1 ; Tests to make sure elimination of casts is working correctly
2 ; RUN: opt < %s -instcombine -S | FileCheck %s
4 define i17 @test1(i17 %a) {
5 %tmp = zext i17 %a to i37 ; <i37> [#uses=2]
6 %tmp21 = lshr i37 %tmp, 8 ; <i37> [#uses=1]
7 ; CHECK: %tmp21 = lshr i17 %a, 8
8 %tmp5 = shl i37 %tmp, 8 ; <i37> [#uses=1]
9 ; CHECK: %tmp5 = shl i17 %a, 8
10 %tmp.upgrd.32 = or i37 %tmp21, %tmp5 ; <i37> [#uses=1]
11 ; CHECK: %tmp.upgrd.32 = or i17 %tmp21, %tmp5
12 %tmp.upgrd.3 = trunc i37 %tmp.upgrd.32 to i17 ; <i17> [#uses=1]
14 ; CHECK: ret i17 %tmp.upgrd.32
17 define i167 @test2(i167 %a) {
18 %tmp = zext i167 %a to i577 ; <i577> [#uses=2]
19 %tmp21 = lshr i577 %tmp, 9 ; <i577> [#uses=1]
20 ; CHECK: %tmp21 = lshr i167 %a, 9
21 %tmp5 = shl i577 %tmp, 8 ; <i577> [#uses=1]
22 ; CHECK: %tmp5 = shl i167 %a, 8
23 %tmp.upgrd.32 = or i577 %tmp21, %tmp5 ; <i577> [#uses=1]
24 ; CHECK: %tmp.upgrd.32 = or i167 %tmp21, %tmp5
25 %tmp.upgrd.3 = trunc i577 %tmp.upgrd.32 to i167 ; <i167> [#uses=1]
27 ; CHECK: ret i167 %tmp.upgrd.32