1 ; RUN: llc -march=hexagon -hexagon-eif=0 -ifcvt-limit=0 -hexagon-initial-cfg-cleanup=0 < %s | FileCheck %s
2 ; Check that we constant extended instructions only when necessary.
4 define i32 @cext_test1(ptr %a) nounwind {
5 ; CHECK: r{{[0-9]+}} = memw(r{{[0-9]+}}+##8000)
6 ; CHECK: r{{[0-9]+}} = add(r{{[0-9]+}},##300000)
7 ; CHECK-NOT: r{{[0-9]+}} = memw(r{{[0-9]+}}+##4092)
8 ; CHECK-NOT: r{{[0-9]+}} = add(r{{[0-9]+}},##300)
10 %0 = load i32, ptr %a, align 4
11 %tobool = icmp ne i32 %0, 0
12 br i1 %tobool, label %if.then, label %if.end
15 %arrayidx1 = getelementptr inbounds i32, ptr %a, i32 2000
16 %1 = load i32, ptr %arrayidx1, align 4
17 %add = add nsw i32 %1, 300000
21 %arrayidx2 = getelementptr inbounds i32, ptr %a, i32 1023
22 %2 = load i32, ptr %arrayidx2, align 4
23 %add3 = add nsw i32 %2, 300
27 %retval.0 = phi i32 [ %add, %if.then ], [ %add3, %if.end ]
31 define i32 @cext_test2(ptr %a) nounwind {
32 ; CHECK-NOT: r{{[0-9]+}} = memub(r{{[0-9]+}}+##1023)
33 ; CHECK: r{{[0-9]+}} = add(r{{[0-9]+}},##300000)
34 ; CHECK: r{{[0-9]+}} = memub(r{{[0-9]+}}+##1024)
35 ; CHECK-NOT: r{{[0-9]+}} = add(r{{[0-9]+}},##6000)
37 %tobool = icmp ne ptr %a, null
38 br i1 %tobool, label %if.then, label %if.end
41 %arrayidx = getelementptr inbounds i8, ptr %a, i32 1023
42 %0 = load i8, ptr %arrayidx, align 1
43 %conv = zext i8 %0 to i32
44 %add = add nsw i32 %conv, 300000
48 %arrayidx1 = getelementptr inbounds i8, ptr %a, i32 1024
49 %1 = load i8, ptr %arrayidx1, align 1
50 %conv2 = zext i8 %1 to i32
51 %add3 = add nsw i32 %conv2, 6000
55 %retval.0 = phi i32 [ %add, %if.then ], [ %add3, %if.end ]