Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

1 files changed, 644 insertions, 0 deletions

diff --git a/gnu/llvm/clang/unittests/Basic/FixedPointTest.cpp b/gnu/llvm/clang/unittests/Basic/FixedPointTest.cpp
new file mode 100644
index 00000000000..5d991c07203
--- /dev/null
+++ b/gnu/llvm/clang/unittests/Basic/FixedPointTest.cpp
@@ -0,0 +1,644 @@
+//===- unittests/Basic/FixedPointTest.cpp -- fixed point number tests -----===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Basic/FixedPoint.h"
+#include "llvm/ADT/APSInt.h"
+#include "gtest/gtest.h"
+
+using clang::APFixedPoint;
+using clang::FixedPointSemantics;
+using llvm::APInt;
+using llvm::APSInt;
+
+namespace {
+
+FixedPointSemantics Saturated(FixedPointSemantics Sema) {
+  Sema.setSaturated(true);
+  return Sema;
+}
+
+FixedPointSemantics getSAccumSema() {
+  return FixedPointSemantics(/*width=*/16, /*scale=*/7, /*isSigned=*/true,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/false);
+}
+
+FixedPointSemantics getAccumSema() {
+  return FixedPointSemantics(/*width=*/32, /*scale=*/15, /*isSigned=*/true,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/false);
+}
+
+FixedPointSemantics getLAccumSema() {
+  return FixedPointSemantics(/*width=*/64, /*scale=*/31, /*isSigned=*/true,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/false);
+}
+
+FixedPointSemantics getSFractSema() {
+  return FixedPointSemantics(/*width=*/8, /*scale=*/7, /*isSigned=*/true,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/false);
+}
+
+FixedPointSemantics getFractSema() {
+  return FixedPointSemantics(/*width=*/16, /*scale=*/15, /*isSigned=*/true,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/false);
+}
+
+FixedPointSemantics getLFractSema() {
+  return FixedPointSemantics(/*width=*/32, /*scale=*/31, /*isSigned=*/true,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/false);
+}
+
+FixedPointSemantics getUSAccumSema() {
+  return FixedPointSemantics(/*width=*/16, /*scale=*/8, /*isSigned=*/false,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/false);
+}
+
+FixedPointSemantics getUAccumSema() {
+  return FixedPointSemantics(/*width=*/32, /*scale=*/16, /*isSigned=*/false,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/false);
+}
+
+FixedPointSemantics getULAccumSema() {
+  return FixedPointSemantics(/*width=*/64, /*scale=*/32, /*isSigned=*/false,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/false);
+}
+
+FixedPointSemantics getUSFractSema() {
+  return FixedPointSemantics(/*width=*/8, /*scale=*/8, /*isSigned=*/false,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/false);
+}
+
+FixedPointSemantics getUFractSema() {
+  return FixedPointSemantics(/*width=*/16, /*scale=*/16, /*isSigned=*/false,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/false);
+}
+
+FixedPointSemantics getULFractSema() {
+  return FixedPointSemantics(/*width=*/32, /*scale=*/32, /*isSigned=*/false,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/false);
+}
+
+FixedPointSemantics getPadUSAccumSema() {
+  return FixedPointSemantics(/*width=*/16, /*scale=*/7, /*isSigned=*/false,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/true);
+}
+
+FixedPointSemantics getPadUAccumSema() {
+  return FixedPointSemantics(/*width=*/32, /*scale=*/15, /*isSigned=*/false,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/true);
+}
+
+FixedPointSemantics getPadULAccumSema() {
