|  | ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py | 
|  | ; RUN: opt < %s -instcombine -S | FileCheck %s | 
|  |  | 
|  | ; TODO: All of these should be optimized to less than or equal to a single | 
|  | ; instruction of select/and/or. | 
|  |  | 
|  | ; --- (A op B) op' A   /   (B op A) op' A --- | 
|  |  | 
|  | ; (A land B) land A | 
|  | define i1 @land_land_left1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_land_left1( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = select i1 [[A:%.*]], i1 [[B:%.*]], i1 false | 
|  | ; CHECK-NEXT:    ret i1 [[C]] | 
|  | ; | 
|  | %c = select i1 %A, i1 %B, i1 false | 
|  | %res = select i1 %c, i1 %A, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @land_land_left2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_land_left2( | 
|  | ; CHECK-NEXT:    [[RES:%.*]] = select i1 [[B:%.*]], i1 [[A:%.*]], i1 false | 
|  | ; CHECK-NEXT:    ret i1 [[RES]] | 
|  | ; | 
|  | %c = select i1 %B, i1 %A, i1 false | 
|  | %res = select i1 %c, i1 %A, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; (A land B) band A | 
|  | define i1 @land_band_left1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_band_left1( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = select i1 [[A:%.*]], i1 [[B:%.*]], i1 false | 
|  | ; CHECK-NEXT:    ret i1 [[C]] | 
|  | ; | 
|  | %c = select i1 %A, i1 %B, i1 false | 
|  | %res = and i1 %c, %A | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @land_band_left2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_band_left2( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = select i1 [[B:%.*]], i1 [[A:%.*]], i1 false | 
|  | ; CHECK-NEXT:    ret i1 [[C]] | 
|  | ; | 
|  | %c = select i1 %B, i1 %A, i1 false | 
|  | %res = and i1 %c, %A | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; (A land B) lor A | 
|  | define i1 @land_lor_left1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_lor_left1( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = select i1 %A, i1 %B, i1 false | 
|  | %res = select i1 %c, i1 true, i1 %A | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @land_lor_left2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_lor_left2( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = select i1 [[B:%.*]], i1 [[A:%.*]], i1 false | 
|  | ; CHECK-NEXT:    [[RES:%.*]] = select i1 [[C]], i1 true, i1 [[A]] | 
|  | ; CHECK-NEXT:    ret i1 [[RES]] | 
|  | ; | 
|  | %c = select i1 %B, i1 %A, i1 false | 
|  | %res = select i1 %c, i1 true, i1 %A | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; (A land B) bor A | 
|  | define i1 @land_bor_left1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_bor_left1( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = select i1 %A, i1 %B, i1 false | 
|  | %res = or i1 %c, %A | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @land_bor_left2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_bor_left2( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = select i1 %B, i1 %A, i1 false | 
|  | %res = or i1 %c, %A | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; (A band B) land A | 
|  | define i1 @band_land_left1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @band_land_left1( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = and i1 [[A:%.*]], [[B:%.*]] | 
|  | ; CHECK-NEXT:    ret i1 [[C]] | 
|  | ; | 
|  | %c = and i1 %A, %B | 
|  | %res = select i1 %c, i1 %A, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @band_land_left2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @band_land_left2( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = and i1 [[B:%.*]], [[A:%.*]] | 
|  | ; CHECK-NEXT:    ret i1 [[C]] | 
|  | ; | 
|  | %c = and i1 %B, %A | 
|  | %res = select i1 %c, i1 %A, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; (A band B) lor A | 
|  | define i1 @band_lor_left1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @band_lor_left1( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = and i1 %A, %B | 
|  | %res = select i1 %c, i1 true, i1 %A | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @band_lor_left2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @band_lor_left2( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = and i1 %B, %A | 
|  | %res = select i1 %c, i1 true, i1 %A | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; (A lor B) land A | 
