xref: /llvm-project/llvm/test/CodeGen/RISCV/align-loops.ll (revision 08165c444e11defd42d417fa88a3dede83b230e5)
1; RUN: llc < %s -mtriple=riscv64 | FileCheck %s
2; RUN: llc < %s -mtriple=riscv64 -align-loops=16 | FileCheck %s -check-prefix=ALIGN_16
3; RUN: llc < %s -mtriple=riscv64 -align-loops=32 | FileCheck %s -check-prefix=ALIGN_32
4
5declare void @foo()
6
7define void @test(i32 %n, i32 %m) nounwind {
8; CHECK-LABEL:    test:
9; CHECK-NOT:        .p2align
10; CHECK:            ret
11
12; ALIGN_16-LABEL: test:
13; ALIGN_16:         .p2align 4{{$}}
14; ALIGN_16-NEXT:  .LBB0_1: # %outer
15; ALIGN_16:         .p2align 4{{$}}
16; ALIGN_16-NEXT:  .LBB0_2: # %inner
17
18; ALIGN_32-LABEL: test:
19; ALIGN_32:         .p2align 5{{$}}
20; ALIGN_32-NEXT:  .LBB0_1: # %outer
21; ALIGN_32:         .p2align 5{{$}}
22; ALIGN_32-NEXT:  .LBB0_2: # %inner
23entry:
24  br label %outer
25
26outer:
27  %outer.iv = phi i32 [0, %entry], [%outer.iv.next, %outer_bb]
28  br label %inner
29
30inner:
31  %inner.iv = phi i32 [0, %outer], [%inner.iv.next, %inner]
32  call void @foo()
33  %inner.iv.next = add i32 %inner.iv, 1
34  %inner.cond = icmp ne i32 %inner.iv.next, %m
35  br i1 %inner.cond, label %inner, label %outer_bb
36
37outer_bb:
38  %outer.iv.next = add i32 %outer.iv, 1
39  %outer.cond = icmp ne i32 %outer.iv.next, %n
40  br i1 %outer.cond, label %outer, label %exit
41
42exit:
43  ret void
44}
45