xref: /llvm-project/llvm/test/CodeGen/AArch64/pr48188.ll (revision d9279843b1bafcfb1f540d3093b86023025b6717)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc -O0 -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s --check-prefix=GISEL
3; RUN: llc -O0 -global-isel=0 -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s --check-prefix=SDAG
4
5; Verify that GISel and SDAG do the same thing for this phi (modulo regalloc)
6define void @test() nounwind {
7; GISEL-LABEL: test:
8; GISEL:       // %bb.0: // %entry
9; GISEL-NEXT:    sub sp, sp, #16
10; GISEL-NEXT:    mov x8, xzr
11; GISEL-NEXT:    mov x9, x8
12; GISEL-NEXT:    str x9, [sp] // 8-byte Folded Spill
13; GISEL-NEXT:    str x8, [sp, #8] // 8-byte Folded Spill
14; GISEL-NEXT:    b .LBB0_1
15; GISEL-NEXT:  .LBB0_1: // %loop
16; GISEL-NEXT:    // =>This Inner Loop Header: Depth=1
17; GISEL-NEXT:    ldr x8, [sp, #8] // 8-byte Folded Reload
18; GISEL-NEXT:    ldr x9, [sp] // 8-byte Folded Reload
19; GISEL-NEXT:    str x9, [sp] // 8-byte Folded Spill
20; GISEL-NEXT:    str x8, [sp, #8] // 8-byte Folded Spill
21; GISEL-NEXT:    b .LBB0_1
22;
23; SDAG-LABEL: test:
24; SDAG:       // %bb.0: // %entry
25; SDAG-NEXT:    sub sp, sp, #16
26; SDAG-NEXT:    mov x1, xzr
27; SDAG-NEXT:    mov x0, x1
28; SDAG-NEXT:    str x1, [sp] // 8-byte Folded Spill
29; SDAG-NEXT:    str x0, [sp, #8] // 8-byte Folded Spill
30; SDAG-NEXT:    b .LBB0_1
31; SDAG-NEXT:  .LBB0_1: // %loop
32; SDAG-NEXT:    // =>This Inner Loop Header: Depth=1
33; SDAG-NEXT:    ldr x0, [sp, #8] // 8-byte Folded Reload
34; SDAG-NEXT:    ldr x1, [sp] // 8-byte Folded Reload
35; SDAG-NEXT:    str x1, [sp] // 8-byte Folded Spill
36; SDAG-NEXT:    str x0, [sp, #8] // 8-byte Folded Spill
37; SDAG-NEXT:    b .LBB0_1
38entry:
39  br label %loop
40
41loop:
42  %p = phi i72 [ 0, %entry ], [ %p, %loop ]
43  br label %loop
44}
45