mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-21 18:29:45 +00:00
42fcf79f36
We know that the absolute symbol will be less than 2GB and thus will always fit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231389 91177308-0d34-0410-b5e6-96231b3b80d8
64 lines
2.0 KiB
LLVM
64 lines
2.0 KiB
LLVM
; RUN: llc -mtriple=x86_64-windows-msvc < %s | FileCheck %s
|
|
|
|
declare void @llvm.frameescape(...)
|
|
declare i8* @llvm.frameaddress(i32)
|
|
declare i8* @llvm.framerecover(i8*, i8*, i32)
|
|
declare i32 @printf(i8*, ...)
|
|
|
|
@str = internal constant [10 x i8] c"asdf: %d\0A\00"
|
|
|
|
define void @print_framealloc_from_fp(i8* %fp) {
|
|
%a.i8 = call i8* @llvm.framerecover(i8* bitcast (void()* @alloc_func to i8*), i8* %fp, i32 0)
|
|
%a = bitcast i8* %a.i8 to i32*
|
|
%a.val = load i32, i32* %a
|
|
call i32 (i8*, ...)* @printf(i8* getelementptr ([10 x i8]* @str, i32 0, i32 0), i32 %a.val)
|
|
%b.i8 = call i8* @llvm.framerecover(i8* bitcast (void()* @alloc_func to i8*), i8* %fp, i32 1)
|
|
%b = bitcast i8* %b.i8 to i32*
|
|
%b.val = load i32, i32* %b
|
|
call i32 (i8*, ...)* @printf(i8* getelementptr ([10 x i8]* @str, i32 0, i32 0), i32 %b.val)
|
|
store i32 42, i32* %b
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: print_framealloc_from_fp:
|
|
; CHECK: movq %rcx, %[[parent_fp:[a-z]+]]
|
|
; CHECK: movl .Lalloc_func$frame_escape_0(%[[parent_fp]]), %edx
|
|
; CHECK: leaq {{.*}}(%rip), %[[str:[a-z]+]]
|
|
; CHECK: movq %[[str]], %rcx
|
|
; CHECK: callq printf
|
|
; CHECK: movl .Lalloc_func$frame_escape_1(%[[parent_fp]]), %edx
|
|
; CHECK: movq %[[str]], %rcx
|
|
; CHECK: callq printf
|
|
; CHECK: movl $42, .Lalloc_func$frame_escape_1(%[[parent_fp]])
|
|
; CHECK: retq
|
|
|
|
define void @alloc_func() {
|
|
%a = alloca i32
|
|
%b = alloca i32
|
|
call void (...)* @llvm.frameescape(i32* %a, i32* %b)
|
|
store i32 42, i32* %a
|
|
store i32 13, i32* %b
|
|
%fp = call i8* @llvm.frameaddress(i32 0)
|
|
call void @print_framealloc_from_fp(i8* %fp)
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: alloc_func:
|
|
; CHECK: subq $48, %rsp
|
|
; CHECK: .seh_stackalloc 48
|
|
; CHECK: leaq 48(%rsp), %rbp
|
|
; CHECK: .seh_setframe 5, 48
|
|
; CHECK: .Lalloc_func$frame_escape_0 = 44
|
|
; CHECK: .Lalloc_func$frame_escape_1 = 40
|
|
; CHECK: movl $42, -4(%rbp)
|
|
; CHECK: movl $13, -8(%rbp)
|
|
; CHECK: leaq -48(%rbp), %rcx
|
|
; CHECK: callq print_framealloc_from_fp
|
|
; CHECK: retq
|
|
|
|
; Helper to make this a complete program so it can be compiled and tested.
|
|
define i32 @main() {
|
|
call void @alloc_func()
|
|
ret i32 0
|
|
}
|