|  | define i1 @lor_land_left1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_land_left1( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = select i1 %A, i1 true, i1 %B | 
|  | %res = select i1 %c, i1 %A, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @lor_land_left2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_land_left2( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = select i1 [[B:%.*]], i1 true, i1 [[A:%.*]] | 
|  | ; CHECK-NEXT:    [[RES:%.*]] = select i1 [[C]], i1 [[A]], i1 false | 
|  | ; CHECK-NEXT:    ret i1 [[RES]] | 
|  | ; | 
|  | %c = select i1 %B, i1 true, i1 %A | 
|  | %res = select i1 %c, i1 %A, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; (A lor B) band A | 
|  | define i1 @lor_band_left1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_band_left1( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = select i1 %A, i1 true, i1 %B | 
|  | %res = and i1 %c, %A | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @lor_band_left2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_band_left2( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = select i1 %B, i1 true, i1 %A | 
|  | %res = and i1 %c, %A | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; (A lor B) lor A | 
|  | define i1 @lor_lor_left1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_lor_left1( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = select i1 [[A:%.*]], i1 true, i1 [[B:%.*]] | 
|  | ; CHECK-NEXT:    ret i1 [[C]] | 
|  | ; | 
|  | %c = select i1 %A, i1 true, i1 %B | 
|  | %res = select i1 %c, i1 true, i1 %A | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @lor_lor_left2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_lor_left2( | 
|  | ; CHECK-NEXT:    [[RES:%.*]] = select i1 [[B:%.*]], i1 true, i1 [[A:%.*]] | 
|  | ; CHECK-NEXT:    ret i1 [[RES]] | 
|  | ; | 
|  | %c = select i1 %B, i1 true, i1 %A | 
|  | %res = select i1 %c, i1 true, i1 %A | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; (A lor B) bor A | 
|  | define i1 @lor_bor_left1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_bor_left1( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = select i1 [[A:%.*]], i1 true, i1 [[B:%.*]] | 
|  | ; CHECK-NEXT:    ret i1 [[C]] | 
|  | ; | 
|  | %c = select i1 %A, i1 true, i1 %B | 
|  | %res = or i1 %c, %A | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @lor_bor_left2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_bor_left2( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = select i1 [[B:%.*]], i1 true, i1 [[A:%.*]] | 
|  | ; CHECK-NEXT:    ret i1 [[C]] | 
|  | ; | 
|  | %c = select i1 %B, i1 true, i1 %A | 
|  | %res = or i1 %c, %A | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; (A bor B) land A | 
|  | define i1 @bor_land_left1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @bor_land_left1( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = or i1 %A, %B | 
|  | %res = select i1 %c, i1 %A, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @bor_land_left2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @bor_land_left2( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = or i1 %B, %A | 
|  | %res = select i1 %c, i1 %A, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; (A bor B) lor A | 
|  | define i1 @bor_lor_left1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @bor_lor_left1( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = or i1 [[A:%.*]], [[B:%.*]] | 
|  | ; CHECK-NEXT:    ret i1 [[C]] | 
|  | ; | 
|  | %c = or i1 %A, %B | 
|  | %res = select i1 %c, i1 true, i1 %A | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @bor_lor_left2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @bor_lor_left2( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = or i1 [[B:%.*]], [[A:%.*]] | 
|  | ; CHECK-NEXT:    ret i1 [[C]] | 
|  | ; | 
|  | %c = or i1 %B, %A | 
|  | %res = select i1 %c, i1 true, i1 %A | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; --- A op (A op' B)   /   A op (B op' A) --- | 
|  |  | 
|  | ; A land (A land B) | 
|  | define i1 @land_land_right1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_land_right1( | 
|  | ; CHECK-NEXT:    [[RES:%.*]] = select i1 [[A:%.*]], i1 [[B:%.*]], i1 false | 
|  | ; CHECK-NEXT:    ret i1 [[RES]] | 
|  | ; | 
|  | %c = select i1 %A, i1 %B, i1 false | 
