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
|
# RUN: llc -run-pass ppc-mi-peepholes -ppc-eliminate-signext -ppc-eliminate-zeroext -verify-machineinstrs -o - %s | FileCheck %s
--- |
target datalayout = "E-m:e-i64:64-n32:64"
target triple = "powerpc64le-unknown-linux-gnu"
define ptr @func(ptr %a) {
entry:
ret ptr %a
}
...
---
name: func
alignment: 4
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
tracksRegLiveness: true
liveins:
- { reg: '$x3', virtual-reg: '%0' }
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 0
offsetAdjustment: 0
maxAlignment: 0
adjustsStack: false
hasCalls: false
maxCallFrameSize: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
body: |
bb.0.entry:
liveins: $x3
; CHECK-LABEL: bb.0.entry:
; CHECK: %4:g8rc = EXTSW_32_64 %3
; CHECK: %5:g8rc = INSERT_SUBREG %15, %1, %subreg.sub_32
; CHECK: %7:g8rc = EXTSW_32_64 %6
; CHECK: %9:g8rc = INSERT_SUBREG %16, %8, %subreg.sub_32
; CHECK: %11:g8rc = INSERT_SUBREG %17, %10, %subreg.sub_32
; CHECK: %14:g8rc = COPY %1
%0:g8rc_nox0 = COPY $x3
%1:gprc, %2:g8rc_nox0 = LBZU 0, %0:g8rc_nox0
%3:gprc = COPY %2:g8rc_nox0
%4:g8rc = EXTSW_32_64 %3:gprc ; should not be eliminated
%5:g8rc = EXTSW_32_64 %1:gprc
%6:gprc = ORIS %1:gprc, 32768 ; should not be eliminated
%7:g8rc = EXTSW_32_64 %6:gprc
%8:gprc = ORIS %1:gprc, 32767
%9:g8rc = EXTSW_32_64 %8:gprc
%10:gprc = ORI %1:gprc, 32768
%11:g8rc = EXTSW_32_64 %10:gprc
%12:g8rc = IMPLICIT_DEF
%13:g8rc = INSERT_SUBREG %12:g8rc, %1:gprc, %subreg.sub_32
%14:g8rc = RLDICL %13:g8rc, 0, 32
...
|
