test/CodeGen/WebAssembly/call.ll - llvm - Git at Google


            
            ; 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

            
            ; 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

            
            ; 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

            
            ; 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


            ; Test that basic call operations assemble as expected.


            target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"

            
            target triple = "wasm32-unknown-unknown"


            declare i32 @i32_nullary()

            
            declare i32 @i32_unary(i32)

            
            declare i32 @i32_binary(i32, i32)

            
            declare i64 @i64_nullary()

            
            declare float @float_nullary()

            
            declare double @double_nullary()

            
            declare <16 x i8> @v128_nullary()

            
            declare void @void_nullary()


            ; CHECK-LABEL: call_i32_nullary:

            
            ; CHECK-NEXT: .functype call_i32_nullary () -> (i32){{$}}

            
            ; CHECK-NEXT: {{^}} i32.call $push[[NUM:[0-9]+]]=, i32_nullary{{$}}

            
            ; CHECK-NEXT: return $pop[[NUM]]{{$}}

            
            define i32 @call_i32_nullary() {

            
              %r = call i32 @i32_nullary()

            
              ret i32 %r

            
            }


            ; CHECK-LABEL: call_i64_nullary:

            
            ; CHECK-NEXT: .functype call_i64_nullary () -> (i64){{$}}

            
            ; CHECK-NEXT: {{^}} i64.call $push[[NUM:[0-9]+]]=, i64_nullary{{$}}

            
            ; CHECK-NEXT: return $pop[[NUM]]{{$}}

            
            define i64 @call_i64_nullary() {

            
              %r = call i64 @i64_nullary()

            
              ret i64 %r

            
            }


            ; CHECK-LABEL: call_float_nullary:

            
            ; CHECK-NEXT: .functype call_float_nullary () -> (f32){{$}}

            
            ; CHECK-NEXT: {{^}} f32.call $push[[NUM:[0-9]+]]=, float_nullary{{$}}

            
            ; CHECK-NEXT: return $pop[[NUM]]{{$}}

            
            define float @call_float_nullary() {

            
              %r = call float @float_nullary()

            
              ret float %r

            
            }


            ; CHECK-LABEL: call_double_nullary:

            
            ; CHECK-NEXT: .functype call_double_nullary () -> (f64){{$}}

            
            ; CHECK-NEXT: {{^}} f64.call $push[[NUM:[0-9]+]]=, double_nullary{{$}}

            
            ; CHECK-NEXT: return $pop[[NUM]]{{$}}

            
            define double @call_double_nullary() {

            
              %r = call double @double_nullary()

            
              ret double %r

            
            }


            ; CHECK-LABEL: call_v128_nullary:

            
            ; CHECK-NEXT: .functype call_v128_nullary () -> (v128){{$}}

            
            ; CHECK-NEXT: {{^}} v128.call $push[[NUM:[0-9]+]]=, v128_nullary{{$}}

            
            ; CHECK-NEXT: return $pop[[NUM]]{{$}}

            
            define <16 x i8> @call_v128_nullary() {

            
              %r = call <16 x i8> @v128_nullary()

            
              ret <16 x i8> %r

            
            }


            ; CHECK-LABEL: call_void_nullary:

            
            ; CHECK-NEXT: .functype call_void_nullary () -> (){{$}}

            
            ; CHECK-NEXT: {{^}} call void_nullary{{$}}

            
            ; CHECK-NEXT: return{{$}}

            
            define void @call_void_nullary() {

            
              call void @void_nullary()

            
              ret void

            
            }


            ; CHECK-LABEL: call_i32_unary:

            
            ; CHECK-NEXT: .functype call_i32_unary (i32) -> (i32){{$}}

            
            ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}

            
            ; CHECK-NEXT: {{^}} i32.call $push[[NUM:[0-9]+]]=, i32_unary, $pop[[L0]]{{$}}

            
            ; CHECK-NEXT: return $pop[[NUM]]{{$}}

            
            define i32 @call_i32_unary(i32 %a) {

            
              %r = call i32 @i32_unary(i32 %a)

