File: allocate-r0.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (18 lines) | stat: -rw-r--r-- 651 bytes parent folder | download | duplicates (30) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=g5 | FileCheck %s
target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
target triple = "powerpc64-unknown-linux-gnu"

define i64 @foo(i64 %a) nounwind {
entry:
  call void asm sideeffect "", "~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12}"() nounwind
  br label %return

; CHECK: @foo
; Because r0 is allocatable, we can use it to hold r3 without spilling.
; CHECK: mr 0, 3
; CHECK: mr 3, 0

return:                                           ; preds = %entry
  ret i64 %a
}