File: switch-default-only.ll

package info (click to toggle)
llvm-toolchain-4.0 1%3A4.0.1-10~deb9u2
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 493,332 kB
  • sloc: cpp: 2,698,100; ansic: 552,773; asm: 128,821; python: 121,589; objc: 105,054; sh: 21,174; lisp: 6,758; ml: 5,532; perl: 5,311; pascal: 5,245; makefile: 2,083; cs: 1,868; xml: 686; php: 212; csh: 117
file content (14 lines) | stat: -rw-r--r-- 315 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
 
; RUN: llc -O0 -fast-isel=false -march=x86 < %s | FileCheck %s

; No need for branching when the default and only destination follows
; immediately after the switch.
; CHECK-LABEL: no_branch:
; CHECK-NOT: jmp
; CHECK: ret

define void @no_branch(i32 %x) {
entry:
  switch i32 %x, label %exit [ ]
exit:
  ret void
}