File: fast-isel-switch-phi.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (25 lines) | stat: -rw-r--r-- 553 bytes parent folder | download | duplicates (35) 
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
 
; RUN: llc -mtriple=aarch64-apple-darwin -fast-isel -verify-machineinstrs < %s

; Test that the Machine Instruction PHI node doesn't have more than one operand
; from the same predecessor.
define i32 @foo(i32 %a, i32 %b, i1 %c) {
entry:
  br i1 %c, label %switch, label %direct

switch:
  switch i32 %a, label %exit [
    i32 43, label %continue
    i32 45, label %continue
  ]

direct:
  %var = add i32 %b, 1
  br label %continue

continue:
  %var.phi = phi i32 [ %var, %direct ], [ 0, %switch ], [ 0, %switch ]
  ret i32 %var.phi

exit:
  ret i32 1
}