test/CodeGen/WebAssembly/call.ll

   1 ; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-keep-registers -mattr=+sign-ext,+simd128 | FileCheck --check-prefixes=CHECK,NO-TAIL,SLOW-NO-TAIL %s
   2 ; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-keep-registers -fast-isel -fast-isel-abort=1 -mattr=+sign-ext,+simd128 | FileCheck --check-prefixes=CHECK,NO-TAIL,FAST,FAST-NO-TAIL %s
   3 ; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-keep-registers -mattr=+sign-ext,+simd128,+tail-call | FileCheck --check-prefixes=CHECK,TAIL,SLOW-TAIL %s
   4 ; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-keep-registers -fast-isel -fast-isel-abort=1 -mattr=+sign-ext,+simd128,+tail-call | FileCheck --check-prefixes=CHECK,TAIL,FAST-TAIL %s
   5
   6 ; Test that basic call operations assemble as expected.
   7
   8 target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
   9 target triple = "wasm32-unknown-unknown"
  10
  11 declare i32 @i32_nullary()
  12 declare i32 @i32_unary(i32)
  13 declare i32 @i32_binary(i32, i32)
  14 declare i64 @i64_nullary()
  15 declare float @float_nullary()
  16 declare double @double_nullary()
  17 declare <16 x i8> @v128_nullary()
  18 declare void @void_nullary()
  19
  20 ; CHECK-LABEL: call_i32_nullary:
  21 ; CHECK-NEXT: .functype call_i32_nullary () -> (i32){{$}}
  22 ; CHECK-NEXT: {{^}} i32.call $push[[NUM:[0-9]+]]=, i32_nullary{{$}}
  23 ; CHECK-NEXT: return $pop[[NUM]]{{$}}
  24 define i32 @call_i32_nullary() {
  25   %r = call i32 @i32_nullary()
  26   ret i32 %r
  27 }
  28
  29 ; CHECK-LABEL: call_i64_nullary:
  30 ; CHECK-NEXT: .functype call_i64_nullary () -> (i64){{$}}
  31 ; CHECK-NEXT: {{^}} i64.call $push[[NUM:[0-9]+]]=, i64_nullary{{$}}
  32 ; CHECK-NEXT: return $pop[[NUM]]{{$}}
  33 define i64 @call_i64_nullary() {
  34   %r = call i64 @i64_nullary()
  35   ret i64 %r
  36 }
  37
  38 ; CHECK-LABEL: call_float_nullary:
  39 ; CHECK-NEXT: .functype call_float_nullary () -> (f32){{$}}
  40 ; CHECK-NEXT: {{^}} f32.call $push[[NUM:[0-9]+]]=, float_nullary{{$}}
  41 ; CHECK-NEXT: return $pop[[NUM]]{{$}}
  42 define float @call_float_nullary() {
  43   %r = call float @float_nullary()
  44   ret float %r
  45 }
  46
  47 ; CHECK-LABEL: call_double_nullary:
  48 ; CHECK-NEXT: .functype call_double_nullary () -> (f64){{$}}
  49 ; CHECK-NEXT: {{^}} f64.call $push[[NUM:[0-9]+]]=, double_nullary{{$}}
  50 ; CHECK-NEXT: return $pop[[NUM]]{{$}}
  51 define double @call_double_nullary() {
  52   %r = call double @double_nullary()
  53   ret double %r
  54 }
  55
  56 ; CHECK-LABEL: call_v128_nullary:
  57 ; CHECK-NEXT: .functype call_v128_nullary () -> (v128){{$}}
  58 ; CHECK-NEXT: {{^}} v128.call $push[[NUM:[0-9]+]]=, v128_nullary{{$}}
  59 ; CHECK-NEXT: return $pop[[NUM]]{{$}}
  60 define <16 x i8> @call_v128_nullary() {
  61   %r = call <16 x i8> @v128_nullary()
  62   ret <16 x i8> %r
  63 }
  64
  65 ; CHECK-LABEL: call_void_nullary:
  66 ; CHECK-NEXT: .functype call_void_nullary () -> (){{$}}
  67 ; CHECK-NEXT: {{^}} call void_nullary{{$}}
  68 ; CHECK-NEXT: return{{$}}
  69 define void @call_void_nullary() {
  70   call void @void_nullary()
  71   ret void
  72 }
  73
  74 ; CHECK-LABEL: call_i32_unary:
  75 ; CHECK-NEXT: .functype call_i32_unary (i32) -> (i32){{$}}
  76 ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
