99 lines
3.2 KiB
LLVM
99 lines
3.2 KiB
LLVM
|
; RUN: llc --force-dwarf-frame-section %s -o - | FileCheck %s
|
||
|
|
; RUN: llc --filetype=obj %s -o - | llvm-readelf --unwind - | FileCheck %s --check-prefix=UNWIND
|
||
|
|
target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
|
||
|
|
target triple = "thumbv8.1m.main-arm-none-eabi"
|
||
|
|
|
||
|
|
; C++
|
||
|
|
; int g(int);
|
||
|
|
;
|
||
|
|
; int f(int n, ...) {
|
||
|
|
; __builtin_va_list ap;
|
||
|
|
; __builtin_va_start(ap, n);
|
||
|
|
; int s = 0;
|
||
|
|
; for (int i = 0; i < n; ++i)
|
||
|
|
; s += g(__builtin_va_arg(ap, int));
|
||
|
|
; __builtin_va_end(ap);
|
||
|
|
; return s;
|
||
|
|
; }
|
||
|
|
|
||
|
|
%"struct.std::__va_list" = type { ptr }
|
||
|
|
|
||
|
|
define hidden i32 @_Z1fiz(i32 %n, ...) local_unnamed_addr #0 {
|
||
|
|
entry:
|
||
|
|
%ap = alloca %"struct.std::__va_list", align 4
|
||
|
|
call void @llvm.va_start(ptr nonnull %ap)
|
||
|
|
%cmp7 = icmp sgt i32 %n, 0
|
||
|
|
br i1 %cmp7, label %for.body.lr.ph, label %for.cond.cleanup
|
||
|
|
|
||
|
|
for.body.lr.ph: ; preds = %entry
|
||
|
|
br label %for.body
|
||
|
|
|
||
|
|
for.cond.cleanup: ; preds = %for.body, %entry
|
||
|
|
%s.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]
|
||
|
|
call void @llvm.va_end(ptr nonnull %ap)
|
||
|
|
ret i32 %s.0.lcssa
|
||
|
|
|
||
|
|
for.body: ; preds = %for.body.lr.ph, %for.body
|
||
|
|
%i.09 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
|
||
|
|
%s.08 = phi i32 [ 0, %for.body.lr.ph ], [ %add, %for.body ]
|
||
|
|
%argp.cur = load ptr, ptr %ap, align 4
|
||
|
|
%argp.next = getelementptr inbounds i8, ptr %argp.cur, i32 4
|
||
|
|
store ptr %argp.next, ptr %ap, align 4
|
||
|
|
%0 = load i32, ptr %argp.cur, align 4
|
||
|
|
%call = call i32 @_Z1gi(i32 %0)
|
||
|
|
%add = add nsw i32 %call, %s.08
|
||
|
|
%inc = add nuw nsw i32 %i.09, 1
|
||
|
|
%exitcond.not = icmp eq i32 %inc, %n
|
||
|
|
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK-LABEL: _Z1fiz:
|
||
|
|
; CHECK: pac r12, lr, sp
|
||
|
|
; CHECK-NEXT: .pad #12
|
||
|
|
; CHECK-NEXT: sub sp, #12
|
||
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 12
|
||
|
|
; CHECK-NEXT: .save {r4, r5, r7, lr}
|
||
|
|
; CHECK-NEXT: push {r4, r5, r7, lr}
|
||
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 28
|
||
|
|
; CHECK-NEXT: .cfi_offset lr, -16
|
||
|
|
; CHECK-NEXT: .cfi_offset r7, -20
|
||
|
|
; CHECK-NEXT: .cfi_offset r5, -24
|
||
|
|
; CHECK-NEXT: .cfi_offset r4, -28
|
||
|
|
; CHECK-NEXT: .save {ra_auth_code}
|
||
|
|
; CHECK-NEXT: str r12, [sp, #-4]!
|
||
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 32
|
||
|
|
; CHECK-NEXT: .cfi_offset ra_auth_code, -32
|
||
|
|
; CHECK-NEXT: .pad #8
|
||
|
|
; CHECK-NEXT: sub sp, #8
|
||
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 40
|
||
|
|
; ...
|
||
|
|
; CHECK: add r[[N:[0-9]*]], sp, #28
|
||
|
|
; CHECK: stm r[[N]]!, {r1, r2, r3}
|
||
|
|
; ...
|
||
|
|
; CHECK: add sp, #8
|
||
|
|
; CHECK-NEXT: ldr r12, [sp], #4
|
||
|
|
; CHECK-NEXT: pop.w {r4, r5, r7, lr}
|
||
|
|
; CHECK-NEXT: add sp, #12
|
||
|
|
; CHECK-NEXT: aut r12, lr, sp
|
||
|
|
; CHECK-NEXT: bx lr
|
||
|
|
|
||
|
|
declare void @llvm.va_start(ptr) #1
|
||
|
|
declare void @llvm.va_end(ptr) #1
|
||
|
|
|
||
|
|
declare dso_local i32 @_Z1gi(i32) local_unnamed_addr
|
||
|
|
|
||
|
|
attributes #0 = { optsize }
|
||
|
|
attributes #1 = { nounwind }
|
||
|
|
|
||
|
|
!llvm.module.flags = !{!0, !1, !2}
|
||
|
|
|
||
|
|
!0 = !{i32 8, !"branch-target-enforcement", i32 0}
|
||
|
|
!1 = !{i32 8, !"sign-return-address", i32 1}
|
||
|
|
!2 = !{i32 8, !"sign-return-address-all", i32 0}
|
||
|
|
|
||
|
|
; UNWIND-LABEL: FunctionAddress
|
||
|
|
; UNWIND: 0x01 ; vsp = vsp + 8
|
||
|
|
; UNWIND-NEXT: 0xB4 ; pop ra_auth_code
|
||
|
|
; UNWIND-NEXT: 0x84 0x0B ; pop {r4, r5, r7, lr}
|
||
|
|
; UNWIND-NEXT: 0x02 ; vsp = vsp + 12
|