xref: /llvm-project/llvm/test/CodeGen/Hexagon/asr-rnd.ll (revision 2208c97c1bec2512d4e47b6223db6d95a7037956)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
2; RUN: llc -mtriple=hexagon < %s | FileCheck %s
3;
4; Check if we generate rounding-asr instruction.  It is equivalent to
5; Rd = ((Rs >> #u) +1) >> 1.
6target triple = "hexagon"
7
8; Function Attrs: nounwind
9define i32 @f0(i32 %a0) #0 {
10; CHECK-LABEL: f0:
11; CHECK:       // %bb.0: // %b0
12; CHECK-NEXT:    {
13; CHECK-NEXT:     r0 = asr(r0,#10):rnd
14; CHECK-NEXT:     r1 = r0
15; CHECK-NEXT:     r29 = add(r29,#-8)
16; CHECK-NEXT:    }
17; CHECK-NEXT:    {
18; CHECK-NEXT:     r29 = add(r29,#8)
19; CHECK-NEXT:     jumpr r31
20; CHECK-NEXT:     memw(r29+#4) = r1
21; CHECK-NEXT:    }
22b0:
23  %v0 = alloca i32, align 4
24  store i32 %a0, ptr %v0, align 4
25  %v1 = load i32, ptr %v0, align 4
26  %v2 = ashr i32 %v1, 10
27  %v3 = add nsw i32 %v2, 1
28  %v4 = ashr i32 %v3, 1
29  ret i32 %v4
30}
31
32; Function Attrs: nounwind
33define i64 @f1(i64 %a0) #0 {
34; CHECK-LABEL: f1:
35; CHECK:       // %bb.0: // %b0
36; CHECK-NEXT:    {
37; CHECK-NEXT:     r1:0 = asr(r1:0,#17):rnd
38; CHECK-NEXT:     r3:2 = combine(r1,r0)
39; CHECK-NEXT:     r29 = add(r29,#-8)
40; CHECK-NEXT:    }
41; CHECK-NEXT:    {
42; CHECK-NEXT:     r29 = add(r29,#8)
43; CHECK-NEXT:     jumpr r31
44; CHECK-NEXT:     memd(r29+#0) = r3:2
45; CHECK-NEXT:    }
46b0:
47  %v0 = alloca i64, align 8
48  store i64 %a0, ptr %v0, align 8
49  %v1 = load i64, ptr %v0, align 8
50  %v2 = ashr i64 %v1, 17
51  %v3 = add nsw i64 %v2, 1
52  %v4 = ashr i64 %v3, 1
53  ret i64 %v4
54}
55
56attributes #0 = { nounwind }
57