1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2 ; RUN: opt < %s -basicaa -newgvn -S | FileCheck %s 3 4 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 5 6 define void @patatino(i8* %blah) { 7 ; CHECK-LABEL: @patatino( 8 ; CHECK-NEXT: entry: 9 ; CHECK-NEXT: br label [[WHILE_COND:%.*]] 10 ; CHECK: while.cond: 11 ; CHECK-NEXT: [[MEH:%.*]] = phi i8* [ [[BLAH:%.*]], [[ENTRY:%.*]] ], [ null, [[WHILE_BODY:%.*]] ] 12 ; CHECK-NEXT: switch i32 undef, label [[WHILE_BODY]] [ 13 ; CHECK-NEXT: i32 666, label [[WHILE_END:%.*]] 14 ; CHECK-NEXT: ] 15 ; CHECK: while.body: 16 ; CHECK-NEXT: br label [[WHILE_COND]] 17 ; CHECK: while.end: 18 ; CHECK-NEXT: store i8 0, i8* [[MEH]], align 1 19 ; CHECK-NEXT: store i8 0, i8* [[BLAH]], align 1 20 ; CHECK-NEXT: ret void 21 ; 22 entry: 23 br label %while.cond 24 25 while.cond: 26 %meh = phi i8* [ %blah, %entry ], [ null, %while.body ] 27 switch i32 undef, label %while.body [ 28 i32 666, label %while.end 29 ] 30 31 while.body: 32 br label %while.cond 33 34 while.end: 35 ;; These two stores will initially be considered equivalent, but then proven not. 36 ;; the second store would previously end up deciding it's equivalent to a previous 37 ;; store, but it was really just finding an optimistic version of itself 38 ;; in the congruence class. 39 store i8 0, i8* %meh, align 1 40 store i8 0, i8* %blah, align 1 41 ret void 42 } 43
