From 1d650eeaf15bc0c8868c5c312c900bcb9645e014 Mon Sep 17 00:00:00 2001 From: Duncan Sands Date: Sat, 4 Oct 2008 13:24:24 +0000 Subject: Ignore loads from and stores to local memory (i.e. allocas) when deciding whether to mark a function readnone/readonly. Since the pass is currently run before SROA, this may be quite helpful. Requested by Chris on IRC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57050 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/Transforms/AddReadAttrs/2008-10-04-LocalMemory.ll | 10 ++++++++++ 1 file changed, 10 insertions(+) create mode 100644 test/Transforms/AddReadAttrs/2008-10-04-LocalMemory.ll (limited to 'test') diff --git a/test/Transforms/AddReadAttrs/2008-10-04-LocalMemory.ll b/test/Transforms/AddReadAttrs/2008-10-04-LocalMemory.ll new file mode 100644 index 0000000..0f63c1a --- /dev/null +++ b/test/Transforms/AddReadAttrs/2008-10-04-LocalMemory.ll @@ -0,0 +1,10 @@ +; RUN: llvm-as < %s | opt -addreadattrs | llvm-dis | grep readnone | count 2 + +declare i32 @g(i32*) readnone + +define i32 @f() { + %x = alloca i32 ; [#uses=2] + store i32 0, i32* %x + %y = call i32 @g(i32* %x) ; [#uses=1] + ret i32 %y +} -- cgit v1.1