File: ppc64-stackmap-nops.ll

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm-proposed-updates
  • size: 1,998,492 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 (24 lines) | stat: -rw-r--r-- 680 bytes parent folder | download | duplicates (24) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-gnu-linux | FileCheck %s

define void @test_shadow_optimization() {
entry:
; Expect 12 bytes worth of nops here rather than 32: With the shadow optimization
; in place, 20 bytes will be consumed by the frame teardown and return instr.
; CHECK-LABEL: test_shadow_optimization:

; CHECK:      nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NOT:  nop
; CHECK: addi 1, 1, 64
; CHECK: ld [[REG1:[0-9]+]], 16(1)
; CHECK: ld 31, -8(1)
; CHECK: mtlr [[REG1]]
; CHECK: blr

  tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64  0, i32  32)
  ret void
}

declare void @llvm.experimental.stackmap(i64, i32, ...)