| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -basic-aa -newgvn -S | FileCheck %s |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| |
| define void @patatino(i8* %blah) { |
| ; CHECK-LABEL: @patatino( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[WHILE_COND:%.*]] |
| ; CHECK: while.cond: |
| ; CHECK-NEXT: [[MEH:%.*]] = phi i8* [ [[BLAH:%.*]], [[ENTRY:%.*]] ], [ null, [[WHILE_BODY:%.*]] ] |
| ; CHECK-NEXT: switch i32 undef, label [[WHILE_BODY]] [ |
| ; CHECK-NEXT: i32 666, label [[WHILE_END:%.*]] |
| ; CHECK-NEXT: ] |
| ; CHECK: while.body: |
| ; CHECK-NEXT: br label [[WHILE_COND]] |
| ; CHECK: while.end: |
| ; CHECK-NEXT: store i8 0, i8* [[MEH]], align 1 |
| ; CHECK-NEXT: store i8 0, i8* [[BLAH]], align 1 |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %while.cond |
| |
| while.cond: |
| %meh = phi i8* [ %blah, %entry ], [ null, %while.body ] |
| switch i32 undef, label %while.body [ |
| i32 666, label %while.end |
| ] |
| |
| while.body: |
| br label %while.cond |
| |
| while.end: |
| ;; These two stores will initially be considered equivalent, but then proven not. |
| ;; the second store would previously end up deciding it's equivalent to a previous |
| ;; store, but it was really just finding an optimistic version of itself |
| ;; in the congruence class. |
| store i8 0, i8* %meh, align 1 |
| store i8 0, i8* %blah, align 1 |
| ret void |
| } |
