diff options
Diffstat (limited to 'llvm/test/ThinLTO/X86/load-store-caching.ll')
| -rw-r--r-- | llvm/test/ThinLTO/X86/load-store-caching.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/llvm/test/ThinLTO/X86/load-store-caching.ll b/llvm/test/ThinLTO/X86/load-store-caching.ll new file mode 100644 index 00000000000..9ca9c40fd11 --- /dev/null +++ b/llvm/test/ThinLTO/X86/load-store-caching.ll @@ -0,0 +1,26 @@ +; Test that instruction operands from loads are not cached when +; processing stores. Reference from @foo to @obj should not be +; readonly or writeonly + +; RUN: opt -module-summary %s -o %t.bc +; RUN: llvm-dis %t.bc -o - | FileCheck %s + +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +%struct.S = type { %struct.Derived* } +%struct.Derived = type { i32 } +%struct.Base = type { i32 } + +@obj = dso_local local_unnamed_addr global %struct.S zeroinitializer, align 8 + +define dso_local %struct.Base* @foo() local_unnamed_addr { +entry: + %0 = load %struct.Base*, %struct.Base** bitcast (%struct.S* @obj to %struct.Base**), align 8 + store %struct.Base* null, %struct.Base** bitcast (%struct.S* @obj to %struct.Base**), align 8 + ret %struct.Base* %0 +} + +; CHECK: ^0 = module: +; CHECK-NEXT: ^1 = gv: (name: "obj", summaries: (variable: (module: ^0, flags: (linkage: external, notEligibleToImport: 0, live: 0, dsoLocal: 1, canAutoHide: 0), varFlags: (readonly: 1, writeonly: 1)))) ; guid = +; CHECK-NEXT: ^2 = gv: (name: "foo", summaries: (function: (module: ^0, flags: (linkage: external, notEligibleToImport: 0, live: 0, dsoLocal: 1, canAutoHide: 0), insts: 3, refs: (^1)))) ; guid = |
