| ; RUN: opt -basic-aa -print-alias-sets -alias-set-saturation-threshold=2 -S -o - < %s 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=NOSAT |
| ; RUN: opt -basic-aa -print-alias-sets -alias-set-saturation-threshold=1 -S -o - < %s 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=SAT |
| |
| ; CHECK-LABEL: 'allmust' |
| ; CHECK: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %a, LocationSize::precise(4)) |
| ; CHECK: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %b, LocationSize::precise(4)) |
| ; CHECK: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %c, LocationSize::precise(4)) |
| ; CHECK: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %d, LocationSize::precise(4)) |
| define void @allmust() { |
| %a = alloca i32 |
| %b = alloca i32 |
| %c = alloca i32 |
| %d = alloca i32 |
| store i32 1, i32* %a |
| store i32 2, i32* %b |
| store i32 3, i32* %c |
| store i32 4, i32* %d |
| ret void |
| } |
| |
| ; CHECK-LABEL: 'mergemay' |
| ; NOSAT: AliasSet[{{.*}}, 2] may alias, Mod Pointers: (i32* %a, LocationSize::precise(4)), (i32* %a1, LocationSize::precise(4)) |
| ; NOSAT: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %b, LocationSize::precise(4)) |
| ; SAT: AliasSet[{{.*}}, 2] may alias, Mod forwarding to 0x[[FWD:[0-9a-f]*]] |
| ; SAT: AliasSet[{{.*}}, 1] must alias, Mod forwarding to 0x[[FWD]] |
| ; SAT: AliasSet[0x[[FWD]], 2] may alias, Mod/Ref Pointers: (i32* %a, LocationSize::precise(4)), (i32* %a1, LocationSize::precise(4)), (i32* %b, LocationSize::precise(4)) |
| define void @mergemay(i32 %k) { |
| %a = alloca i32 |
| %b = alloca i32 |
| store i32 1, i32* %a |
| store i32 2, i32* %b |
| %a1 = getelementptr i32, i32 *%a, i32 %k |
| store i32 2, i32* %a1 |
| ret void |
| } |
| |
| ; CHECK-LABEL: 'mergemust' |
| ; NOSAT: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %a, LocationSize::precise(4)) |
| ; NOSAT: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %b, LocationSize::precise(4)) |
| ; NOSAT: AliasSet[{{.*}}, 2] may alias, Mod Pointers: (i32* %c, LocationSize::precise(4)), (i32* %d, LocationSize::precise(4)) |
| ; SAT: AliasSet[{{.*}}, 1] must alias, Mod forwarding to 0x[[FWD:[0-9a-f]*]] |
| ; SAT: AliasSet[{{.*}}, 1] must alias, Mod forwarding to 0x[[FWD]] |
| ; SAT: AliasSet[{{.*}}, 2] may alias, Mod forwarding to 0x[[FWD]] |
| ; SAT: AliasSet[0x[[FWD]], 3] may alias, Mod/Ref Pointers: (i32* %a, LocationSize::precise(4)), (i32* %b, LocationSize::precise(4)), (i32* %c, LocationSize::precise(4)), (i32* %d, LocationSize::precise(4)) |
| define void @mergemust(i32* %c, i32* %d) { |
| %a = alloca i32 |
| %b = alloca i32 |
| store i32 1, i32* %a |
| store i32 2, i32* %b |
| store i32 3, i32* %c |
| store i32 4, i32* %d |
| ret void |
| } |