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; RUN: llc < %s -asm-verbose=false -verify-machineinstrs | FileCheck %s
; Test varargs constructs.
target datalayout = "e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown"
; Test va_start.
; TODO: Test va_start.
;define void @start(i8** %ap, ...) {
;entry:
; %0 = bitcast i8** %ap to i8*
; 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 $discard=, 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{{$}}
; CHECK-NEXT: .local i32{{$}}
; CHECK-NEXT: i32.load $1=, 0($0){{$}}
; CHECK-NEXT: i32.const $push0=, 4{{$}}
; CHECK-NEXT: i32.add $push1=, $1, $pop0{{$}}
; CHECK-NEXT: i32.store $discard=, 0($0), $pop1{{$}}
; CHECK-NEXT: i32.load $push2=, 0($1){{$}}
; CHECK-NEXT: return $pop2{{$}}
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: .local i32{{$}}
; CHECK-NEXT: i32.load $push0=, 0($0){{$}}
; CHECK-NEXT: i32.const $push1=, 3{{$}}
; CHECK-NEXT: i32.add $push2=, $pop0, $pop1{{$}}
; CHECK-NEXT: i32.const $push3=, -4{{$}}
; CHECK-NEXT: i32.and $1=, $pop2, $pop3{{$}}
; CHECK-NEXT: i32.const $push4=, 4{{$}}
; CHECK-NEXT: i32.add $push5=, $1, $pop4{{$}}
; CHECK-NEXT: i32.store $discard=, 0($0), $pop5{{$}}
; CHECK-NEXT: i32.load $push6=, 0($1){{$}}
; CHECK-NEXT: return $pop6{{$}}
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{{$}}
; CHECK-NEXT: .local
; CHECK: i32.and
; CHECK: i64.load
; CHECK: i64.load
; CHECK: return{{$}}
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: call callee{{$}}
; CHECK-NEXT: return{{$}}
define void @caller_none() {
call void (...) @callee()
ret void
}
; CHECK-LABEL: caller_some
define void @caller_some() {
; TODO: Fix interaction between register coalescer and reg stackifier,
; or disable coalescer.
;call void (...) @callee(i32 0, double 2.0)
ret void
}
declare void @llvm.va_start(i8*)
declare void @llvm.va_end(i8*)
declare void @llvm.va_copy(i8*, i8*)
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