            
              ret i32 %r

            
            }


            ; CHECK-LABEL: call_i32_binary:

            
            ; CHECK-NEXT: .functype call_i32_binary (i32, i32) -> (i32){{$}}

            
            ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}

            
            ; CHECK-NEXT: local.get $push[[L1:[0-9]+]]=, 1{{$}}

            
            ; CHECK-NEXT: {{^}} i32.call $push[[NUM:[0-9]+]]=, i32_binary, $pop[[L0]], $pop[[L1]]{{$}}

            
            ; CHECK-NEXT: return $pop[[NUM]]{{$}}

            
            define i32 @call_i32_binary(i32 %a, i32 %b) {

            
              %r = call i32 @i32_binary(i32 %a, i32 %b)

            
              ret i32 %r

            
            }


            ; CHECK-LABEL: call_indirect_void:

            
            ; CHECK-NEXT: .functype call_indirect_void (i32) -> (){{$}}

            
            ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}

            
            ; CHECK-NEXT: {{^}} call_indirect $pop[[L0]]{{$}}

            
            ; CHECK-NEXT: return{{$}}

            
            define void @call_indirect_void(void ()* %callee) {

            
              call void %callee()

            
              ret void

            
            }


            ; CHECK-LABEL: call_indirect_i32:

            
            ; CHECK-NEXT: .functype call_indirect_i32 (i32) -> (i32){{$}}

            
            ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}

            
            ; CHECK-NEXT: {{^}} i32.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}

            
            ; CHECK-NEXT: return $pop[[NUM]]{{$}}

            
            define i32 @call_indirect_i32(i32 ()* %callee) {

            
              %t = call i32 %callee()

            
              ret i32 %t

            
            }


            ; CHECK-LABEL: call_indirect_i64:

            
            ; CHECK-NEXT: .functype call_indirect_i64 (i32) -> (i64){{$}}

            
            ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}

            
            ; CHECK-NEXT: {{^}} i64.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}

            
            ; CHECK-NEXT: return $pop[[NUM]]{{$}}

            
            define i64 @call_indirect_i64(i64 ()* %callee) {

            
              %t = call i64 %callee()

            
              ret i64 %t

            
            }


            ; CHECK-LABEL: call_indirect_float:

            
            ; CHECK-NEXT: .functype call_indirect_float (i32) -> (f32){{$}}

            
            ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}

            
            ; CHECK-NEXT: {{^}} f32.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}

            
            ; CHECK-NEXT: return $pop[[NUM]]{{$}}

            
            define float @call_indirect_float(float ()* %callee) {

            
              %t = call float %callee()

            
              ret float %t

            
            }


            ; CHECK-LABEL: call_indirect_double:

            
            ; CHECK-NEXT: .functype call_indirect_double (i32) -> (f64){{$}}

            
            ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}

            
            ; CHECK-NEXT: {{^}} f64.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}

            
            ; CHECK-NEXT: return $pop[[NUM]]{{$}}

            
            define double @call_indirect_double(double ()* %callee) {

            
              %t = call double %callee()

            
              ret double %t

            
            }


            ; CHECK-LABEL: call_indirect_v128:

            
            ; CHECK-NEXT: .functype call_indirect_v128 (i32) -> (v128){{$}}

            
            ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}

            
            ; CHECK-NEXT: {{^}} v128.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}

            
            ; CHECK-NEXT: return $pop[[NUM]]{{$}}

            
            define <16 x i8> @call_indirect_v128(<16 x i8> ()* %callee) {

            
              %t = call <16 x i8> %callee()

            
              ret <16 x i8> %t

            
            }


            ; CHECK-LABEL: call_indirect_arg:

            
            ; CHECK-NEXT: .functype call_indirect_arg (i32, i32) -> (){{$}}

            
            ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 1{{$}}

            
            ; CHECK-NEXT: local.get $push[[L1:[0-9]+]]=, 0{{$}}

            
            ; CHECK-NEXT: {{^}} call_indirect $pop[[L0]], $pop[[L1]]{{$}}

            
            ; CHECK-NEXT: return{{$}}

            
            define void @call_indirect_arg(void (i32)* %callee, i32 %arg) {

            
              call void %callee(i32 %arg)

