forked from OSchip/llvm-project
40 lines
1.2 KiB
LLVM
40 lines
1.2 KiB
LLVM
; RUN: llc -mtriple=x86_64-windows-msvc < %s | FileCheck %s
|
|
|
|
declare i8* @llvm.frameallocate(i32)
|
|
declare i8* @llvm.frameaddress(i32)
|
|
declare i8* @llvm.framerecover(i8*, i8*)
|
|
declare i32 @printf(i8*, ...)
|
|
|
|
@str = internal constant [10 x i8] c"asdf: %d\0A\00"
|
|
|
|
define void @print_framealloc_from_fp(i8* %fp) {
|
|
%alloc = call i8* @llvm.framerecover(i8* bitcast (void(i32*, i32*)* @alloc_func to i8*), i8* %fp)
|
|
%alloc_i32 = bitcast i8* %alloc to i32*
|
|
%r = load i32* %alloc_i32
|
|
call i32 (i8*, ...)* @printf(i8* getelementptr ([10 x i8]* @str, i32 0, i32 0), i32 %r)
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: print_framealloc_from_fp:
|
|
; CHECK: movabsq $.Lframeallocation_alloc_func, %[[offs:[a-z]+]]
|
|
; CHECK: movl (%rcx,%[[offs]]), %edx
|
|
; CHECK: leaq {{.*}}(%rip), %rcx
|
|
; CHECK: callq printf
|
|
; CHECK: retq
|
|
|
|
define void @alloc_func(i32* %s, i32* %d) {
|
|
%alloc = call i8* @llvm.frameallocate(i32 16)
|
|
%alloc_i32 = bitcast i8* %alloc to i32*
|
|
store i32 42, i32* %alloc_i32
|
|
%fp = call i8* @llvm.frameaddress(i32 0)
|
|
call void @print_framealloc_from_fp(i8* %fp)
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: alloc_func:
|
|
; CHECK: .Lframeallocation_alloc_func = -[[offs:[0-9]+]]
|
|
; CHECK: movl $42, -[[offs]](%rbp)
|
|
; CHECK: movq %rbp, %rcx
|
|
; CHECK: callq print_framealloc_from_fp
|
|
; CHECK: retq
|