|  | %res = select i1 %A, i1 %c, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @land_land_right2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_land_right2( | 
|  | ; CHECK-NEXT:    [[RES:%.*]] = select i1 [[A:%.*]], i1 [[B:%.*]], i1 false | 
|  | ; CHECK-NEXT:    ret i1 [[RES]] | 
|  | ; | 
|  | %c = select i1 %B, i1 %A, i1 false | 
|  | %res = select i1 %A, i1 %c, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; A band (A land B) | 
|  | define i1 @land_band_right1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_band_right1( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = select i1 [[A:%.*]], i1 [[B:%.*]], i1 false | 
|  | ; CHECK-NEXT:    ret i1 [[C]] | 
|  | ; | 
|  | %c = select i1 %A, i1 %B, i1 false | 
|  | %res = and i1 %A, %c | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @land_band_right2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_band_right2( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = select i1 [[B:%.*]], i1 [[A:%.*]], i1 false | 
|  | ; CHECK-NEXT:    ret i1 [[C]] | 
|  | ; | 
|  | %c = select i1 %B, i1 %A, i1 false | 
|  | %res = and i1 %A, %c | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; A lor (A land B) | 
|  | define i1 @land_lor_right1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_lor_right1( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = select i1 %A, i1 %B, i1 false | 
|  | %res = select i1 %A, i1 true, i1 %c | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @land_lor_right2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_lor_right2( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = select i1 %B, i1 %A, i1 false | 
|  | %res = select i1 %A, i1 true, i1 %c | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; A bor (A land B) | 
|  | define i1 @land_bor_right1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_bor_right1( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = select i1 %A, i1 %B, i1 false | 
|  | %res = or i1 %A, %c | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @land_bor_right2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @land_bor_right2( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = select i1 %B, i1 %A, i1 false | 
|  | %res = or i1 %A, %c | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; A land (A band B) | 
|  | define i1 @band_land_right1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @band_land_right1( | 
|  | ; CHECK-NEXT:    [[RES:%.*]] = select i1 [[A:%.*]], i1 [[B:%.*]], i1 false | 
|  | ; CHECK-NEXT:    ret i1 [[RES]] | 
|  | ; | 
|  | %c = and i1 %A, %B | 
|  | %res = select i1 %A, i1 %c, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @band_land_right2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @band_land_right2( | 
|  | ; CHECK-NEXT:    [[RES:%.*]] = select i1 [[A:%.*]], i1 [[B:%.*]], i1 false | 
|  | ; CHECK-NEXT:    ret i1 [[RES]] | 
|  | ; | 
|  | %c = and i1 %B, %A | 
|  | %res = select i1 %A, i1 %c, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; A lor (A band B) | 
|  | define i1 @band_lor_right1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @band_lor_right1( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = and i1 %A, %B | 
|  | %res = select i1 %A, i1 true, i1 %c | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @band_lor_right2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @band_lor_right2( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = and i1 %B, %A | 
|  | %res = select i1 %A, i1 true, i1 %c | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; A land (A lor B) | 
|  | define i1 @lor_land_right1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_land_right1( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = select i1 %A, i1 true, i1 %B | 
|  | %res = select i1 %A, i1 %c, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @lor_land_right2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_land_right2( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = select i1 %B, i1 true, i1 %A | 
|  | %res = select i1 %A, i1 %c, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; A band (A lor B) | 
|  | define i1 @lor_band_right1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_band_right1( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = select i1 %A, i1 true, i1 %B | 
