File: jcc-indirect-thunk-kernel.ll

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (32 lines) | stat: -rw-r--r-- 893 bytes parent folder | download | duplicates (14)
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
; RUN: llc < %s -O2 --code-model=kernel | FileCheck %s
; The intent of the test is that we do not generate conditional
; tail calls to the thunk.

target triple = "x86_64-unknown-linux-gnu"

define dso_local void @foo(ptr %something) #0 {
; CHECK-LABEL: foo:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    movq (%rdi), %r11
; CHECK-NEXT:    testq %r11, %r11
; Make sure that a JNE was not generated instead of a JE + JMP sequence
; CHECK-NOT:     jne
; CHECK-NEXT:    je .LBB0_1
; CHECK-NEXT:    bb.2: # %if.then
; CHECK-NEXT:    jmp __x86_indirect_thunk_r11
; CHECK-NEXT:    LBB0_1:
; CHECK-NEXT:    retq
entry:
  %0 = load ptr, ptr %something, align 8
  %tobool.not = icmp eq ptr %0, null
  br i1 %tobool.not, label %if.end, label %if.then

if.then:
  tail call void %0()
  br label %if.end

if.end:
  ret void
}

attributes #0 = { optsize "target-features"="+retpoline-external-thunk" }