39 lines
1.3 KiB
LLVM
39 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
|
|
; RUN: llc -global-isel=1 -mtriple=x86_64-linux-gnu -o - %s | FileCheck %s
|
|
|
|
declare void @use_addr(ptr)
|
|
declare ptr @llvm.stacksave.p0()
|
|
declare void @llvm.stackrestore.p0(ptr)
|
|
|
|
define void @test_scoped_alloca(i64 %n) {
|
|
; CHECK-LABEL: test_scoped_alloca:
|
|
; CHECK: # %bb.0:
|
|
; CHECK-NEXT: pushq %rbp
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 16
|
|
; CHECK-NEXT: .cfi_offset %rbp, -16
|
|
; CHECK-NEXT: movq %rsp, %rbp
|
|
; CHECK-NEXT: .cfi_def_cfa_register %rbp
|
|
; CHECK-NEXT: pushq %rbx
|
|
; CHECK-NEXT: pushq %rax
|
|
; CHECK-NEXT: .cfi_offset %rbx, -24
|
|
; CHECK-NEXT: movq %rsp, %rbx
|
|
; CHECK-NEXT: movq %rsp, %rax
|
|
; CHECK-NEXT: imulq $1, %rdi, %rcx
|
|
; CHECK-NEXT: addq $15, %rcx
|
|
; CHECK-NEXT: andq $-16, %rcx
|
|
; CHECK-NEXT: subq %rcx, %rax
|
|
; CHECK-NEXT: movq %rax, %rsp
|
|
; CHECK-NEXT: movq %rax, %rdi
|
|
; CHECK-NEXT: callq use_addr
|
|
; CHECK-NEXT: movq %rbx, %rsp
|
|
; CHECK-NEXT: leaq -8(%rbp), %rsp
|
|
; CHECK-NEXT: popq %rbx
|
|
; CHECK-NEXT: popq %rbp
|
|
; CHECK-NEXT: .cfi_def_cfa %rsp, 8
|
|
; CHECK-NEXT: retq
|
|
%sp = call ptr @llvm.stacksave.p0()
|
|
%addr = alloca i8, i64 %n
|
|
call void @use_addr(ptr %addr)
|
|
call void @llvm.stackrestore.p0(ptr %sp)
|
|
ret void
|
|
}
|