1; RUN: opt -passes=print-alias-sets -alias-set-saturation-threshold=4 -S -o - < %s 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=NOSAT 2; RUN: opt -passes=print-alias-sets -alias-set-saturation-threshold=3 -S -o - < %s 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=SAT 3 4; CHECK-LABEL: 'nomerge' 5; CHECK: AliasSet[{{.*}}, 1] must alias, Mod Memory locations: (ptr %a, LocationSize::precise(4)) 6; CHECK: AliasSet[{{.*}}, 2] may alias, Mod Memory locations: (ptr %b, LocationSize::precise(4)), (ptr %b1, LocationSize::precise(4)) 7define void @nomerge(i32 %k) { 8 %a = alloca i32 9 %b = alloca [10 x i32] 10 store i32 1, ptr %a 11 store i32 2, ptr %b 12 %b1 = getelementptr i32, ptr %b, i32 %k 13 store i32 3, ptr %b1 14 ret void 15} 16 17; CHECK-LABEL: 'mergemay' 18; NOSAT: AliasSet[{{.*}}, 3] may alias, Mod Memory locations: (ptr %a, LocationSize::precise(4)), (ptr %a1, LocationSize::precise(4)), (ptr %a2, LocationSize::precise(4)) 19; NOSAT: AliasSet[{{.*}}, 1] must alias, Mod Memory locations: (ptr %b, LocationSize::precise(4)) 20; SAT: AliasSet[{{.*}}, 3] may alias, Mod forwarding to 0x[[FWD:[0-9a-f]*]] 21; SAT: AliasSet[{{.*}}, 1] must alias, Mod forwarding to 0x[[FWD]] 22; SAT: AliasSet[0x[[FWD]], 2] may alias, Mod/Ref Memory locations: (ptr %a, LocationSize::precise(4)), (ptr %a1, LocationSize::precise(4)), (ptr %a2, LocationSize::precise(4)), (ptr %b, LocationSize::precise(4)) 23define void @mergemay(i32 %k, i32 %l) { 24 %a = alloca i32 25 %b = alloca i32 26 store i32 1, ptr %a 27 store i32 2, ptr %b 28 %a1 = getelementptr i32, ptr %a, i32 %k 29 store i32 2, ptr %a1 30 %a2 = getelementptr i32, ptr %a, i32 %l 31 store i32 2, ptr %a2 32 ret void 33} 34 35; CHECK-LABEL: 'mergemust' 36; NOSAT: AliasSet[{{.*}}, 1] must alias, Mod Memory locations: (ptr %a, LocationSize::precise(4)) 37; NOSAT: AliasSet[{{.*}}, 1] must alias, Mod Memory locations: (ptr %b, LocationSize::precise(4)) 38; NOSAT: AliasSet[{{.*}}, 2] may alias, Mod Memory locations: (ptr %c, LocationSize::precise(4)), (ptr %d, LocationSize::precise(4)) 39; SAT: AliasSet[{{.*}}, 1] must alias, Mod forwarding to 0x[[FWD:[0-9a-f]*]] 40; SAT: AliasSet[{{.*}}, 1] must alias, Mod forwarding to 0x[[FWD]] 41; SAT: AliasSet[{{.*}}, 2] may alias, Mod forwarding to 0x[[FWD]] 42; SAT: AliasSet[0x[[FWD]], 3] may alias, Mod/Ref Memory locations: (ptr %a, LocationSize::precise(4)), (ptr %b, LocationSize::precise(4)), (ptr %c, LocationSize::precise(4)), (ptr %d, LocationSize::precise(4)) 43define void @mergemust(ptr %c, ptr %d) { 44 %a = alloca i32 45 %b = alloca i32 46 store i32 1, ptr %a 47 store i32 2, ptr %b 48 store i32 3, ptr %c 49 store i32 4, ptr %d 50 ret void 51} 52