saturation.ll
2.52 KB
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; 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
}