File: fast-isel-fold.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2~deb10u1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 995,836 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (85 lines) | stat: -rw-r--r-- 1,900 bytes parent folder | download | duplicates (21)
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
75
76
77
78
79
80
81
82
83
84
85
; RUN: llc < %s -O0 -verify-machineinstrs -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=armv7-apple-darwin | FileCheck %s --check-prefix=ARM
; RUN: llc < %s -O0 -verify-machineinstrs -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=armv7-linux-gnueabi | FileCheck %s --check-prefix=ARM
; RUN: llc < %s -O0 -verify-machineinstrs -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=thumbv7-apple-darwin | FileCheck %s --check-prefix=THUMB

@a = global i8 1, align 1
@b = global i16 2, align 2

define void @t1() nounwind uwtable ssp {
; ARM: t1
; ARM: ldrb
; ARM-NOT: uxtb
; ARM-NOT: and{{.*}}, #255
; THUMB: t1
; THUMB: ldrb
; THUMB-NOT: uxtb
; THUMB-NOT: and{{.*}}, #255
  %1 = load i8, i8* @a, align 1
  call void @foo1(i8 zeroext %1)
  ret void
}

define void @t2() nounwind uwtable ssp {
; ARM: t2
; ARM: ldrh
; ARM-NOT: uxth
; THUMB: t2
; THUMB: ldrh
; THUMB-NOT: uxth
  %1 = load i16, i16* @b, align 2
  call void @foo2(i16 zeroext %1)
  ret void
}

declare void @foo1(i8 zeroext)
declare void @foo2(i16 zeroext)

define i32 @t3() nounwind uwtable ssp {
; ARM: t3
; ARM: ldrb
; ARM-NOT: uxtb
; ARM-NOT: and{{.*}}, #255
; THUMB: t3
; THUMB: ldrb
; THUMB-NOT: uxtb
; THUMB-NOT: and{{.*}}, #255
  %1 = load i8, i8* @a, align 1
  %2 = zext i8 %1 to i32
  ret i32 %2
}

define i32 @t4() nounwind uwtable ssp {
; ARM: t4
; ARM: ldrh
; ARM-NOT: uxth
; THUMB: t4
; THUMB: ldrh
; THUMB-NOT: uxth
  %1 = load i16, i16* @b, align 2
  %2 = zext i16 %1 to i32
  ret i32 %2
}

define i32 @t5() nounwind uwtable ssp {
; ARM: t5
; ARM: ldrsh
; ARM-NOT: sxth
; THUMB: t5
; THUMB: ldrsh
; THUMB-NOT: sxth
  %1 = load i16, i16* @b, align 2
  %2 = sext i16 %1 to i32
  ret i32 %2
}

define i32 @t6() nounwind uwtable ssp {
; ARM: t6
; ARM: ldrsb
; ARM-NOT: sxtb
; THUMB: t6
; THUMB: ldrsb
; THUMB-NOT: sxtb
  %1 = load i8, i8* @a, align 2
  %2 = sext i8 %1 to i32
  ret i32 %2
}