1; RUN: llc -verify-machineinstrs -mtriple=arm64-linux-gnu -pre-RA-sched=linearize -enable-misched=false < %s | FileCheck %s 2 3%va_list = type {i8*, i8*, i8*, i32, i32} 4 5@var = global %va_list zeroinitializer, align 8 6 7declare void @llvm.va_start(i8*) 8 9define void @test_simple(i32 %n, ...) { 10; CHECK-LABEL: test_simple: 11; CHECK: sub sp, sp, #[[STACKSIZE:[0-9]+]] 12; CHECK: add [[STACK_TOP:x[0-9]+]], sp, #[[STACKSIZE]] 13 14; CHECK: adrp x[[VA_LIST_HI:[0-9]+]], var 15 16; CHECK: stp x1, x2, [sp, #[[GR_BASE:[0-9]+]]] 17; ... omit middle ones ... 18; CHECK: str x7, [sp, # 19 20; CHECK: stp q0, q1, [sp] 21; ... omit middle ones ... 22; CHECK: stp q6, q7, [sp, # 23 24; CHECK: str [[STACK_TOP]], [x[[VA_LIST_HI]], :lo12:var] 25 26; CHECK: add [[GR_TOPTMP:x[0-9]+]], sp, #[[GR_BASE]] 27; CHECK: add [[GR_TOP:x[0-9]+]], [[GR_TOPTMP]], #56 28; CHECK: add x[[VA_LIST:[0-9]+]], {{x[0-9]+}}, :lo12:var 29; CHECK: str [[GR_TOP]], [x[[VA_LIST]], #8] 30 31; CHECK: mov [[VR_TOPTMP:x[0-9]+]], sp 32; CHECK: add [[VR_TOP:x[0-9]+]], [[VR_TOPTMP]], #128 33; CHECK: str [[VR_TOP]], [x[[VA_LIST]], #16] 34 35; CHECK: movn [[GR_OFFS:w[0-9]+]], #0x37 36; CHECK: str [[GR_OFFS]], [x[[VA_LIST]], #24] 37 38; CHECK: orr [[VR_OFFS:w[0-9]+]], wzr, #0xffffff80 39; CHECK: str [[VR_OFFS]], [x[[VA_LIST]], #28] 40 41 %addr = bitcast %va_list* @var to i8* 42 call void @llvm.va_start(i8* %addr) 43 44 ret void 45} 46 47define void @test_fewargs(i32 %n, i32 %n1, i32 %n2, float %m, ...) { 48; CHECK-LABEL: test_fewargs: 49; CHECK: sub sp, sp, #[[STACKSIZE:[0-9]+]] 50; CHECK: add [[STACK_TOP:x[0-9]+]], sp, #[[STACKSIZE]] 51 52; CHECK: adrp x[[VA_LIST_HI:[0-9]+]], var 53 54; CHECK: stp x3, x4, [sp, #[[GR_BASE:[0-9]+]]] 55; ... omit middle ones ... 56; CHECK: str x7, [sp, # 57 58; CHECK: stp q1, q2, [sp] 59; ... omit middle ones ... 60; CHECK: str q7, [sp, # 61 62; CHECK: str [[STACK_TOP]], [x[[VA_LIST_HI]], :lo12:var] 63 64; CHECK: add [[GR_TOPTMP:x[0-9]+]], sp, #[[GR_BASE]] 65; CHECK: add [[GR_TOP:x[0-9]+]], [[GR_TOPTMP]], #40 66; CHECK: add x[[VA_LIST:[0-9]+]], {{x[0-9]+}}, :lo12:var 67; CHECK: str [[GR_TOP]], [x[[VA_LIST]], #8] 68 69; CHECK: mov [[VR_TOPTMP:x[0-9]+]], sp 70; CHECK: add [[VR_TOP:x[0-9]+]], [[VR_TOPTMP]], #112 71; CHECK: str [[VR_TOP]], [x[[VA_LIST]], #16] 72 73; CHECK: movn [[GR_OFFS:w[0-9]+]], #0x27 74; CHECK: str [[GR_OFFS]], [x[[VA_LIST]], #24] 75 76; CHECK: movn [[VR_OFFS:w[0-9]+]], #0x6f 77; CHECK: str [[VR_OFFS]], [x[[VA_LIST]], #28] 78 79 %addr = bitcast %va_list* @var to i8* 80 call void @llvm.va_start(i8* %addr) 81 82 ret void 83} 84 85define void @test_nospare([8 x i64], [8 x float], ...) { 86; CHECK-LABEL: test_nospare: 87 88 %addr = bitcast %va_list* @var to i8* 89 call void @llvm.va_start(i8* %addr) 90; CHECK-NOT: sub sp, sp 91; CHECK: mov [[STACK:x[0-9]+]], sp 92; CHECK: str [[STACK]], [{{x[0-9]+}}, :lo12:var] 93 94 ret void 95} 96 97; If there are non-variadic arguments on the stack (here two i64s) then the 98; __stack field should point just past them. 99define void @test_offsetstack([10 x i64], [3 x float], ...) { 100; CHECK-LABEL: test_offsetstack: 101; CHECK: sub sp, sp, #80 102; CHECK: add [[STACK_TOP:x[0-9]+]], sp, #96 103; CHECK: str [[STACK_TOP]], [{{x[0-9]+}}, :lo12:var] 104 105 %addr = bitcast %va_list* @var to i8* 106 call void @llvm.va_start(i8* %addr) 107 ret void 108} 109 110declare void @llvm.va_end(i8*) 111 112define void @test_va_end() nounwind { 113; CHECK-LABEL: test_va_end: 114; CHECK-NEXT: BB#0 115 116 %addr = bitcast %va_list* @var to i8* 117 call void @llvm.va_end(i8* %addr) 118 119 ret void 120; CHECK-NEXT: ret 121} 122 123declare void @llvm.va_copy(i8* %dest, i8* %src) 124 125@second_list = global %va_list zeroinitializer 126 127define void @test_va_copy() { 128; CHECK-LABEL: test_va_copy: 129 %srcaddr = bitcast %va_list* @var to i8* 130 %dstaddr = bitcast %va_list* @second_list to i8* 131 call void @llvm.va_copy(i8* %dstaddr, i8* %srcaddr) 132 133; CHECK: add x[[SRC:[0-9]+]], {{x[0-9]+}}, :lo12:var 134 135; CHECK: ldr [[BLOCK:q[0-9]+]], [x[[SRC]]] 136; CHECK: add x[[DST:[0-9]+]], {{x[0-9]+}}, :lo12:second_list 137; CHECK: str [[BLOCK]], [x[[DST]]] 138 139; CHECK: ldr [[BLOCK:q[0-9]+]], [x[[SRC]], #16] 140; CHECK: str [[BLOCK]], [x[[DST]], #16] 141 ret void 142; CHECK: ret 143} 144