llvm-6502/test/Transforms/FunctionAttrs/2008-10-04-LocalMemory.ll

; RUN: opt < %s -functionattrs -S | grep readnone | count 2

declare i32 @g(i32*) readnone

define i32 @f() {
	%x = alloca i32		; <i32*> [#uses=2]
	store i32 0, i32* %x
	%y = call i32 @g(i32* %x)		; <i32> [#uses=1]
	ret i32 %y
}
Change tests from "opt %s" to "opt < %s" so that opt doesn't see the input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8 2009-09-11 18:01:28 +00:00			`; RUN: opt < %s -functionattrs -S \| grep readnone \| count 2`
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 2008-10-04 13:24:24 +00:00
			`declare i32 @g(i32*) readnone`

			`define i32 @f() {`
			`%x = alloca i32 ; <i32*> [#uses=2]`
			`store i32 0, i32* %x`
			`%y = call i32 @g(i32* %x) ; <i32> [#uses=1]`
			`ret i32 %y`
			`}`