|  | %res = and i1 %A, %c | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @lor_band_right2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_band_right2( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = select i1 %B, i1 true, i1 %A | 
|  | %res = and i1 %A, %c | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; A lor (A lor B) | 
|  | define i1 @lor_lor_right1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_lor_right1( | 
|  | ; CHECK-NEXT:    [[RES:%.*]] = select i1 [[A:%.*]], i1 true, i1 [[B:%.*]] | 
|  | ; CHECK-NEXT:    ret i1 [[RES]] | 
|  | ; | 
|  | %c = select i1 %A, i1 true, i1 %B | 
|  | %res = select i1 %A, i1 true, i1 %c | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @lor_lor_right2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_lor_right2( | 
|  | ; CHECK-NEXT:    [[RES:%.*]] = select i1 [[A:%.*]], i1 true, i1 [[B:%.*]] | 
|  | ; CHECK-NEXT:    ret i1 [[RES]] | 
|  | ; | 
|  | %c = select i1 %B, i1 true, i1 %A | 
|  | %res = select i1 %A, i1 true, i1 %c | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; A bor (A lor B) | 
|  | define i1 @lor_bor_right1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_bor_right1( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = select i1 [[A:%.*]], i1 true, i1 [[B:%.*]] | 
|  | ; CHECK-NEXT:    ret i1 [[C]] | 
|  | ; | 
|  | %c = select i1 %A, i1 true, i1 %B | 
|  | %res = or i1 %A, %c | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @lor_bor_right2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @lor_bor_right2( | 
|  | ; CHECK-NEXT:    [[C:%.*]] = select i1 [[B:%.*]], i1 true, i1 [[A:%.*]] | 
|  | ; CHECK-NEXT:    ret i1 [[C]] | 
|  | ; | 
|  | %c = select i1 %B, i1 true, i1 %A | 
|  | %res = or i1 %A, %c | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; A land (A bor B) | 
|  | define i1 @bor_land_right1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @bor_land_right1( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = or i1 %A, %B | 
|  | %res = select i1 %A, i1 %c, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @bor_land_right2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @bor_land_right2( | 
|  | ; CHECK-NEXT:    ret i1 [[A:%.*]] | 
|  | ; | 
|  | %c = or i1 %B, %A | 
|  | %res = select i1 %A, i1 %c, i1 false | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; A lor (A bor B) | 
|  | define i1 @bor_lor_right1(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @bor_lor_right1( | 
|  | ; CHECK-NEXT:    [[RES:%.*]] = select i1 [[A:%.*]], i1 true, i1 [[B:%.*]] | 
|  | ; CHECK-NEXT:    ret i1 [[RES]] | 
|  | ; | 
|  | %c = or i1 %A, %B | 
|  | %res = select i1 %A, i1 true, i1 %c | 
|  | ret i1 %res | 
|  | } | 
|  | define i1 @bor_lor_right2(i1 %A, i1 %B) { | 
|  | ; CHECK-LABEL: @bor_lor_right2( | 
|  | ; CHECK-NEXT:    [[RES:%.*]] = select i1 [[A:%.*]], i1 true, i1 [[B:%.*]] | 
|  | ; CHECK-NEXT:    ret i1 [[RES]] | 
|  | ; | 
|  | %c = or i1 %B, %A | 
|  | %res = select i1 %A, i1 true, i1 %c | 
|  | ret i1 %res | 
|  | } | 
|  |  | 
|  | ; Value equivalence substitution does not account for vector | 
|  | ; transforms, so it needs a scalar condition operand. | 
|  | ; For example, this would miscompile if %a = {1, 0}. | 
|  |  | 
|  | define <2 x i1> @PR50500_trueval(<2 x i1> %a, <2 x i1> %b) { | 
|  | ; CHECK-LABEL: @PR50500_trueval( | 
|  | ; CHECK-NEXT:    [[S:%.*]] = shufflevector <2 x i1> [[A:%.*]], <2 x i1> poison, <2 x i32> <i32 1, i32 0> | 
|  | ; CHECK-NEXT:    [[R:%.*]] = select <2 x i1> [[A]], <2 x i1> [[S]], <2 x i1> [[B:%.*]] | 
|  | ; CHECK-NEXT:    ret <2 x i1> [[R]] | 
|  | ; | 
|  | %s = shufflevector <2 x i1> %a, <2 x i1> poison, <2 x i32> <i32 1, i32 0> | 
|  | %r = select <2 x i1> %a, <2 x i1> %s, <2 x i1> %b | 
|  | ret <2 x i1> %r | 
|  | } | 
|  |  | 
|  | define <2 x i1> @PR50500_falseval(<2 x i1> %a, <2 x i1> %b) { | 
|  | ; CHECK-LABEL: @PR50500_falseval( | 
|  | ; CHECK-NEXT:    [[S:%.*]] = shufflevector <2 x i1> [[A:%.*]], <2 x i1> poison, <2 x i32> <i32 1, i32 0> | 
|  | ; CHECK-NEXT:    [[R:%.*]] = select <2 x i1> [[A]], <2 x i1> [[B:%.*]], <2 x i1> [[S]] | 
|  | ; CHECK-NEXT:    ret <2 x i1> [[R]] | 
|  | ; | 
|  | %s = shufflevector <2 x i1> %a, <2 x i1> poison, <2 x i32> <i32 1, i32 0> | 
|  | %r = select <2 x i1> %a, <2 x i1> %b, <2 x i1> %s | 
|  | ret <2 x i1> %r | 
|  | } |