            
              ret void

            
            }


            ; CHECK-LABEL: call_indirect_arg_2:

            
            ; CHECK-NEXT: .functype call_indirect_arg_2 (i32, i32, i32) -> (){{$}}

            
            ; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 1{{$}}

            
            ; CHECK-NEXT: local.get $push[[L1:[0-9]+]]=, 2{{$}}

            
            ; CHECK-NEXT: local.get $push[[L2:[0-9]+]]=, 0{{$}}

            
            ; CHECK-NEXT: {{^}} i32.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]], $pop[[L1]], $pop[[L2]]{{$}}

            
            ; CHECK-NEXT: drop $pop[[NUM]]{{$}}

            
            ; CHECK-NEXT: return{{$}}

            
            define void @call_indirect_arg_2(i32 (i32, i32)* %callee, i32 %arg, i32 %arg2) {

            
              call i32 %callee(i32 %arg, i32 %arg2)

            
              ret void

            
            }


            ; CHECK-LABEL: tail_call_void_nullary:

            
            ; CHECK-NEXT: .functype tail_call_void_nullary () -> (){{$}}

            
            ; NO-TAIL-NEXT: {{^}} call void_nullary{{$}}

            
            ; NO-TAIL-NEXT: return{{$}}

            
            ; SLOW-TAIL-NEXT: {{^}} return_call void_nullary{{$}}

            
            ; FAST-TAIL-NEXT: {{^}} call void_nullary{{$}}

            
            ; FAST-TAIL-NEXT: return{{$}}

            
            define void @tail_call_void_nullary() {

            
              tail call void @void_nullary()

            
              ret void

            
            }


            ; CHECK-LABEL: fastcc_tail_call_void_nullary:

            
            ; CHECK-NEXT: .functype fastcc_tail_call_void_nullary () -> (){{$}}

            
            ; NO-TAIL-NEXT: {{^}} call void_nullary{{$}}

            
            ; NO-TAIL-NEXT: return{{$}}

            
            ; SLOW-TAIL-NEXT: {{^}} return_call void_nullary{{$}}

            
            ; FAST-TAIL-NEXT: {{^}} call void_nullary{{$}}

            
            ; FAST-TAIL-NEXT: return{{$}}

            
            define void @fastcc_tail_call_void_nullary() {

            
              tail call fastcc void @void_nullary()

            
              ret void

            
            }


            ; CHECK-LABEL: coldcc_tail_call_void_nullary:

            
            ; CHECK-NEXT: .functype coldcc_tail_call_void_nullary () -> (){{$}}

            
            ; NO-TAIL-NEXT: {{^}} call void_nullary{{$}}

            
            ; NO-TAIL-NEXT: return{{$}}

            
            ; SLOW-TAIL-NEXT: {{^}} return_call void_nullary{{$}}

            
            ; FAST-TAIL-NEXT: {{^}} call void_nullary{{$}}

            
            ; FAST-TAIL-NEXT: return{{$}}

            
            define void @coldcc_tail_call_void_nullary() {

            
              tail call coldcc void @void_nullary()

            
              ret void

            
            }


            ; CHECK-LABEL: call_constexpr:

            
            ; CHECK-NEXT: .functype call_constexpr () -> (){{$}}

            
            ; CHECK-NEXT: i32.const $push[[L0:[0-9]+]]=, 2{{$}}

            
            ; CHECK-NEXT: i32.const $push[[L1:[0-9]+]]=, 3{{$}}

            
            ; CHECK-NEXT: call .Lvararg_func_bitcast, $pop[[L0]], $pop[[L1]]{{$}}

            
            ; CHECK-NEXT: call other_void_nullary{{$}}

            
            ; CHECK-NEXT: call void_nullary{{$}}

            
            ; CHECK-NEXT: return{{$}}

            
            declare void @vararg_func(...)

