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; RUN: opt < %s -S -instsimplify | FileCheck %s
declare i32 @llvm.bitreverse.i32(i32)
; CHECK-LABEL: @test1(
; CHECK: ret i1 false
define i1 @test1(i32 %arg) {
%a = or i32 %arg, 1
%b = call i32 @llvm.bitreverse.i32(i32 %a)
%res = icmp eq i32 %b, 0
ret i1 %res
}
; CHECK-LABEL: @test2(
; CHECK: ret i1 false
define i1 @test2(i32 %arg) {
%a = or i32 %arg, 1024
%b = call i32 @llvm.bitreverse.i32(i32 %a)
%res = icmp eq i32 %b, 0
ret i1 %res
}
; CHECK-LABEL: @test3(
; CHECK: ret i1 false
define i1 @test3(i32 %arg) {
%a = and i32 %arg, 1
%b = call i32 @llvm.bitreverse.i32(i32 %a)
%and = and i32 %b, 1
%res = icmp eq i32 %and, 1
ret i1 %res
}
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