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