File: alloca.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 (33 lines) | stat: -rw-r--r-- 679 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
33
 
; RUN: opt < %s -passes=loop-rotate -verify-memoryssa -S | FileCheck %s

; Test alloca in -loop-rotate.

; We expect a different value for %ptr each iteration (according to the
; definition of alloca). I.e. each @use must be paired with an alloca.

; CHECK: call void @use(ptr %
; CHECK: %ptr = alloca i8

@e = global i16 10

declare void @use(ptr)

define void @test() {
entry:
  %end = load i16, ptr @e
  br label %loop

loop:
  %n.phi = phi i16 [ %n, %loop.fin ], [ 0, %entry ]
  %ptr = alloca i8
  %cond = icmp eq i16 %n.phi, %end
  br i1 %cond, label %exit, label %loop.fin

loop.fin:
  %n = add i16 %n.phi, 1
  call void @use(ptr %ptr)
  br label %loop

exit:
  ret void
}