1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5 2; RUN: llc --force-dwarf-frame-section %s -o - | FileCheck %s 3; RUN: llc --filetype=obj %s -o - | llvm-readelf --unwind - | FileCheck %s --check-prefix=UNWIND 4target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64" 5target triple = "thumbv8.1m.main-arm-none-eabi" 6 7; C++ 8; int g(int); 9; 10; int f(int n, ...) { 11; __builtin_va_list ap; 12; __builtin_va_start(ap, n); 13; int s = 0; 14; for (int i = 0; i < n; ++i) 15; s += g(__builtin_va_arg(ap, int)); 16; __builtin_va_end(ap); 17; return s; 18; } 19 20%"struct.std::__va_list" = type { ptr } 21 22define hidden i32 @_Z1fiz(i32 %n, ...) local_unnamed_addr #0 { 23; CHECK-LABEL: _Z1fiz: 24; CHECK: .cfi_sections .debug_frame 25; CHECK-NEXT: .cfi_startproc 26; CHECK-NEXT: @ %bb.0: @ %entry 27; CHECK-NEXT: pac r12, lr, sp 28; CHECK-NEXT: .pad #12 29; CHECK-NEXT: sub sp, #12 30; CHECK-NEXT: .cfi_def_cfa_offset 12 31; CHECK-NEXT: .save {r4, r5, r7, ra_auth_code, lr} 32; CHECK-NEXT: push.w {r4, r5, r7, r12, lr} 33; CHECK-NEXT: .cfi_def_cfa_offset 32 34; CHECK-NEXT: .cfi_offset lr, -16 35; CHECK-NEXT: .cfi_offset ra_auth_code, -20 36; CHECK-NEXT: .cfi_offset r7, -24 37; CHECK-NEXT: .cfi_offset r5, -28 38; CHECK-NEXT: .cfi_offset r4, -32 39; CHECK-NEXT: .pad #8 40; CHECK-NEXT: sub sp, #8 41; CHECK-NEXT: .cfi_def_cfa_offset 40 42; CHECK-NEXT: mov r4, r0 43; CHECK-NEXT: add r0, sp, #28 44; CHECK-NEXT: movs r5, #0 45; CHECK-NEXT: cmp r4, #1 46; CHECK-NEXT: stm r0!, {r1, r2, r3} 47; CHECK-NEXT: add r0, sp, #28 48; CHECK-NEXT: str r0, [sp, #4] 49; CHECK-NEXT: blt .LBB0_2 50; CHECK-NEXT: .LBB0_1: @ %for.body 51; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1 52; CHECK-NEXT: ldr r0, [sp, #4] 53; CHECK-NEXT: adds r1, r0, #4 54; CHECK-NEXT: str r1, [sp, #4] 55; CHECK-NEXT: ldr r0, [r0] 56; CHECK-NEXT: bl _Z1gi 57; CHECK-NEXT: add r5, r0 58; CHECK-NEXT: subs r4, #1 59; CHECK-NEXT: bne .LBB0_1 60; CHECK-NEXT: .LBB0_2: @ %for.cond.cleanup 61; CHECK-NEXT: mov r0, r5 62; CHECK-NEXT: add sp, #8 63; CHECK-NEXT: pop.w {r4, r5, r7, r12, lr} 64; CHECK-NEXT: add sp, #12 65; CHECK-NEXT: aut r12, lr, sp 66; CHECK-NEXT: bx lr 67entry: 68 %ap = alloca %"struct.std::__va_list", align 4 69 call void @llvm.va_start(ptr nonnull %ap) 70 %cmp7 = icmp sgt i32 %n, 0 71 br i1 %cmp7, label %for.body.lr.ph, label %for.cond.cleanup 72 73for.body.lr.ph: ; preds = %entry 74 br label %for.body 75 76for.cond.cleanup: ; preds = %for.body, %entry 77 %s.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ] 78 call void @llvm.va_end(ptr nonnull %ap) 79 ret i32 %s.0.lcssa 80 81for.body: ; preds = %for.body.lr.ph, %for.body 82 %i.09 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ] 83 %s.08 = phi i32 [ 0, %for.body.lr.ph ], [ %add, %for.body ] 84 %argp.cur = load ptr, ptr %ap, align 4 85 %argp.next = getelementptr inbounds i8, ptr %argp.cur, i32 4 86 store ptr %argp.next, ptr %ap, align 4 87 %0 = load i32, ptr %argp.cur, align 4 88 %call = call i32 @_Z1gi(i32 %0) 89 %add = add nsw i32 %call, %s.08 90 %inc = add nuw nsw i32 %i.09, 1 91 %exitcond.not = icmp eq i32 %inc, %n 92 br i1 %exitcond.not, label %for.cond.cleanup, label %for.body 93} 94 95declare void @llvm.va_start(ptr) #1 96declare void @llvm.va_end(ptr) #1 97 98declare dso_local i32 @_Z1gi(i32) local_unnamed_addr 99 100attributes #0 = { optsize "sign-return-address"="non-leaf"} 101attributes #1 = { nounwind "sign-return-address"="non-leaf"} 102 103!llvm.module.flags = !{!0, !1, !2} 104 105!0 = !{i32 8, !"branch-target-enforcement", i32 0} 106!1 = !{i32 8, !"sign-return-address", i32 1} 107!2 = !{i32 8, !"sign-return-address-all", i32 0} 108 109; UNWIND-LABEL: FunctionAddress 110; UNWIND: 0x01 ; vsp = vsp + 8 111; UNWIND-NEXT: 0x80 0x0B ; pop {r4, r5, r7} 112; UNWIND-NEXT: 0xB4 ; pop ra_auth_code 113; UNWIND-NEXT: 0x84 0x00 ; pop {lr} 114; UNWIND-NEXT: 0x02 ; vsp = vsp + 12 115 116