1 ; Test LOCFHR and LOCHHI.
2 ; See comments in asm-18.ll about testing high-word operations.
4 ; RUN: llc < %s -verify-machineinstrs -mtriple=s390x-linux-gnu -mcpu=z13 \
5 ; RUN: -no-integrated-as | FileCheck %s
7 ; Run the test again to make sure it still works the same even
8 ; in the presence of the select instructions.
9 ; RUN: llc < %s -verify-machineinstrs -mtriple=s390x-linux-gnu -mcpu=z15 \
10 ; RUN: -no-integrated-as | FileCheck %s
12 define void @f1(i32 %limit) {
14 ; CHECK-DAG: stepa [[REG1:%r[0-5]]]
15 ; CHECK-DAG: stepb [[REG2:%r[0-5]]]
16 ; CHECK-DAG: clfi %r2, 42
17 ; CHECK: locfhrhe [[REG1]], [[REG2]]
18 ; CHECK: stepc [[REG1]]
20 %a = call i32 asm sideeffect "stepa $0", "=h"()
21 %b = call i32 asm sideeffect "stepb $0", "=h"()
22 %cond = icmp ult i32 %limit, 42
23 %res = select i1 %cond, i32 %a, i32 %b
24 call void asm sideeffect "stepc $0", "h"(i32 %res)
25 call void asm sideeffect "use $0", "h"(i32 %b)
29 define void @f2(i32 %limit) {
31 ; CHECK-DAG: stepa [[REG1:%r[0-5]]]
32 ; CHECK-DAG: stepb [[REG2:%r[0-5]]]
33 ; CHECK-DAG: clijl %r2, 42, [[LABEL:.LBB[0-9_]+]]
34 ; CHECK: risbhg [[REG1]], [[REG2]], 0, 159, 32
36 ; CHECK: stepc [[REG1]]
38 %dummy = call i32 asm sideeffect "dummy $0", "=h"()
39 %a = call i32 asm sideeffect "stepa $0", "=h"()
40 %b = call i32 asm sideeffect "stepb $0", "=r"()
41 %cond = icmp ult i32 %limit, 42
42 %res = select i1 %cond, i32 %a, i32 %b
43 call void asm sideeffect "stepc $0", "h"(i32 %res)
44 call void asm sideeffect "dummy $0", "h"(i32 %dummy)
45 call void asm sideeffect "use $0", "r"(i32 %b)
49 define void @f3(i32 %limit) {
51 ; CHECK-DAG: stepa [[REG1:%r[0-5]]]
52 ; CHECK-DAG: stepb [[REG2:%r[0-5]]]
53 ; CHECK-DAG: clijhe %r2, 42, [[LABEL:.LBB[0-9_]+]]
54 ; CHECK: risbhg [[REG2]], [[REG1]], 0, 159, 32
56 ; CHECK: stepc [[REG2]]
58 %dummy = call i32 asm sideeffect "dummy $0", "=h"()
59 %a = call i32 asm sideeffect "stepa $0", "=r"()
60 %b = call i32 asm sideeffect "stepb $0", "=h"()
61 %cond = icmp ult i32 %limit, 42
62 %res = select i1 %cond, i32 %a, i32 %b
63 call void asm sideeffect "stepc $0", "h"(i32 %res)
64 call void asm sideeffect "dummy $0", "h"(i32 %dummy)
65 call void asm sideeffect "use $0", "r"(i32 %a)
69 define void @f4(i32 %limit) {
71 ; CHECK-DAG: stepa [[REG1:%r[0-5]]]
72 ; CHECK-DAG: stepb [[REG2:%r[0-5]]]
73 ; CHECK-DAG: clijl %r2, 42, [[LABEL:.LBB[0-9_]+]]
74 ; CHECK: risblg [[REG1]], [[REG2]], 0, 159, 32
76 ; CHECK: stepc [[REG1]]
78 %dummy = call i32 asm sideeffect "dummy $0", "=h"()
79 %a = call i32 asm sideeffect "stepa $0", "=r"()
80 %b = call i32 asm sideeffect "stepb $0", "=h"()
81 %cond = icmp ult i32 %limit, 42
82 %res = select i1 %cond, i32 %a, i32 %b
83 call void asm sideeffect "stepc $0", "r"(i32 %res)
84 call void asm sideeffect "dummy $0", "h"(i32 %dummy)
85 call void asm sideeffect "use $0", "h"(i32 %b)
89 define void @f5(i32 %limit) {
91 ; CHECK-DAG: stepa [[REG2:%r[0-5]]]
92 ; CHECK-DAG: stepb [[REG1:%r[0-5]]]
93 ; CHECK-DAG: clijhe %r2, 42, [[LABEL:.LBB[0-9_]+]]
94 ; CHECK: risblg [[REG1]], [[REG2]], 0, 159, 32
96 ; CHECK: stepc [[REG1]]
98 %dummy = call i32 asm sideeffect "dummy $0", "=h"()
99 %a = call i32 asm sideeffect "stepa $0", "=h"()
100 %b = call i32 asm sideeffect "stepb $0", "=r"()
101 %cond = icmp ult i32 %limit, 42
102 %res = select i1 %cond, i32 %a, i32 %b
103 call void asm sideeffect "stepc $0", "r"(i32 %res)
104 call void asm sideeffect "dummy $0", "h"(i32 %dummy)
108 ; Check that we also get LOCFHR as a result of early if-conversion.
