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)
14 ; CHECK-LABEL: @test1(
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)
25 ; CHECK-LABEL: @test2(
26 ; CHECK: shl i64 %a, 36
27 ; CHECK: %d = ashr exact 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)
36 ; CHECK-LABEL: @test3(
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)
47 ; CHECK-LABEL: @test4(
48 ; CHECK: = and i64 %a, 8
49 ; CHECK: = xor i64 {{.*}}, 8
54 define i32 @test5(i32 %A) {
55 %B = zext i32 %A to i128
57 %D = trunc i128 %C to i32
59 ; CHECK-LABEL: @test5(
60 ; CHECK: %C = lshr i32 %A, 16
64 define i32 @test6(i64 %A) {
65 %B = zext i64 %A to i128
67 %D = trunc i128 %C to i32
69 ; CHECK-LABEL: @test6(
70 ; CHECK: %C = lshr i64 %A, 32
71 ; CHECK: %D = trunc i64 %C to i32
75 define i92 @test7(i64 %A) {
76 %B = zext i64 %A to i128
78 %D = trunc i128 %C to i92
80 ; CHECK-LABEL: @test7(
81 ; CHECK: %B = zext i64 %A to i92
82 ; CHECK: %C = lshr i92 %B, 32
86 define i64 @test8(i32 %A, i32 %B) {
87 %tmp38 = zext i32 %A to i128
88 %tmp32 = zext i32 %B to i128
89 %tmp33 = shl i128 %tmp32, 32
90 %ins35 = or i128 %tmp33, %tmp38
91 %tmp42 = trunc i128 %ins35 to i64
93 ; CHECK-LABEL: @test8(
94 ; CHECK: %tmp38 = zext i32 %A to i64
95 ; CHECK: %tmp32 = zext i32 %B to i64
96 ; CHECK: %tmp33 = shl nuw i64 %tmp32, 32
97 ; CHECK: %ins35 = or i64 %tmp33, %tmp38
98 ; CHECK: ret i64 %ins35
101 define i8 @test9(i32 %X) {
103 %Z = trunc i32 %Y to i8
105 ; CHECK-LABEL: @test9(
112 define i8 @test10(i32 %X) {
113 %Y = trunc i32 %X to i8
116 ; CHECK-LABEL: @test10(