            
            declare void @other_void_nullary()

            
            define void @call_constexpr() {

            
            bb0:

            
              call void bitcast (void (...)* @vararg_func to void (i32, i32)*)(i32 2, i32 3)

            
              br label %bb1

            
            bb1:

            
              call void select (i1 0, void ()* @void_nullary, void ()* @other_void_nullary)()

            
              br label %bb2

            
            bb2:

            
              call void inttoptr (i32 ptrtoint (void ()* @void_nullary to i32) to void ()*)()

            
              ret void

            
            }


            ; TODO: test the following:

            
            ;  - More argument combinations.

            
            ;  - Tail call.

            
            ;  - Interesting returns (struct, multiple).

            
            ;  - Vararg.
	; 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
	; 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
	; 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
	; 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

	; Test that basic call operations assemble as expected.

	target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
	target triple = "wasm32-unknown-unknown"

	declare i32 @i32_nullary()
	declare i32 @i32_unary(i32)
	declare i32 @i32_binary(i32, i32)
	declare i64 @i64_nullary()
	declare float @float_nullary()
	declare double @double_nullary()
	declare <16 x i8> @v128_nullary()
	declare void @void_nullary()

	; CHECK-LABEL: call_i32_nullary:
	; CHECK-NEXT: .functype call_i32_nullary () -> (i32){{$}}
	; CHECK-NEXT: {{^}} i32.call $push[[NUM:[0-9]+]]=, i32_nullary{{$}}
	; CHECK-NEXT: return $pop[[NUM]]{{$}}
	define i32 @call_i32_nullary() {
	%r = call i32 @i32_nullary()
	ret i32 %r
	}

	; CHECK-LABEL: call_i64_nullary:
	; CHECK-NEXT: .functype call_i64_nullary () -> (i64){{$}}
	; CHECK-NEXT: {{^}} i64.call $push[[NUM:[0-9]+]]=, i64_nullary{{$}}
	; CHECK-NEXT: return $pop[[NUM]]{{$}}
	define i64 @call_i64_nullary() {
	%r = call i64 @i64_nullary()
	ret i64 %r
	}

	; CHECK-LABEL: call_float_nullary:
	; CHECK-NEXT: .functype call_float_nullary () -> (f32){{$}}
	; CHECK-NEXT: {{^}} f32.call $push[[NUM:[0-9]+]]=, float_nullary{{$}}
	; CHECK-NEXT: return $pop[[NUM]]{{$}}
	define float @call_float_nullary() {
	%r = call float @float_nullary()
	ret float %r
	}

	; CHECK-LABEL: call_double_nullary:
	; CHECK-NEXT: .functype call_double_nullary () -> (f64){{$}}
	; CHECK-NEXT: {{^}} f64.call $push[[NUM:[0-9]+]]=, double_nullary{{$}}
	; CHECK-NEXT: return $pop[[NUM]]{{$}}
	define double @call_double_nullary() {
	%r = call double @double_nullary()
	ret double %r
	}

	; CHECK-LABEL: call_v128_nullary:
	; CHECK-NEXT: .functype call_v128_nullary () -> (v128){{$}}
	; CHECK-NEXT: {{^}} v128.call $push[[NUM:[0-9]+]]=, v128_nullary{{$}}
	; CHECK-NEXT: return $pop[[NUM]]{{$}}
	define <16 x i8> @call_v128_nullary() {
	%r = call <16 x i8> @v128_nullary()
	ret <16 x i8> %r
	}

	; CHECK-LABEL: call_void_nullary:
	; CHECK-NEXT: .functype call_void_nullary () -> (){{$}}
	; CHECK-NEXT: {{^}} call void_nullary{{$}}
	; CHECK-NEXT: return{{$}}
	define void @call_void_nullary() {
	call void @void_nullary()
	ret void
	}

	; CHECK-LABEL: call_i32_unary:
	; CHECK-NEXT: .functype call_i32_unary (i32) -> (i32){{$}}
	; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
	; CHECK-NEXT: {{^}} i32.call $push[[NUM:[0-9]+]]=, i32_unary, $pop[[L0]]{{$}}
	; CHECK-NEXT: return $pop[[NUM]]{{$}}
	define i32 @call_i32_unary(i32 %a) {
	%r = call i32 @i32_unary(i32 %a)
	ret i32 %r
	}

