File: dynamic-alloca-in-entry.ll

package info (click to toggle)
llvm-toolchain-6.0 1%3A6.0.1-10
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 598,080 kB
  • sloc: cpp: 3,046,253; ansic: 595,057; asm: 271,965; python: 128,926; objc: 106,554; sh: 21,906; lisp: 10,191; pascal: 6,094; ml: 5,544; perl: 5,265; makefile: 2,227; cs: 2,027; xml: 686; php: 212; csh: 117
file content (19 lines) | stat: -rw-r--r-- 419 bytes parent folder | download | duplicates (42) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
; RUN: llc < %s -mtriple=i686-pc-win32 | FileCheck %s

; Allocas with unknown size in the entry block are dynamic.
define void @foo(i32 %n) {
  %m = alloca i32, i32 %n
  ret void
}
; CHECK-LABEL: _foo:
; CHECK: calll __chkstk
; CHECK: retl

; Use of inalloca implies that that the alloca is not static.
define void @bar() {
  %m = alloca inalloca i32
  ret void
}
; CHECK-LABEL: _bar:
; CHECK: pushl %eax
; CHECK: retl