llvm-mirror/test/Analysis/ScalarEvolution/and-xor.ll

; RUN: opt < %s -scalar-evolution -analyze | FileCheck %s

; CHECK: -->  (zext
; CHECK: -->  (zext
; CHECK-NOT: -->  (zext

define i32 @foo(i32 %x) {
  %n = and i32 %x, 255
  %y = xor i32 %n, 255
  ret i32 %y
}
FileCheck-ize tests. llvm-svn: 188971 2013-08-22 02:51:19 +02:00			`; RUN: opt < %s -scalar-evolution -analyze \| FileCheck %s`

			`; CHECK: --> (zext`
			`; CHECK: --> (zext`
			`; CHECK-NOT: --> (zext`
Teach ScalarEvolution to recognize x^-1 in the case where non-demanded bits have been stripped out by instcombine. llvm-svn: 72010 2009-05-18 18:29:04 +02:00
			`define i32 @foo(i32 %x) {`
			`%n = and i32 %x, 255`
			`%y = xor i32 %n, 255`
			`ret i32 %y`
			`}`