1 ; RUN: opt < %s -ipsccp -S | FileCheck %s
3 ; Constant range for %a is [1, 48) and for %b is [301, 1000)
6 define internal i32 @f1(i32 %a, i32 %b) {
8 %cmp.a = icmp sgt i32 %a, 300
9 %cmp.b = icmp sgt i32 %b, 300
10 %cmp.a2 = icmp ugt i32 %a, 300
11 %cmp.b2 = icmp ugt i32 %b, 300
13 %a.1 = select i1 %cmp.a, i32 1, i32 2
14 %b.1 = select i1 %cmp.b, i32 1, i32 2
15 %a.2 = select i1 %cmp.a2, i32 1, i32 2
16 %b.2 = select i1 %cmp.b2, i32 1, i32 2
17 %res1 = add i32 %a.1, %b.1
18 %res2 = add i32 %a.2, %b.2
19 %res3 = add i32 %res1, %res2
23 ; Constant range for %x is [47, 302)
25 ; CHECK: %cmp = icmp sgt i32 %x, 300
26 ; CHECK: %res1 = select i1 %cmp, i32 1, i32 2
27 ; CHECK-NEXT: %res4 = select i1 %cmp4, i32 3, i32 4
28 ; CHECK-NEXT: %res6 = add i32 %res1, 3
29 ; CHECK-NEXT: %res7 = add i32 5, %res4
30 ; CHECK-NEXT: %res = add i32 %res6, 5
31 ; CHECK-NEXT: ret i32 %res
32 define internal i32 @f2(i32 %x) {
34 %cmp = icmp sgt i32 %x, 300
35 %cmp2 = icmp ne i32 %x, 10
36 %cmp3 = icmp sge i32 %x, 47
37 %cmp4 = icmp ugt i32 %x, 300
38 %cmp5 = icmp uge i32 %x, 47
39 %res1 = select i1 %cmp, i32 1, i32 2
40 %res2 = select i1 %cmp2, i32 3, i32 4
41 %res3 = select i1 %cmp3, i32 5, i32 6
42 %res4 = select i1 %cmp4, i32 3, i32 4
43 %res5 = select i1 %cmp5, i32 5, i32 6
45 %res6 = add i32 %res1, %res2
46 %res7 = add i32 %res3, %res4
47 %res = add i32 %res6, %res5
51 define i32 @caller1() {
53 %call1 = tail call i32 @f1(i32 1, i32 301)
54 %call2 = tail call i32 @f1(i32 47, i32 999)
55 %call3 = tail call i32 @f2(i32 47)
56 %call4 = tail call i32 @f2(i32 301)
57 %res.1 = add nsw i32 12, %call3
58 %res.2 = add nsw i32 %res.1, %call4
62 ; x is overdefined, because constant ranges are only used for parameter
65 ; CHECK: %cmp = icmp sgt i32 %x, 300
66 ; CHECK: %res = select i1 %cmp, i32 1, i32 2
68 define internal i32 @f3(i32 %x) {
70 %cmp = icmp sgt i32 %x, 300
71 %res = select i1 %cmp, i32 1, i32 2
75 ; The phi node could be converted in a ConstantRange.
76 define i32 @caller2(i1 %cmp) {
78 br i1 %cmp, label %if.true, label %end
84 %res = phi i32 [ 0, %entry], [ 1, %if.true ]
85 %call1 = tail call i32 @f3(i32 %res)
90 ; CHECK: %cmp = icmp sgt i32 %x, 300
91 ; CHECK: %res = select i1 %cmp, i32 1, i32 2
93 define internal i32 @f4(i32 %x) {
95 %cmp = icmp sgt i32 %x, 300
96 %res = select i1 %cmp, i32 1, i32 2
100 ; ICmp could introduce bounds on ConstantRanges.
101 define i32 @caller3(i32 %x) {
103 %cmp = icmp sgt i32 %x, 300
104 br i1 %cmp, label %if.true, label %end
107 %x.1 = tail call i32 @f4(i32 %x)
111 %res = phi i32 [ 0, %entry], [ %x.1, %if.true ]
115 ; Check to make sure we do not attempt to access lattice values in unreachable
117 define i32 @test_unreachable() {
119 call i1 @test_unreachable_callee(i32 1)
120 call i1 @test_unreachable_callee(i32 2)
124 define internal i1 @test_unreachable_callee(i32 %a) {
129 %cmp = icmp eq i32 undef, %a
133 ; Check that we do not attempt to get range info for non-integer types and
135 define double @test_struct({ double, double } %test) {
136 %v = extractvalue { double, double } %test, 0
137 %r = fmul double %v, %v
141 ; Constant range for %x is [47, 302)
144 ; CHECK-NEXT: %cmp = icmp sgt i32 %x, undef
145 ; CHECK-NEXT: %res1 = select i1 %cmp, i32 1, i32 2
146 ; CHECK-NEXT: %res = add i32 %res1, 3
147 ; CHECK-NEXT: ret i32 %res
148 define internal i32 @f5(i32 %x) {
150 %cmp = icmp sgt i32 %x, undef
151 %cmp2 = icmp ne i32 undef, %x
152 %res1 = select i1 %cmp, i32 1, i32 2
153 %res2 = select i1 %cmp2, i32 3, i32 4
155 %res = add i32 %res1, %res2
159 define i32 @caller4() {
161 %call1 = tail call i32 @f5(i32 47)
162 %call2 = tail call i32 @f5(i32 301)
163 %res = add nsw i32 %call1, %call2
167 ; Make sure we do re-evaluate the function after ParamState changes.
168 ; CHECK-LABEL: @recursive_f
169 ; CHECK-LABEL: entry:
170 ; CHECK: %cmp = icmp eq i32 %i, 0
171 ; CHECK-NEXT: br i1 %cmp, label %if.then, label %if.else
172 define internal i32 @recursive_f(i32 %i) {
174 %cmp = icmp eq i32 %i, 0
175 br i1 %cmp, label %if.then, label %if.else
177 if.then: ; preds = %entry
180 if.else: ; preds = %entry
181 %sub = sub nsw i32 %i, 1
182 %call = call i32 @recursive_f(i32 %sub)
183 %add = add i32 %i, %call
186 return: ; preds = %if.else, %if.then
187 %retval.0 = phi i32 [ 0, %if.then ], [ %add, %if.else ]
191 ; CHECK-LABEL: @caller5
192 ; CHECK: %call = call i32 @recursive_f(i32 42)
193 ; CHECK-NEXT: ret i32 %call
194 define i32 @caller5() {
196 %call = call i32 @recursive_f(i32 42)