llvm-6502/test/Transforms/InstCombine/or-to-xor.ll
Dan Gohman 9c7a988e3b Use "opt < %s" instead of "opt %s" so that opt doesn't print the test
filename in the output, which interferes with the tests' grep lines.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81263 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-08 22:57:49 +00:00

43 lines
899 B
LLVM

; RUN: opt < %s -instcombine -S | grep {xor i32 %a, %b} | count 4
; RUN: opt < %s -instcombine -S | not grep {and}
define i32 @func1(i32 %a, i32 %b) nounwind readnone {
entry:
%b_not = xor i32 %b, -1
%0 = and i32 %a, %b_not
%a_not = xor i32 %a, -1
%1 = and i32 %a_not, %b
%2 = or i32 %0, %1
ret i32 %2
}
define i32 @func2(i32 %a, i32 %b) nounwind readnone {
entry:
%b_not = xor i32 %b, -1
%0 = and i32 %b_not, %a
%a_not = xor i32 %a, -1
%1 = and i32 %a_not, %b
%2 = or i32 %0, %1
ret i32 %2
}
define i32 @func3(i32 %a, i32 %b) nounwind readnone {
entry:
%b_not = xor i32 %b, -1
%0 = and i32 %a, %b_not
%a_not = xor i32 %a, -1
%1 = and i32 %b, %a_not
%2 = or i32 %0, %1
ret i32 %2
}
define i32 @func4(i32 %a, i32 %b) nounwind readnone {
entry:
%b_not = xor i32 %b, -1
%0 = and i32 %b_not, %a
%a_not = xor i32 %a, -1
%1 = and i32 %b, %a_not
%2 = or i32 %0, %1
ret i32 %2
}