54 lines
2.5 KiB
LLVM
54 lines
2.5 KiB
LLVM
; RUN: opt -basicaa -print-alias-sets -alias-set-saturation-threshold=2 -S -o - < %s 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=NOSAT
|
|
; RUN: opt -basicaa -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
|
|
}
|