File: arm64-fast-isel-addr-offset.ll

package info (click to toggle)
llvm-toolchain-3.9 1%3A3.9.1-8
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 441,060 kB
  • ctags: 428,777
  • sloc: cpp: 2,546,577; ansic: 538,318; asm: 119,677; objc: 103,316; python: 102,148; sh: 27,847; pascal: 5,626; ml: 5,510; perl: 5,293; lisp: 4,801; makefile: 2,177; xml: 686; cs: 362; php: 212; csh: 117
file content (47 lines) | stat: -rw-r--r-- 1,615 bytes parent folder | download | duplicates (3)
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
; RUN: llc -O0 -fast-isel-abort=1 -verify-machineinstrs -mtriple=arm64-apple-darwin < %s | FileCheck %s

@sortlist = common global [5001 x i32] zeroinitializer, align 16
@sortlist2 = common global [5001 x i64] zeroinitializer, align 16

; Load an address with an offset larget then LDR imm can handle
define i32 @foo() nounwind {
entry:
; CHECK-LABEL: @foo
; CHECK: adrp x[[REG:[0-9]+]], _sortlist@GOTPAGE
; CHECK: ldr x[[REG1:[0-9]+]], [x[[REG]], _sortlist@GOTPAGEOFF]
; CHECK: mov x[[REG2:[0-9]+]], #20000
; CHECK: add x[[REG3:[0-9]+]], x[[REG1]], x[[REG2]]
; CHECK: ldr w0, [x[[REG3]]]
; CHECK: ret
  %0 = load i32, i32* getelementptr inbounds ([5001 x i32], [5001 x i32]* @sortlist, i32 0, i64 5000), align 4
  ret i32 %0
}

define i64 @foo2() nounwind {
entry:
; CHECK-LABEL: @foo2
; CHECK: adrp x[[REG:[0-9]+]], _sortlist2@GOTPAGE
; CHECK: ldr x[[REG1:[0-9]+]], [x[[REG]], _sortlist2@GOTPAGEOFF]
; CHECK: mov x[[REG2:[0-9]+]], #40000
; CHECK: add x[[REG3:[0-9]+]], x[[REG1]], x[[REG2]]
; CHECK: ldr x0, [x[[REG3]]]
; CHECK: ret
  %0 = load i64, i64* getelementptr inbounds ([5001 x i64], [5001 x i64]* @sortlist2, i32 0, i64 5000), align 4
  ret i64 %0
}

; Load an address with a ridiculously large offset.
; rdar://12505553
@pd2 = common global i8* null, align 8

define signext i8 @foo3() nounwind ssp {
entry:
; CHECK-LABEL: @foo3
; CHECK: mov x[[REG:[0-9]+]], #12343736008704
; CHECK: movk x[[REG]], #29646, lsl #16
; CHECK: movk x[[REG]], #12274
  %0 = load i8*, i8** @pd2, align 8
  %arrayidx = getelementptr inbounds i8, i8* %0, i64 12345678901234
  %1 = load i8, i8* %arrayidx, align 1
  ret i8 %1
}