1 ; RUN: opt < %s -instcombine -S | FileCheck %s
2 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
4 ; Instcombine should be able to eliminate all of these ext casts.
8 define i64 @test1(i64 %a) {
9 %b = trunc i64 %a to i32
11 %d = zext i32 %c to i64
12 call void @use(i32 %b)
15 ; CHECK: %d = and i64 %a, 15
18 define i64 @test2(i64 %a) {
19 %b = trunc i64 %a to i32
22 %d = sext i32 %q to i64
23 call void @use(i32 %b)
26 ; CHECK: shl i64 %a, 36
27 ; CHECK: %d = ashr i64 {{.*}}, 36
30 define i64 @test3(i64 %a) {
31 %b = trunc i64 %a to i32
33 %d = zext i32 %c to i64
34 call void @use(i32 %b)
37 ; CHECK: %d = and i64 %a, 8
40 define i64 @test4(i64 %a) {
41 %b = trunc i64 %a to i32
44 %d = zext i32 %x to i64
45 call void @use(i32 %b)
48 ; CHECK: = and i64 %a, 8
49 ; CHECK: %d = xor i64 {{.*}}, 8
53 define i32 @test5(i32 %A) {
54 %B = zext i32 %A to i128
56 %D = trunc i128 %C to i32
59 ; CHECK: %C = lshr i32 %A, 16
63 define i32 @test6(i64 %A) {
64 %B = zext i64 %A to i128
66 %D = trunc i128 %C to i32
69 ; CHECK: %C = lshr i64 %A, 32
70 ; CHECK: %D = trunc i64 %C to i32
74 define i92 @test7(i64 %A) {
75 %B = zext i64 %A to i128
77 %D = trunc i128 %C to i92
80 ; CHECK: %B = zext i64 %A to i92
81 ; CHECK: %C = lshr i92 %B, 32
85 define i64 @test8(i32 %A, i32 %B) {
86 %tmp38 = zext i32 %A to i128
87 %tmp32 = zext i32 %B to i128
88 %tmp33 = shl i128 %tmp32, 32
89 %ins35 = or i128 %tmp33, %tmp38
90 %tmp42 = trunc i128 %ins35 to i64
93 ; CHECK: %tmp38 = zext i32 %A to i64
94 ; CHECK: %tmp32 = zext i32 %B to i64
95 ; CHECK: %tmp33 = shl i64 %tmp32, 32
96 ; CHECK: %ins35 = or i64 %tmp33, %tmp38
97 ; CHECK: ret i64 %ins35