171 lines
4.8 KiB
LLVM
171 lines
4.8 KiB
LLVM
; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers -verify-machineinstrs | FileCheck %s
|
|
|
|
; Test varargs constructs.
|
|
|
|
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
|
|
target triple = "wasm32-unknown-unknown"
|
|
|
|
; Test va_start.
|
|
|
|
; TODO: Test va_start.
|
|
; CHECK-LABEL: start:
|
|
; CHECK-NEXT: .param i32, i32
|
|
; CHECK-NOT: __stack_pointer
|
|
define void @start(i8** %ap, ...) {
|
|
entry:
|
|
%0 = bitcast i8** %ap to i8*
|
|
; Store the second argument (the hidden vararg buffer pointer) into ap
|
|
; CHECK: i32.store 0($0), $1
|
|
call void @llvm.va_start(i8* %0)
|
|
ret void
|
|
}
|
|
|
|
; Test va_end.
|
|
|
|
; CHECK-LABEL: end:
|
|
; CHECK-NEXT: .param i32{{$}}
|
|
; CHECK-NEXT: return{{$}}
|
|
define void @end(i8** %ap) {
|
|
entry:
|
|
%0 = bitcast i8** %ap to i8*
|
|
call void @llvm.va_end(i8* %0)
|
|
ret void
|
|
}
|
|
|
|
; Test va_copy.
|
|
|
|
; CHECK-LABEL: copy:
|
|
; CHECK-NEXT: .param i32, i32{{$}}
|
|
; CHECK-NEXT: i32.load $push0=, 0($1){{$}}
|
|
; CHECK-NEXT: i32.store 0($0), $pop0{{$}}
|
|
; CHECK-NEXT: return{{$}}
|
|
define void @copy(i8** %ap, i8** %bp) {
|
|
entry:
|
|
%0 = bitcast i8** %ap to i8*
|
|
%1 = bitcast i8** %bp to i8*
|
|
call void @llvm.va_copy(i8* %0, i8* %1)
|
|
ret void
|
|
}
|
|
|
|
; Test va_arg with an i8 argument.
|
|
|
|
; CHECK-LABEL: arg_i8:
|
|
; CHECK-NEXT: .param i32{{$}}
|
|
; CHECK-NEXT: .result i32{{$}}
|
|
; CHECK-NEXT: i32.load $push[[NUM0:[0-9]+]]=, 0($0){{$}}
|
|
; CHECK-NEXT: tee_local $push[[NUM1:[0-9]+]]=, $1=, $pop[[NUM0]]{{$}}
|
|
; CHECK-NEXT: i32.const $push[[NUM2:[0-9]+]]=, 4{{$}}
|
|
; CHECK-NEXT: i32.add $push[[NUM3:[0-9]+]]=, $pop[[NUM1]], $pop[[NUM2]]{{$}}
|
|
; CHECK-NEXT: i32.store 0($0), $pop[[NUM3]]{{$}}
|
|
; CHECK-NEXT: i32.load $push[[NUM4:[0-9]+]]=, 0($1){{$}}
|
|
; CHECK-NEXT: return $pop[[NUM4]]{{$}}
|
|
define i8 @arg_i8(i8** %ap) {
|
|
entry:
|
|
%t = va_arg i8** %ap, i8
|
|
ret i8 %t
|
|
}
|
|
|
|
; Test va_arg with an i32 argument.
|
|
|
|
; CHECK-LABEL: arg_i32:
|
|
; CHECK-NEXT: .param i32{{$}}
|
|
; CHECK-NEXT: .result i32{{$}}
|
|
; CHECK-NEXT: i32.load $push[[NUM0:[0-9]+]]=, 0($0){{$}}
|
|
; CHECK-NEXT: i32.const $push[[NUM1:[0-9]+]]=, 3{{$}}
|
|
; CHECK-NEXT: i32.add $push[[NUM2:[0-9]+]]=, $pop[[NUM0]], $pop[[NUM1]]{{$}}
|
|
; CHECK-NEXT: i32.const $push[[NUM3:[0-9]+]]=, -4{{$}}
|
|
; CHECK-NEXT: i32.and $push[[NUM4:[0-9]+]]=, $pop[[NUM2]], $pop[[NUM3]]{{$}}
|
|
; CHECK-NEXT: tee_local $push[[NUM5:[0-9]+]]=, $1=, $pop[[NUM4]]{{$}}
|
|
; CHECK-NEXT: i32.const $push[[NUM6:[0-9]+]]=, 4{{$}}
|
|
; CHECK-NEXT: i32.add $push[[NUM7:[0-9]+]]=, $pop[[NUM5]], $pop[[NUM6]]{{$}}
|
|
; CHECK-NEXT: i32.store 0($0), $pop[[NUM7]]{{$}}
|
|
; CHECK-NEXT: i32.load $push[[NUM8:[0-9]+]]=, 0($1){{$}}
|
|
; CHECK-NEXT: return $pop[[NUM8]]{{$}}
|
|
define i32 @arg_i32(i8** %ap) {
|
|
entry:
|
|
%t = va_arg i8** %ap, i32
|
|
ret i32 %t
|
|
}
|
|
|
|
; Test va_arg with an i128 argument.