	; CHECK-LABEL: call_i32_binary:
	; CHECK-NEXT: .functype call_i32_binary (i32, i32) -> (i32){{$}}
	; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
	; CHECK-NEXT: local.get $push[[L1:[0-9]+]]=, 1{{$}}
	; CHECK-NEXT: {{^}} i32.call $push[[NUM:[0-9]+]]=, i32_binary, $pop[[L0]], $pop[[L1]]{{$}}
	; CHECK-NEXT: return $pop[[NUM]]{{$}}
	define i32 @call_i32_binary(i32 %a, i32 %b) {
	%r = call i32 @i32_binary(i32 %a, i32 %b)
	ret i32 %r
	}

	; CHECK-LABEL: call_indirect_void:
	; CHECK-NEXT: .functype call_indirect_void (i32) -> (){{$}}
	; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
	; CHECK-NEXT: {{^}} call_indirect $pop[[L0]]{{$}}
	; CHECK-NEXT: return{{$}}
	define void @call_indirect_void(void ()* %callee) {
	call void %callee()
	ret void
	}

	; CHECK-LABEL: call_indirect_i32:
	; CHECK-NEXT: .functype call_indirect_i32 (i32) -> (i32){{$}}
	; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
	; CHECK-NEXT: {{^}} i32.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}
	; CHECK-NEXT: return $pop[[NUM]]{{$}}
	define i32 @call_indirect_i32(i32 ()* %callee) {
	%t = call i32 %callee()
	ret i32 %t
	}

	; CHECK-LABEL: call_indirect_i64:
	; CHECK-NEXT: .functype call_indirect_i64 (i32) -> (i64){{$}}
	; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
	; CHECK-NEXT: {{^}} i64.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}
	; CHECK-NEXT: return $pop[[NUM]]{{$}}
	define i64 @call_indirect_i64(i64 ()* %callee) {
	%t = call i64 %callee()
	ret i64 %t
	}

	; CHECK-LABEL: call_indirect_float:
	; CHECK-NEXT: .functype call_indirect_float (i32) -> (f32){{$}}
	; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
	; CHECK-NEXT: {{^}} f32.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}
	; CHECK-NEXT: return $pop[[NUM]]{{$}}
	define float @call_indirect_float(float ()* %callee) {
	%t = call float %callee()
	ret float %t
	}

	; CHECK-LABEL: call_indirect_double:
	; CHECK-NEXT: .functype call_indirect_double (i32) -> (f64){{$}}
	; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
	; CHECK-NEXT: {{^}} f64.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}
	; CHECK-NEXT: return $pop[[NUM]]{{$}}
	define double @call_indirect_double(double ()* %callee) {
	%t = call double %callee()
	ret double %t
	}

	; CHECK-LABEL: call_indirect_v128:
	; CHECK-NEXT: .functype call_indirect_v128 (i32) -> (v128){{$}}
	; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 0{{$}}
	; CHECK-NEXT: {{^}} v128.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}
	; CHECK-NEXT: return $pop[[NUM]]{{$}}
	define <16 x i8> @call_indirect_v128(<16 x i8> ()* %callee) {
	%t = call <16 x i8> %callee()
	ret <16 x i8> %t
	}

	; CHECK-LABEL: call_indirect_arg:
	; CHECK-NEXT: .functype call_indirect_arg (i32, i32) -> (){{$}}
	; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 1{{$}}
	; CHECK-NEXT: local.get $push[[L1:[0-9]+]]=, 0{{$}}
	; CHECK-NEXT: {{^}} call_indirect $pop[[L0]], $pop[[L1]]{{$}}
	; CHECK-NEXT: return{{$}}
	define void @call_indirect_arg(void (i32)* %callee, i32 %arg) {
	call void %callee(i32 %arg)
	ret void
	}

