llvm/test/Transforms/InstCombine/bit-checks.ll
Owen Anderson 96fe621e07 Reapply r108378, with bugfixes, testcase, and improved comment formatting.
This now passes LIT, nighty test, and llvm-gcc bootstrap on my machine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108422 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15 15:00:23 +00:00

16 lines
634 B
LLVM

; This test makes sure that these instructions are properly eliminated.
;
; RUN: opt < %s -instcombine -S | \
; RUN: not grep {tobool}
; END.
define i32 @main(i32 %argc, i8** %argv) nounwind ssp {
entry:
%and = and i32 %argc, 1 ; <i32> [#uses=1]
%tobool = icmp ne i32 %and, 0 ; <i1> [#uses=1]
%and2 = and i32 %argc, 2 ; <i32> [#uses=1]
%tobool3 = icmp ne i32 %and2, 0 ; <i1> [#uses=1]
%or.cond = and i1 %tobool, %tobool3 ; <i1> [#uses=1]
%retval.0 = select i1 %or.cond, i32 2, i32 1 ; <i32> [#uses=1]
ret i32 %retval.0
}