109 define void @f6(i32 %limit) {
111 ; CHECK-DAG: stepa [[REG1:%r[0-5]]]
112 ; CHECK-DAG: stepb [[REG2:%r[0-5]]]
113 ; CHECK-DAG: clfi %r2, 41
114 ; CHECK: locfhrh [[REG1]], [[REG2]]
115 ; CHECK: stepc [[REG1]]
118 %a = call i32 asm sideeffect "stepa $0", "=h"()
119 %b = call i32 asm sideeffect "stepb $0", "=h"()
120 %cond = icmp ult i32 %limit, 42
121 br i1 %cond, label %if.then, label %return
127 %res = phi i32 [ %a, %if.then ], [ %b, %entry ]
128 call void asm sideeffect "stepc $0", "h"(i32 %res)
129 call void asm sideeffect "use $0", "h"(i32 %b)
133 ; Check that inverting the condition works as well.
134 define void @f7(i32 %limit) {
136 ; CHECK-DAG: stepa [[REG1:%r[0-5]]]
137 ; CHECK-DAG: stepb [[REG2:%r[0-5]]]
138 ; CHECK-DAG: clfi %r2, 41
139 ; CHECK: locfhrle [[REG1]], [[REG2]]
140 ; CHECK: stepc [[REG1]]
143 %a = call i32 asm sideeffect "stepa $0", "=h"()
144 %b = call i32 asm sideeffect "stepb $0", "=h"()
145 %cond = icmp ult i32 %limit, 42
146 br i1 %cond, label %if.then, label %return
152 %res = phi i32 [ %b, %if.then ], [ %a, %entry ]
153 call void asm sideeffect "stepc $0", "h"(i32 %res)
154 call void asm sideeffect "use $0", "h"(i32 %b)
158 define void @f8(i32 %limit) {
160 ; CHECK: clfi %r2, 42
161 ; CHECK: lochhil [[REG:%r[0-5]]], 32767
162 ; CHECK: stepa [[REG]]
164 %cond = icmp ult i32 %limit, 42
165 %res = select i1 %cond, i32 32767, i32 0
166 call void asm sideeffect "stepa $0", "h"(i32 %res)
170 define void @f9(i32 %limit) {
172 ; CHECK: clfi %r2, 42
173 ; CHECK: lochhil [[REG:%r[0-5]]], -32768
174 ; CHECK: stepa [[REG]]
176 %cond = icmp ult i32 %limit, 42
177 %res = select i1 %cond, i32 -32768, i32 0
178 call void asm sideeffect "stepa $0", "h"(i32 %res)
182 ; Check that we also get LOCHHI as a result of early if-conversion.
183 define void @f10(i32 %limit) {
185 ; CHECK-DAG: stepa [[REG:%r[0-5]]]
186 ; CHECK-DAG: clfi %r2, 41
187 ; CHECK: lochhile [[REG]], 123
188 ; CHECK: stepb [[REG]]
191 %a = call i32 asm sideeffect "stepa $0", "=h"()
192 %cond = icmp ult i32 %limit, 42
193 br i1 %cond, label %if.then, label %return
199 %res = phi i32 [ 123, %if.then ], [ %a, %entry ]
200 call void asm sideeffect "stepb $0", "h"(i32 %res)
204 ; Check that inverting the condition works as well.
205 define void @f11(i32 %limit) {
207 ; CHECK-DAG: stepa [[REG:%r[0-5]]]
208 ; CHECK-DAG: clfi %r2, 41
209 ; CHECK: lochhih [[REG]], 123
210 ; CHECK: stepb [[REG]]
213 %a = call i32 asm sideeffect "stepa $0", "=h"()
214 %cond = icmp ult i32 %limit, 42
215 br i1 %cond, label %if.then, label %return
221 %res = phi i32 [ %a, %if.then ], [ 123, %entry ]
222 call void asm sideeffect "stepb $0", "h"(i32 %res)