|
|
|
|
; CHECK-LABEL: arg_i128:
|
|
; CHECK-NEXT: .param i32, i32{{$}}
|
|
; CHECK: i32.and
|
|
; CHECK: i64.load
|
|
; CHECK: i64.load
|
|
; CHECK: return{{$}}
|
|
define i128 @arg_i128(i8** %ap) {
|
|
entry:
|
|
%t = va_arg i8** %ap, i128
|
|
ret i128 %t
|
|
}
|
|
|
|
; Test a varargs call with no actual arguments.
|
|
|
|
declare void @callee(...)
|
|
|
|
; CHECK-LABEL: caller_none:
|
|
; CHECK-NEXT: i32.const $push0=, 0
|
|
; CHECK-NEXT: call callee@FUNCTION, $pop0
|
|
; CHECK-NEXT: return{{$}}
|
|
define void @caller_none() {
|
|
call void (...) @callee()
|
|
ret void
|
|
}
|
|
|
|
; Test a varargs call with some actual arguments.
|
|
; Note that the store of 2.0 is converted to an i64 store; this optimization
|
|
; is not needed on WebAssembly, but there isn't currently a convenient hook for
|
|
; disabling it.
|
|
|
|
; CHECK-LABEL: caller_some
|
|
; CHECK-DAG: i32.store
|
|
; CHECK-DAG: i64.store
|
|
define void @caller_some() {
|
|
call void (...) @callee(i32 0, double 2.0)
|
|
ret void
|
|
}
|
|
|
|
; Test a va_start call in a non-entry block
|
|
; CHECK-LABEL: startbb:
|
|
; CHECK: .param i32, i32, i32
|
|
define void @startbb(i1 %cond, i8** %ap, ...) {
|
|
entry:
|
|
br i1 %cond, label %bb0, label %bb1
|
|
bb0:
|
|
ret void
|
|
bb1:
|
|
%0 = bitcast i8** %ap to i8*
|
|
; Store the second argument (the hidden vararg buffer pointer) into ap
|
|
; CHECK: i32.store 0($1), $2
|
|
call void @llvm.va_start(i8* %0)
|
|
ret void
|
|
}
|
|
|
|
; Test a call to a varargs function with a non-legal fixed argument.
|
|
|
|
declare void @callee_with_nonlegal_fixed(fp128, ...) nounwind
|
|
|
|
; CHECK-LABEL: call_nonlegal_fixed:
|
|
; CHECK: i64.const $push[[L0:[0-9]+]]=, 0
|
|
; CHECK: i64.const $push[[L1:[0-9]+]]=, 0
|
|
; CHECK: i32.const $push[[L2:[0-9]+]]=, 0
|
|
; CHECK: call callee_with_nonlegal_fixed@FUNCTION, $pop[[L0]], $pop[[L1]], $pop[[L2]]{{$}}
|
|
define void @call_nonlegal_fixed() nounwind {
|
|
call void (fp128, ...) @callee_with_nonlegal_fixed(fp128 0xL00000000000000000000000000000000)
|
|
ret void
|
|
}
|
|
|
|
; Test a definition a varargs function with a non-legal fixed argument.
|
|
|
|
; CHECK-LABEL: nonlegal_fixed:
|
|
; CHECK-NEXT: .param i64, i64, i32{{$}}
|
|
define void @nonlegal_fixed(fp128 %x, ...) nounwind {
|
|
ret void
|
|
}
|
|
|
|
declare void @llvm.va_start(i8*)
|
|
declare void @llvm.va_end(i8*)
|
|
declare void @llvm.va_copy(i8*, i8*)
|