llvm-project/llvm/test/CodeGen/X86/dynamic-alloca-in-entry.ll

23 lines
522 B
LLVM

; 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: movl %esp, %ebp
; CHECK: movl %esp, %[[sp_tmp:.*]]
; CHECK: addl $-4, %[[sp_tmp]]
; CHECK: movl %[[sp_tmp]], %esp
; CHECK: retl