File: read-reg.ll

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (35 lines) | stat: -rw-r--r-- 898 bytes parent folder | download | duplicates (12) 
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
 
; RUN: opt -S -passes=early-cse -earlycse-debug-hash < %s | FileCheck %s
; RUN: opt -S -passes='early-cse<memssa>' < %s | FileCheck %s
target datalayout = "E-m:e-i64:64-n32:64"
target triple = "powerpc64-unknown-linux-gnu"

; Function Attrs: nounwind
define i64 @f(i64 %x) #0 {
entry:
  %0 = call i64 @llvm.read_register.i64(metadata !0)
  call void @foo()
  %1 = call i64 @llvm.read_register.i64(metadata !0)
  %add = add nsw i64 %0, %1
  ret i64 %add
}

; CHECK-LABEL: @f
; CHECK: call i64 @llvm.read_register.i64
; CHECK: call i64 @llvm.read_register.i64

; Function Attrs: nounwind readnone
declare i64 @llvm.read_register.i64(metadata) #1

; Function Attrs: nounwind
declare void @llvm.write_register.i64(metadata, i64) #2

declare void @foo(...)

attributes #0 = { nounwind }
attributes #1 = { nounwind readnone }
attributes #2 = { nounwind }

!llvm.named.register.r1 = !{!0}

!0 = !{!"r1"}