File: wineh-save-lrpair1.mir

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (74 lines) | stat: -rw-r--r-- 2,015 bytes parent folder | download | duplicates (19)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
# RUN: llc -o - %s -mtriple=aarch64-windows -start-before=prologepilog \
# RUN:   -stop-after=prologepilog | FileCheck %s
# RUN: llc -o - %s -mtriple=aarch64-windows -start-before=prologepilog \
# RUN:   | FileCheck --check-prefix=ASM %s

# Check that an odd callee-saved GPR is paired with lr

# CHECK: early-clobber $sp = frame-setup STPXpre killed $x19, killed $x20, $sp, -4
# CHECK-NEXT: frame-setup SEH_SaveRegP_X 19, 20, -32
# CHECK-NEXT: frame-setup STPXi killed $x21, killed $lr, $sp, 2
# CHECK-NEXT: frame-setup SEH_SaveRegP 21, 30, 16
# CHECK-NEXT: frame-setup SEH_PrologEnd

# ASM:      stp x19, x20, [sp, #-32]!
# ASM-NEXT: .seh_save_regp_x x19, 32
# ASM-NEXT: stp x21, x30, [sp, #16]
# ASM-NEXT: .seh_save_lrpair x21, 16
# ASM-NEXT: .seh_endprologue

--- |

  define dso_local i32 @func(i32 %a) { ret i32 %a }
  declare dso_local i32 @other()

...
---
name:            func
alignment:       4
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
hasWinCFI:       false
registers:       []
liveins:         []
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    4
  adjustsStack:    false
  hasCalls:        false
  stackProtector:  ''
  maxCallFrameSize: 0
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  localFrameSize:  4
  savePoint:       ''
  restorePoint:    ''
fixedStack:      []
stack:           []
callSites:       []
constants:       []
machineFunctionInfo: {}
body:             |
  bb.0:
    liveins: $x0, $x21, $x19, $x20

    BL @other, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $w0, implicit-def $sp, implicit-def $w0
    $x19 = ADDXrr $x0, $x0
    $x20 = ADDXrr $x19, $x0
    $x21 = ADDXrr $x20, killed $x19
    $x0 = ADDXrr $x0, killed $x21

    RET_ReallyLR

...