llvm-6502/test/Transforms/InstCombine/and-compare.ll
2014-11-27 11:22:49 +00:00

16 lines
504 B
LLVM

; RUN: opt < %s -instcombine -S | \
; RUN: FileCheck %s
; Should be optimized to one and.
define i1 @test1(i32 %a, i32 %b) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: %1 = xor i32 %a, %b
; CHECK-NEXT: %2 = and i32 %1, 65280
; CHECK-NEXT: %tmp = icmp ne i32 %2, 0
; CHECK-NEXT: ret i1 %tmp
%tmp1 = and i32 %a, 65280 ; <i32> [#uses=1]
%tmp3 = and i32 %b, 65280 ; <i32> [#uses=1]
%tmp = icmp ne i32 %tmp1, %tmp3 ; <i1> [#uses=1]
ret i1 %tmp
}