1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -passes=newgvn -S | FileCheck %s 3 4target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 5 6define void @patatino(ptr %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 ptr [ [[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, ptr [[MEH]], align 1 19; CHECK-NEXT: store i8 0, ptr [[BLAH]], align 1 20; CHECK-NEXT: ret void 21; 22entry: 23 br label %while.cond 24 25while.cond: 26 %meh = phi ptr [ %blah, %entry ], [ null, %while.body ] 27 switch i32 undef, label %while.body [ 28 i32 666, label %while.end 29 ] 30 31while.body: 32 br label %while.cond 33 34while.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, ptr %meh, align 1 40 store i8 0, ptr %blah, align 1 41 ret void 42} 43