1 ; Tests to make sure elimination of casts is working correctly
2 ; RUN: opt < %s -instcombine -S | \
3 ; RUN: notcast {} {%c1.*}
5 define i64 @test_sext_zext(i16 %A) {
6 %c1 = zext i16 %A to i32 ; <i32> [#uses=1]
7 %c2 = sext i32 %c1 to i64 ; <i64> [#uses=1]
12 define i32 @test2(i64 %tmp) nounwind readnone {
14 %tmp5 = trunc i64 %tmp to i8 ; <i8> [#uses=1]
15 %tmp7 = lshr i64 %tmp, 8 ; <i64> [#uses=1]
16 %tmp8 = trunc i64 %tmp7 to i8 ; <i8> [#uses=1]
17 %tmp10 = lshr i64 %tmp, 16 ; <i64> [#uses=1]
18 %tmp11 = trunc i64 %tmp10 to i8 ; <i8> [#uses=1]
19 %tmp13 = lshr i64 %tmp, 24 ; <i64> [#uses=1]
20 %tmp14 = trunc i64 %tmp13 to i8 ; <i8> [#uses=1]
21 %tmp1 = zext i8 %tmp5 to i32 ; <i32> [#uses=1]
22 %tmp2 = zext i8 %tmp8 to i32 ; <i32> [#uses=1]
23 %tmp3 = shl i32 %tmp2, 8 ; <i32> [#uses=1]
24 %tmp4 = zext i8 %tmp11 to i32 ; <i32> [#uses=1]
25 %tmp6 = shl i32 %tmp4, 16 ; <i32> [#uses=1]
26 %tmp9 = zext i8 %tmp14 to i32 ; <i32> [#uses=1]
27 %tmp12 = shl i32 %tmp9, 24 ; <i32> [#uses=1]
28 %tmp15 = or i32 %tmp12, %tmp1 ; <i32> [#uses=1]
29 %tmp16 = or i32 %tmp15, %tmp6 ; <i32> [#uses=1]
30 %tmp17 = or i32 %tmp16, %tmp3 ; <i32> [#uses=1]