	; CHECK-LABEL: call_indirect_arg_2:
	; CHECK-NEXT: .functype call_indirect_arg_2 (i32, i32, i32) -> (){{$}}
	; CHECK-NEXT: local.get $push[[L0:[0-9]+]]=, 1{{$}}
	; CHECK-NEXT: local.get $push[[L1:[0-9]+]]=, 2{{$}}
	; CHECK-NEXT: local.get $push[[L2:[0-9]+]]=, 0{{$}}
	; CHECK-NEXT: {{^}} i32.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]], $pop[[L1]], $pop[[L2]]{{$}}
	; CHECK-NEXT: drop $pop[[NUM]]{{$}}
	; CHECK-NEXT: return{{$}}
	define void @call_indirect_arg_2(i32 (i32, i32)* %callee, i32 %arg, i32 %arg2) {
	call i32 %callee(i32 %arg, i32 %arg2)
	ret void
	}

	; CHECK-LABEL: tail_call_void_nullary:
	; CHECK-NEXT: .functype tail_call_void_nullary () -> (){{$}}
	; NO-TAIL-NEXT: {{^}} call void_nullary{{$}}
	; NO-TAIL-NEXT: return{{$}}
	; SLOW-TAIL-NEXT: {{^}} return_call void_nullary{{$}}
	; FAST-TAIL-NEXT: {{^}} call void_nullary{{$}}
	; FAST-TAIL-NEXT: return{{$}}
	define void @tail_call_void_nullary() {
	tail call void @void_nullary()
	ret void
	}

	; CHECK-LABEL: fastcc_tail_call_void_nullary:
	; CHECK-NEXT: .functype fastcc_tail_call_void_nullary () -> (){{$}}
	; NO-TAIL-NEXT: {{^}} call void_nullary{{$}}
	; NO-TAIL-NEXT: return{{$}}
	; SLOW-TAIL-NEXT: {{^}} return_call void_nullary{{$}}
	; FAST-TAIL-NEXT: {{^}} call void_nullary{{$}}
	; FAST-TAIL-NEXT: return{{$}}
	define void @fastcc_tail_call_void_nullary() {
	tail call fastcc void @void_nullary()
	ret void
	}

	; CHECK-LABEL: coldcc_tail_call_void_nullary:
	; CHECK-NEXT: .functype coldcc_tail_call_void_nullary () -> (){{$}}
	; NO-TAIL-NEXT: {{^}} call void_nullary{{$}}
	; NO-TAIL-NEXT: return{{$}}
	; SLOW-TAIL-NEXT: {{^}} return_call void_nullary{{$}}
	; FAST-TAIL-NEXT: {{^}} call void_nullary{{$}}
	; FAST-TAIL-NEXT: return{{$}}
	define void @coldcc_tail_call_void_nullary() {
	tail call coldcc void @void_nullary()
	ret void
	}

	; CHECK-LABEL: call_constexpr:
	; CHECK-NEXT: .functype call_constexpr () -> (){{$}}
	; CHECK-NEXT: i32.const $push[[L0:[0-9]+]]=, 2{{$}}
	; CHECK-NEXT: i32.const $push[[L1:[0-9]+]]=, 3{{$}}
	; CHECK-NEXT: call .Lvararg_func_bitcast, $pop[[L0]], $pop[[L1]]{{$}}
	; CHECK-NEXT: call other_void_nullary{{$}}
	; CHECK-NEXT: call void_nullary{{$}}
	; CHECK-NEXT: return{{$}}
	declare void @vararg_func(...)
	declare void @other_void_nullary()
	define void @call_constexpr() {
	bb0:
	call void bitcast (void (...)* @vararg_func to void (i32, i32)*)(i32 2, i32 3)
	br label %bb1
	bb1:
	call void select (i1 0, void ()* @void_nullary, void ()* @other_void_nullary)()
	br label %bb2
	bb2:
	call void inttoptr (i32 ptrtoint (void ()* @void_nullary to i32) to void ()*)()
	ret void
	}

	; TODO: test the following:
	; - More argument combinations.
	; - Tail call.
	; - Interesting returns (struct, multiple).
	; - Vararg.