forked from OSchip/llvm-project
124 lines
2.9 KiB
LLVM
124 lines
2.9 KiB
LLVM
; RUN: llc < %s -asm-verbose=false -verify-machineinstrs | FileCheck %s
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; Test varargs constructs.
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown"
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; Test va_start.
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; TODO: Test va_start.
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;define void @start(i8** %ap, ...) {
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;entry:
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; %0 = bitcast i8** %ap to i8*
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; call void @llvm.va_start(i8* %0)
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; ret void
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;}
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; Test va_end.
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; CHECK-LABEL: end:
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; CHECK-NEXT: .param i32{{$}}
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; CHECK-NEXT: return{{$}}
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define void @end(i8** %ap) {
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entry:
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%0 = bitcast i8** %ap to i8*
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call void @llvm.va_end(i8* %0)
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ret void
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}
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; Test va_copy.
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; CHECK-LABEL: copy:
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; CHECK-NEXT: .param i32, i32{{$}}
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; CHECK-NEXT: i32.load $push0=, 0($1){{$}}
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; CHECK-NEXT: i32.store $discard=, 0($0), $pop0{{$}}
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; CHECK-NEXT: return{{$}}
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define void @copy(i8** %ap, i8** %bp) {
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entry:
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%0 = bitcast i8** %ap to i8*
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%1 = bitcast i8** %bp to i8*
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call void @llvm.va_copy(i8* %0, i8* %1)
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ret void
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}
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; Test va_arg with an i8 argument.
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; CHECK-LABEL: arg_i8:
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; CHECK-NEXT: .param i32{{$}}
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; CHECK-NEXT: .result i32{{$}}
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; CHECK-NEXT: .local i32{{$}}
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; CHECK-NEXT: i32.load $1=, 0($0){{$}}
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; CHECK-NEXT: i32.const $push0=, 4{{$}}
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; CHECK-NEXT: i32.add $push1=, $1, $pop0{{$}}
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; CHECK-NEXT: i32.store $discard=, 0($0), $pop1{{$}}
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; CHECK-NEXT: i32.load $push2=, 0($1){{$}}
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; CHECK-NEXT: return $pop2{{$}}
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define i8 @arg_i8(i8** %ap) {
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entry:
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%t = va_arg i8** %ap, i8
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ret i8 %t
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}
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; Test va_arg with an i32 argument.
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; CHECK-LABEL: arg_i32:
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; CHECK-NEXT: .param i32{{$}}
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; CHECK-NEXT: .result i32{{$}}
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; CHECK-NEXT: .local i32{{$}}
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; CHECK-NEXT: i32.load $push0=, 0($0){{$}}
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; CHECK-NEXT: i32.const $push1=, 3{{$}}
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; CHECK-NEXT: i32.add $push2=, $pop0, $pop1{{$}}
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; CHECK-NEXT: i32.const $push3=, -4{{$}}
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; CHECK-NEXT: i32.and $1=, $pop2, $pop3{{$}}
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; CHECK-NEXT: i32.const $push4=, 4{{$}}
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; CHECK-NEXT: i32.add $push5=, $1, $pop4{{$}}
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; CHECK-NEXT: i32.store $discard=, 0($0), $pop5{{$}}
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; CHECK-NEXT: i32.load $push6=, 0($1){{$}}
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; CHECK-NEXT: return $pop6{{$}}
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define i32 @arg_i32(i8** %ap) {
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entry:
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%t = va_arg i8** %ap, i32
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ret i32 %t
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}
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; Test va_arg with an i128 argument.
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; CHECK-LABEL: arg_i128:
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; CHECK-NEXT: .param i32, i32{{$}}
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; CHECK-NEXT: .local
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; CHECK: i32.and
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; CHECK: i64.load
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; CHECK: i64.load
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; CHECK: return{{$}}
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define i128 @arg_i128(i8** %ap) {
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entry:
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%t = va_arg i8** %ap, i128
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ret i128 %t
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}
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; Test a varargs call with no actual arguments.
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declare void @callee(...)
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; CHECK-LABEL: caller_none:
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; CHECK-NEXT: call callee@FUNCTION{{$}}
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; CHECK-NEXT: return{{$}}
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define void @caller_none() {
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call void (...) @callee()
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ret void
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}
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; CHECK-LABEL: caller_some
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define void @caller_some() {
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; TODO: Fix interaction between register coalescer and reg stackifier,
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; or disable coalescer.
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;call void (...) @callee(i32 0, double 2.0)
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ret void
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}
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declare void @llvm.va_start(i8*)
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declare void @llvm.va_end(i8*)
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declare void @llvm.va_copy(i8*, i8*)
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