xref: /llvm-project/llvm/test/CodeGen/PowerPC/save-bp.ll (revision 502a77f125f43ffde57af34d3fd1b900248a91cd)
1; RUN: llc -mtriple=ppc64-- -ppc-always-use-base-pointer < %s | FileCheck %s --check-prefix CHECK --check-prefix PPC64
2; RUN: llc -ppc-always-use-base-pointer -relocation-model=static < %s | FileCheck %s --check-prefix CHECK --check-prefix PPC32
3; RUN: llc -ppc-always-use-base-pointer -relocation-model=pic < %s | FileCheck %s --check-prefix CHECK --check-prefix PPC32PIC
4
5; CHECK-LABEL: fred:
6
7; Check for saving/restoring frame pointer (X31) and base pointer (X30)
8; on ppc64:
9; PPC64: std 31, -8(1)
10; PPC64: std 30, -16(1)
11; PPC64: ld 31, -8(1)
12; PPC64: ld 30, -16(1)
13
14; Check for saving/restoring frame pointer (R31) and base pointer (R30)
15; on ppc32:
16; PPC32: stwux 1, 1, 0
17; PPC32; addic 0, 0, -4
18; PPC32: stwx 31, 0, 0
19; PPC32: addic 0, 0, -4
20; PPC32: stwx 30, 0, 0
21; The restore sequence:
22; PPC32: lwz 31, 0(1)
23; PPC32: addic 30, 0, 8
24; PPC32: lwz 0, -4(31)
25; PPC32: lwz 30, -8(31)
26; PPC32: mr 1, 31
27; PPC32: mr 31, 0
28
29; Check for saving/restoring frame pointer (R31) and base pointer (R29)
30; on ppc32/pic. This is mostly the same as without pic, except that base
31; pointer is in R29.
32; PPC32PIC: stwux 1, 1, 0
33; PPC32PIC; addic 0, 0, -4
34; PPC32PIC: stwx 31, 0, 0
35; PPC32PIC: addic 0, 0, -8
36; PPC32PIC: stwx 29, 0, 0
37; The restore sequence:
38; PPC32PIC: lwz 31, 0(1)
39; PPC32PIC: addic 29, 0, 12
40; PPC32PIC: lwz 0, -4(31)
41; PPC32PIC: lwz 29, -12(31)
42; PPC32PIC: mr 1, 31
43; PPC32PIC: mr 31, 0
44
45
46target datalayout = "E-m:e-p:32:32-i64:64-n32"
47target triple = "powerpc-unknown-freebsd"
48
49define i64 @fred() local_unnamed_addr #0 {
50entry:
51  ret i64 0
52}
53
54attributes #0 = { norecurse readnone nounwind sspstrong "frame-pointer"="all" "target-cpu"="ppc" }
55