  77 ; CHECK-NEXT: {{^}} i32.call $push[[NUM:[0-9]+]]=, i32_unary, $pop[[L0]]{{$}}
  78 ; CHECK-NEXT: return $pop[[NUM]]{{$}}
  79 define i32 @call_i32_unary(i32 %a) {
  80   %r = call i32 @i32_unary(i32 %a)
  81   ret i32 %r
  82 }
  83
  84 ; CHECK-LABEL: call_i32_binary:
  85 ; CHECK-NEXT: .functype call_i32_binary (i32, i32) -> (i32){{$}}
  86 ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
  87 ; CHECK-NEXT: local.get $push[[L1:[0-9]+]]=, 1{{$}}
  88 ; CHECK-NEXT: {{^}} i32.call $push[[NUM:[0-9]+]]=, i32_binary, $pop[[L0]], $pop[[L1]]{{$}}
  89 ; CHECK-NEXT: return $pop[[NUM]]{{$}}
  90 define i32 @call_i32_binary(i32 %a, i32 %b) {
  91   %r = call i32 @i32_binary(i32 %a, i32 %b)
  92   ret i32 %r
  93 }
  94
  95 ; CHECK-LABEL: call_indirect_void:
  96 ; CHECK-NEXT: .functype call_indirect_void (i32) -> (){{$}}
  97 ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
  98 ; CHECK-NEXT: {{^}} call_indirect $pop[[L0]]{{$}}
  99 ; CHECK-NEXT: return{{$}}
 100 define void @call_indirect_void(void ()* %callee) {
 101   call void %callee()
 102   ret void
 103 }
 104
 105 ; CHECK-LABEL: call_indirect_i32:
 106 ; CHECK-NEXT: .functype call_indirect_i32 (i32) -> (i32){{$}}
 107 ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
 108 ; CHECK-NEXT: {{^}} i32.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}
 109 ; CHECK-NEXT: return $pop[[NUM]]{{$}}
 110 define i32 @call_indirect_i32(i32 ()* %callee) {
 111   %t = call i32 %callee()
 112   ret i32 %t
 113 }
 114
 115 ; CHECK-LABEL: call_indirect_i64:
 116 ; CHECK-NEXT: .functype call_indirect_i64 (i32) -> (i64){{$}}
 117 ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
 118 ; CHECK-NEXT: {{^}} i64.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}
 119 ; CHECK-NEXT: return $pop[[NUM]]{{$}}
 120 define i64 @call_indirect_i64(i64 ()* %callee) {
 121   %t = call i64 %callee()
 122   ret i64 %t
 123 }
 124
 125 ; CHECK-LABEL: call_indirect_float:
 126 ; CHECK-NEXT: .functype call_indirect_float (i32) -> (f32){{$}}
 127 ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
 128 ; CHECK-NEXT: {{^}} f32.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}
 129 ; CHECK-NEXT: return $pop[[NUM]]{{$}}
 130 define float @call_indirect_float(float ()* %callee) {
 131   %t = call float %callee()
 132   ret float %t
 133 }
 134
 135 ; CHECK-LABEL: call_indirect_double:
 136 ; CHECK-NEXT: .functype call_indirect_double (i32) -> (f64){{$}}
 137 ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
 138 ; CHECK-NEXT: {{^}} f64.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}
 139 ; CHECK-NEXT: return $pop[[NUM]]{{$}}
 140 define double @call_indirect_double(double ()* %callee) {
 141   %t = call double %callee()
 142   ret double %t
 143 }
 144
 145 ; CHECK-LABEL: call_indirect_v128:
 146 ; CHECK-NEXT: .functype call_indirect_v128 (i32) -> (v128){{$}}
 147 ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
 148 ; CHECK-NEXT: {{^}} v128.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}
 149 ; CHECK-NEXT: return $pop[[NUM]]{{$}}
 150 define <16 x i8> @call_indirect_v128(<16 x i8> ()* %callee) {
 151   %t = call <16 x i8> %callee()
 152   ret <16 x i8> %t
 153 }
 154
 155 ; CHECK-LABEL: call_indirect_arg:
 156 ; CHECK-NEXT: .functype call_indirect_arg (i32, i32) -> (){{$}}
 157 ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 1{{$}}
