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comparison test/CodeGen/SystemZ/int-cmp-26.ll @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children afa8332a0e37
comparison
equal deleted inserted replaced
-1:000000000000 0:95c75e76d11b
1 ; Test 32-bit equality comparisons that are really between a memory halfword
2 ; and a constant.
3 ;
4 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
5
6 ; Check the low end of the 16-bit unsigned range, with zero extension.
7 define double @f1(double %a, double %b, i16 *%ptr) {
8 ; CHECK-LABEL: f1:
9 ; CHECK: clhhsi 0(%r2), 0
10 ; CHECK-NEXT: je
11 ; CHECK: br %r14
12 %val = load i16 *%ptr
13 %ext = zext i16 %val to i32
14 %cond = icmp eq i32 %ext, 0
15 %res = select i1 %cond, double %a, double %b
16 ret double %res
17 }
18
19 ; Check the high end of the 16-bit unsigned range, with zero extension.
20 define double @f2(double %a, double %b, i16 *%ptr) {
21 ; CHECK-LABEL: f2:
22 ; CHECK: clhhsi 0(%r2), 65535
23 ; CHECK-NEXT: je
24 ; CHECK: br %r14
25 %val = load i16 *%ptr
26 %ext = zext i16 %val to i32
27 %cond = icmp eq i32 %ext, 65535
28 %res = select i1 %cond, double %a, double %b
29 ret double %res
30 }
31
32 ; Check the next value up, with zero extension. The condition is always false.
33 define double @f3(double %a, double %b, i16 *%ptr) {
34 ; CHECK-LABEL: f3:
35 ; CHECK-NOT: clhhsi
36 ; CHECK: br %r14
37 %val = load i16 *%ptr
38 %ext = zext i16 %val to i32
39 %cond = icmp eq i32 %ext, 65536
40 %res = select i1 %cond, double %a, double %b
41 ret double %res
42 }
43
44 ; Check comparisons with -1, with zero extension.
45 ; This condition is also always false.
46 define double @f4(double %a, double %b, i16 *%ptr) {
47 ; CHECK-LABEL: f4:
48 ; CHECK-NOT: clhhsi
49 ; CHECK: br %r14
50 %val = load i16 *%ptr
51 %ext = zext i16 %val to i32
52 %cond = icmp eq i32 %ext, -1
53 %res = select i1 %cond, double %a, double %b
54 ret double %res
55 }
56
57 ; Check comparisons with 0, using sign extension.
58 define double @f5(double %a, double %b, i16 *%ptr) {
59 ; CHECK-LABEL: f5:
60 ; CHECK: clhhsi 0(%r2), 0
61 ; CHECK-NEXT: je
62 ; CHECK: br %r14
63 %val = load i16 *%ptr
64 %ext = sext i16 %val to i32
65 %cond = icmp eq i32 %ext, 0
66 %res = select i1 %cond, double %a, double %b
67 ret double %res
68 }
69
70 ; Check the high end of the signed 16-bit range, using sign extension.
71 define double @f6(double %a, double %b, i16 *%ptr) {
72 ; CHECK-LABEL: f6:
73 ; CHECK: clhhsi 0(%r2), 32767
74 ; CHECK-NEXT: je
75 ; CHECK: br %r14
76 %val = load i16 *%ptr
77 %ext = sext i16 %val to i32
78 %cond = icmp eq i32 %ext, 32767
79 %res = select i1 %cond, double %a, double %b
80 ret double %res
81 }
82
83 ; Check the next value up, using sign extension.
84 ; The condition is always false.
85 define double @f7(double %a, double %b, i16 *%ptr) {
86 ; CHECK-LABEL: f7:
87 ; CHECK-NOT: clhhsi
88 ; CHECK: br %r14
89 %val = load i16 *%ptr
90 %ext = sext i16 %val to i32
91 %cond = icmp eq i32 %ext, 32768
92 %res = select i1 %cond, double %a, double %b
93 ret double %res
94 }
95
96 ; Check comparisons with -1, using sign extension.
97 define double @f8(double %a, double %b, i16 *%ptr) {
98 ; CHECK-LABEL: f8:
99 ; CHECK: clhhsi 0(%r2), 65535
100 ; CHECK-NEXT: je
101 ; CHECK: br %r14
102 %val = load i16 *%ptr
103 %ext = sext i16 %val to i32
104 %cond = icmp eq i32 %ext, -1
105 %res = select i1 %cond, double %a, double %b
106 ret double %res
107 }
108
109 ; Check the low end of the signed 16-bit range, using sign extension.
110 define double @f9(double %a, double %b, i16 *%ptr) {
111 ; CHECK-LABEL: f9:
112 ; CHECK: clhhsi 0(%r2), 32768
113 ; CHECK-NEXT: je
114 ; CHECK: br %r14
115 %val = load i16 *%ptr
116 %ext = sext i16 %val to i32
117 %cond = icmp eq i32 %ext, -32768
118 %res = select i1 %cond, double %a, double %b
119 ret double %res
120 }
121
122 ; Check the next value down, using sign extension.
123 ; The condition is always false.
124 define double @f10(double %a, double %b, i16 *%ptr) {
125 ; CHECK-LABEL: f10:
126 ; CHECK-NOT: clhhsi
127 ; CHECK: br %r14
128 %val = load i16 *%ptr
129 %ext = sext i16 %val to i32
130 %cond = icmp eq i32 %ext, -32769
131 %res = select i1 %cond, double %a, double %b
132 ret double %res
133 }