| ; RUN: opt -O3 -S < %s | FileCheck %s |
| target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128" |
| target triple = "aarch64" |
| |
| @v = internal unnamed_addr global i32 0, align 4 |
| @p = common global i32* null, align 8 |
| |
| ; Function Attrs: norecurse nounwind |
| define void @f(i32 %n) { |
| entry: |
| %0 = load i32, i32* @v, align 4 |
| %inc = add nsw i32 %0, 1 |
| store i32 %inc, i32* @v, align 4 |
| %1 = load i32*, i32** @p, align 8 |
| store i32 %n, i32* %1, align 4 |
| %2 = load i32, i32* @v, align 4 |
| %inc1 = add nsw i32 %2, 1 |
| store i32 %inc1, i32* @v, align 4 |
| ret void |
| } |
| |
| ; check variable v is loaded only once after optimization, which should be |
| ; prove that globalsAA survives until the optimization that can use it to |
| ; optimize away the duplicate load/stores on variable v. |
| ; CHECK: load i32, i32* @v, align 4 |
| ; CHECK-NOT: load i32, i32* @v, align 4 |