 158 ; CHECK-NEXT: local.get $push[[L1:[0-9]+]]=, 0{{$}}
 159 ; CHECK-NEXT: {{^}} call_indirect $pop[[L0]], $pop[[L1]]{{$}}
 160 ; CHECK-NEXT: return{{$}}
 161 define void @call_indirect_arg(void (i32)* %callee, i32 %arg) {
 162   call void %callee(i32 %arg)
 163   ret void
 164 }
 165
 166 ; CHECK-LABEL: call_indirect_arg_2:
 167 ; CHECK-NEXT: .functype call_indirect_arg_2 (i32, i32, i32) -> (){{$}}
 168 ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 1{{$}}
 169 ; CHECK-NEXT: local.get $push[[L1:[0-9]+]]=, 2{{$}}
 170 ; CHECK-NEXT: local.get $push[[L2:[0-9]+]]=, 0{{$}}
 171 ; CHECK-NEXT: {{^}} i32.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]], $pop[[L1]], $pop[[L2]]{{$}}
 172 ; CHECK-NEXT: drop $pop[[NUM]]{{$}}
 173 ; CHECK-NEXT: return{{$}}
 174 define void @call_indirect_arg_2(i32 (i32, i32)* %callee, i32 %arg, i32 %arg2) {
 175   call i32 %callee(i32 %arg, i32 %arg2)
 176   ret void
 177 }
 178
 179 ; CHECK-LABEL: tail_call_void_nullary:
 180 ; CHECK-NEXT: .functype tail_call_void_nullary () -> (){{$}}
 181 ; NO-TAIL-NEXT: {{^}} call void_nullary{{$}}
 182 ; NO-TAIL-NEXT: return{{$}}
 183 ; SLOW-TAIL-NEXT: {{^}} return_call void_nullary{{$}}
 184 ; FAST-TAIL-NEXT: {{^}} call void_nullary{{$}}
 185 ; FAST-TAIL-NEXT: return{{$}}
 186 define void @tail_call_void_nullary() {
 187   tail call void @void_nullary()
 188   ret void
 189 }
 190
 191 ; CHECK-LABEL: fastcc_tail_call_void_nullary:
 192 ; CHECK-NEXT: .functype fastcc_tail_call_void_nullary () -> (){{$}}
 193 ; NO-TAIL-NEXT: {{^}} call void_nullary{{$}}
 194 ; NO-TAIL-NEXT: return{{$}}
 195 ; SLOW-TAIL-NEXT: {{^}} return_call void_nullary{{$}}
 196 ; FAST-TAIL-NEXT: {{^}} call void_nullary{{$}}
 197 ; FAST-TAIL-NEXT: return{{$}}
 198 define void @fastcc_tail_call_void_nullary() {
 199   tail call fastcc void @void_nullary()
 200   ret void
 201 }
 202
 203 ; CHECK-LABEL: coldcc_tail_call_void_nullary:
 204 ; CHECK-NEXT: .functype coldcc_tail_call_void_nullary () -> (){{$}}
 205 ; NO-TAIL-NEXT: {{^}} call void_nullary{{$}}
 206 ; NO-TAIL-NEXT: return{{$}}
 207 ; SLOW-TAIL-NEXT: {{^}} return_call void_nullary{{$}}
 208 ; FAST-TAIL-NEXT: {{^}} call void_nullary{{$}}
 209 ; FAST-TAIL-NEXT: return{{$}}
 210 define void @coldcc_tail_call_void_nullary() {
 211   tail call coldcc void @void_nullary()
 212   ret void
 213 }
 214
 215 ; CHECK-LABEL: call_constexpr:
 216 ; CHECK-NEXT: .functype call_constexpr () -> (){{$}}
 217 ; CHECK-NEXT: i32.const $push[[L0:[0-9]+]]=, 2{{$}}
 218 ; CHECK-NEXT: i32.const $push[[L1:[0-9]+]]=, 3{{$}}
 219 ; CHECK-NEXT: call .Lvararg_func_bitcast, $pop[[L0]], $pop[[L1]]{{$}}
 220 ; CHECK-NEXT: call other_void_nullary{{$}}
 221 ; CHECK-NEXT: call void_nullary{{$}}
 222 ; CHECK-NEXT: return{{$}}
 223 declare void @vararg_func(...)
 224 declare void @other_void_nullary()
 225 define void @call_constexpr() {
 226 bb0:
 227   call void bitcast (void (...)* @vararg_func to void (i32, i32)*)(i32 2, i32 3)
 228   br label %bb1
 229 bb1:
 230   call void select (i1 0, void ()* @void_nullary, void ()* @other_void_nullary)()
 231   br label %bb2
 232 bb2:
 233   call void inttoptr (i32 ptrtoint (void ()* @void_nullary to i32) to void ()*)()
 234   ret void
 235 }
 236
 237 ; TODO: test the following:
 238 ;  - More argument combinations.
 239 ;  - Tail call.
 240 ;  - Interesting returns (struct, multiple).
 241 ;  - Vararg.