llvm-6502/2010-10-30-volatile.ll at 42c31a70735e55bf82e66a9315c97d1821c9a798 - llvm-6502 - Applefritter: Git

6502/llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-30 17:33:24 +00:00

Duncan Sands ad6f541840 If a function does a volatile load from a global constant, do not

consider it to be readonly.  In fact, don't even consider it to be
readonly if it does a volatile load from an AllocaInst either (it
is debatable as to whether readonly would be correct or not in this
case; play safe for the moment).  This fixes PR8279.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117783 91177308-0d34-0410-b5e6-96231b3b80d8

2010-10-30 12:59:44 +00:00

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 ; RUN: opt < %s -functionattrs -S | FileCheck %s
 ; PR8279
 @g = constant i32 1
 define void @foo() {
 ; CHECK: void @foo() {
   %tmp = volatile load i32* @g
   ret void
 }