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//===- AsmStreamerTest.cpp - Triple unit tests ----------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "gtest/gtest.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
namespace {
// Helper class.
class StringAsmStreamer {
std::string Str;
raw_string_ostream OS;
MCContext Context;
MCStreamer *Streamer;
public:
StringAsmStreamer() : OS(Str), Streamer(createAsmStreamer(Context, OS)) {}
~StringAsmStreamer() {
delete Streamer;
}
MCContext &getContext() { return Context; }
MCStreamer &getStreamer() { return *Streamer; }
const std::string &getString() {
Streamer->Finish();
return Str;
}
};
TEST(AsmStreamer, EmptyOutput) {
StringAsmStreamer S;
EXPECT_EQ(S.getString(), "");
}
TEST(AsmStreamer, Sections) {
StringAsmStreamer S;
MCSection *Sec0 = S.getContext().GetSection("foo");
S.getStreamer().SwitchSection(Sec0);
EXPECT_EQ(S.getString(), ".section foo\n");
}
TEST(AsmStreamer, Values) {
StringAsmStreamer S;
MCSection *Sec0 = S.getContext().GetSection("foo");
MCSymbol *A = S.getContext().CreateSymbol("a");
MCSymbol *B = S.getContext().CreateSymbol("b");
S.getStreamer().SwitchSection(Sec0);
S.getStreamer().EmitLabel(A);
S.getStreamer().EmitLabel(B);
S.getStreamer().EmitValue(MCValue::get(A, B, 10), 1);
S.getStreamer().EmitValue(MCValue::get(A, B, 10), 2);
S.getStreamer().EmitValue(MCValue::get(A, B, 10), 4);
S.getStreamer().EmitValue(MCValue::get(A, B, 10), 8);
EXPECT_EQ(S.getString(), ".section foo\n\
a:\n\
b:\n\
.byte a - b + 10\n\
.short a - b + 10\n\
.long a - b + 10\n\
.quad a - b + 10\n\
");
}
TEST(AsmStreamer, Align) {
StringAsmStreamer S;
MCSection *Sec0 = S.getContext().GetSection("foo");
S.getStreamer().SwitchSection(Sec0);
S.getStreamer().EmitValueToAlignment(4);
S.getStreamer().EmitValueToAlignment(4, /*Value=*/12, /*ValueSize=*/2);
S.getStreamer().EmitValueToAlignment(8, /*Value=*/12, /*ValueSize=*/4,
/*MaxBytesToEmit=*/24);
EXPECT_EQ(S.getString(), ".section foo\n\
.p2align 2, 0\n\
.p2alignw 2, 12\n\
.p2alignl 3, 12, 24\n\
");
}
TEST(AsmStreamer, Org) {
StringAsmStreamer S;
MCSection *Sec0 = S.getContext().GetSection("foo");
S.getStreamer().SwitchSection(Sec0);
MCSymbol *A = S.getContext().CreateSymbol("a");
S.getStreamer().EmitLabel(A);
S.getStreamer().EmitValueToOffset(MCValue::get(A, 0, 4), 32);
EXPECT_EQ(S.getString(), ".section foo\n\
a:\n\
.org a + 4, 32\n\
");
}
}
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