llvm-project/llvm/test/Transforms/FunctionAttrs/2008-09-13-VolatileRead.ll

; RUN: opt < %s -functionattrs -S | not grep read
; PR2792

@g = global i32 0		; <i32*> [#uses=1]

define i32 @f() {
	%t = volatile load i32* @g		; <i32> [#uses=1]
	ret i32 %t
}
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. llvm-svn: 81537 2009-09-12 02:01:28 +08:00			`; RUN: opt < %s -functionattrs -S \| not grep read`
Fix PR2792: treat volatile loads as writing memory somewhere. Treat stores as reading memory, just to play safe. llvm-svn: 56188 2008-09-13 20:45:50 +08:00			`; PR2792`

			`@g = global i32 0 ; <i32*> [#uses=1]`

			`define i32 @f() {`
			`%t = volatile load i32* @g ; <i32> [#uses=1]`
			`ret i32 %t`
			`}`