llvm-6502/test/Transforms/InstCombine/2012-3-15-or-xor-constant.ll

; RUN: opt < %s -instcombine -S | FileCheck %s
; PR12234

@g = extern_weak global i32
define i32 @function(i32 %x) nounwind {
entry:
  %xor = xor i32 %x, 1
  store volatile i32 %xor, i32* inttoptr (i64 1 to i32*), align 4
  %or4 = or i32 or (i32 zext (i1 icmp eq (i32* @g, i32* null) to i32), i32 1), %xor
  ret i32 %or4
}
; CHECK: define i32 @function
In InstCombiner::visitOr, make sure we reverse the operand swap used for checking for or-of-xor operations after those checks; a later check expects that any constant will be in Op1. PR12234. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152884 91177308-0d34-0410-b5e6-96231b3b80d8 2012-03-16 00:52:42 +00:00			`; RUN: opt < %s -instcombine -S \| FileCheck %s`
			`; PR12234`

			`@g = extern_weak global i32`
			`define i32 @function(i32 %x) nounwind {`
			`entry:`
			`%xor = xor i32 %x, 1`
			`store volatile i32 %xor, i32* inttoptr (i64 1 to i32*), align 4`
			`%or4 = or i32 or (i32 zext (i1 icmp eq (i32* @g, i32* null) to i32), i32 1), %xor`
			`ret i32 %or4`
			`}`
			`; CHECK: define i32 @function`