 4
|
|
; CHECK-NEXT: br label [[BB5]]
|
|
; CHECK: bb4:
|
|
; CHECK-NEXT: store i32 5, i32* [[P]], align 4
|
|
; CHECK-NEXT: br label [[BB5]]
|
|
; CHECK: bb5:
|
|
; CHECK-NEXT: call void @use(i32* [[P]])
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
%P = alloca i32
|
|
store i32 1, i32* %P
|
|
br i1 %c.1, label %bb1, label %bb2
|
|
|
|
bb1:
|
|
store i32 0, i32* %P
|
|
br label %bb5
|
|
|
|
bb2:
|
|
br i1 %c.2, label %bb3, label %bb4
|
|
|
|
bb3:
|
|
call void @readnone_may_throw()
|
|
store i32 3, i32* %P
|
|
br label %bb5
|
|
|
|
bb4:
|
|
store i32 5, i32* %P
|
|
br label %bb5
|
|
|
|
bb5:
|
|
call void @use(i32* %P)
|
|
ret void
|
|
}
|