2010-01-19 05:58:32 +08:00
|
|
|
; RUN: opt < %s -reassociate -die -S | FileCheck %s
|
2005-05-09 02:54:40 +08:00
|
|
|
|
2008-03-19 12:36:04 +08:00
|
|
|
define i32 @test1(i32 %a, i32 %b) {
|
2010-01-19 05:58:32 +08:00
|
|
|
%tmp.2 = and i32 %b, %a
|
|
|
|
%tmp.4 = xor i32 %a, -1
|
2008-03-19 12:36:04 +08:00
|
|
|
; (A&B)&~A == 0
|
2010-01-19 05:58:32 +08:00
|
|
|
%tmp.5 = and i32 %tmp.2, %tmp.4
|
2008-03-19 12:36:04 +08:00
|
|
|
ret i32 %tmp.5
|
2013-07-14 09:42:54 +08:00
|
|
|
; CHECK-LABEL: @test1(
|
2010-01-19 05:58:32 +08:00
|
|
|
; CHECK: ret i32 0
|
2005-05-09 02:54:40 +08:00
|
|
|
}
|
|
|
|
|
2008-03-19 12:36:04 +08:00
|
|
|
define i32 @test2(i32 %a, i32 %b) {
|
2010-01-19 05:58:32 +08:00
|
|
|
%tmp.1 = and i32 %a, 1234
|
|
|
|
%tmp.2 = and i32 %b, %tmp.1
|
|
|
|
%tmp.4 = xor i32 %a, -1
|
2008-03-19 12:36:04 +08:00
|
|
|
; A&~A == 0
|
2010-01-19 05:58:32 +08:00
|
|
|
%tmp.5 = and i32 %tmp.2, %tmp.4
|
2008-03-19 12:36:04 +08:00
|
|
|
ret i32 %tmp.5
|
2013-07-14 09:42:54 +08:00
|
|
|
; CHECK-LABEL: @test2(
|
2010-01-19 05:58:32 +08:00
|
|
|
; CHECK: ret i32 0
|
2005-05-09 02:54:40 +08:00
|
|
|
}
|
|
|
|
|
2008-03-19 12:36:04 +08:00
|
|
|
define i32 @test3(i32 %b, i32 %a) {
|
2010-01-19 05:58:32 +08:00
|
|
|
%tmp.1 = add i32 %a, 1234
|
|
|
|
%tmp.2 = add i32 %b, %tmp.1
|
|
|
|
%tmp.4 = sub i32 0, %a
|
2008-03-19 12:36:04 +08:00
|
|
|
; (b+(a+1234))+-a -> b+1234
|
2010-01-19 05:58:32 +08:00
|
|
|
%tmp.5 = add i32 %tmp.2, %tmp.4
|
2008-03-19 12:36:04 +08:00
|
|
|
ret i32 %tmp.5
|
2013-07-14 09:42:54 +08:00
|
|
|
; CHECK-LABEL: @test3(
|
2010-01-19 05:58:32 +08:00
|
|
|
; CHECK: %tmp.5 = add i32 %b, 1234
|
|
|
|
; CHECK: ret i32 %tmp.5
|
2005-05-09 02:54:40 +08:00
|
|
|
}
|
2014-05-31 23:01:54 +08:00
|
|
|
|
|
|
|
define i32 @test4(i32 %b, i32 %a) {
|
|
|
|
%tmp.1 = add i32 %a, 1234
|
|
|
|
%tmp.2 = add i32 %b, %tmp.1
|
|
|
|
%tmp.4 = xor i32 %a, -1
|
|
|
|
; (b+(a+1234))+~a -> b+1233
|
|
|
|
%tmp.5 = add i32 %tmp.2, %tmp.4
|
|
|
|
ret i32 %tmp.5
|
|
|
|
; CHECK-LABEL: @test4(
|
|
|
|
; CHECK: %tmp.5 = add i32 %b, 1233
|
|
|
|
; CHECK: ret i32 %tmp.5
|
|
|
|
}
|