+  return FixedPointSemantics(/*width=*/64, /*scale=*/31, /*isSigned=*/false,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/true);
+}
+
+FixedPointSemantics getPadUSFractSema() {
+  return FixedPointSemantics(/*width=*/8, /*scale=*/7, /*isSigned=*/false,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/true);
+}
+
+FixedPointSemantics getPadUFractSema() {
+  return FixedPointSemantics(/*width=*/16, /*scale=*/15, /*isSigned=*/false,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/true);
+}
+
+FixedPointSemantics getPadULFractSema() {
+  return FixedPointSemantics(/*width=*/32, /*scale=*/31, /*isSigned=*/false,
+                             /*isSaturated=*/false,
+                             /*hasUnsignedPadding=*/true);
+}
+
+void CheckUnpaddedMax(const FixedPointSemantics &Sema) {
+  ASSERT_EQ(APFixedPoint::getMax(Sema).getValue(),
+            APSInt::getMaxValue(Sema.getWidth(), !Sema.isSigned()));
+}
+
+void CheckPaddedMax(const FixedPointSemantics &Sema) {
+  ASSERT_EQ(APFixedPoint::getMax(Sema).getValue(),
+            APSInt::getMaxValue(Sema.getWidth(), !Sema.isSigned()) >> 1);
+}
+
+void CheckMin(const FixedPointSemantics &Sema) {
+  ASSERT_EQ(APFixedPoint::getMin(Sema).getValue(),
+            APSInt::getMinValue(Sema.getWidth(), !Sema.isSigned()));
+}
+
+TEST(FixedPointTest, getMax) {
+  CheckUnpaddedMax(getSAccumSema());
+  CheckUnpaddedMax(getAccumSema());
+  CheckUnpaddedMax(getLAccumSema());
+  CheckUnpaddedMax(getUSAccumSema());
+  CheckUnpaddedMax(getUAccumSema());
+  CheckUnpaddedMax(getULAccumSema());
+  CheckUnpaddedMax(getSFractSema());
+  CheckUnpaddedMax(getFractSema());
+  CheckUnpaddedMax(getLFractSema());
+  CheckUnpaddedMax(getUSFractSema());
+  CheckUnpaddedMax(getUFractSema());
+  CheckUnpaddedMax(getULFractSema());
+
+  CheckPaddedMax(getPadUSAccumSema());
+  CheckPaddedMax(getPadUAccumSema());
+  CheckPaddedMax(getPadULAccumSema());
+  CheckPaddedMax(getPadUSFractSema());
+  CheckPaddedMax(getPadUFractSema());
+  CheckPaddedMax(getPadULFractSema());
+}
+
+TEST(FixedPointTest, getMin) {
+  CheckMin(getSAccumSema());
+  CheckMin(getAccumSema());
+  CheckMin(getLAccumSema());
+  CheckMin(getUSAccumSema());
+  CheckMin(getUAccumSema());
+  CheckMin(getULAccumSema());
+  CheckMin(getSFractSema());
+  CheckMin(getFractSema());
+  CheckMin(getLFractSema());
+  CheckMin(getUSFractSema());
+  CheckMin(getUFractSema());
+  CheckMin(getULFractSema());
+
+  CheckMin(getPadUSAccumSema());
+  CheckMin(getPadUAccumSema());
+  CheckMin(getPadULAccumSema());
+  CheckMin(getPadUSFractSema());
+  CheckMin(getPadUFractSema());
+  CheckMin(getPadULFractSema());
+}
+
+void CheckIntPart(const FixedPointSemantics &Sema, int64_t IntPart) {
+  unsigned Scale = Sema.getScale();
+
+  // Value with a fraction
+  APFixedPoint ValWithFract(APInt(Sema.getWidth(),
+                                  (IntPart << Scale) + (1ULL << (Scale - 1)),
+                                  Sema.isSigned()),
+                            Sema);
+  ASSERT_EQ(ValWithFract.getIntPart(), IntPart);
+
+  // Just fraction
+  APFixedPoint JustFract(
+      APInt(Sema.getWidth(), (1ULL << (Scale - 1)), Sema.isSigned()), Sema);
+  ASSERT_EQ(JustFract.getIntPart(), 0);
+
+  // Whole number
+  APFixedPoint WholeNum(
+      APInt(Sema.getWidth(), (IntPart << Scale), Sema.isSigned()), Sema);
+  ASSERT_EQ(WholeNum.getIntPart(), IntPart);
+
+  // Negative
+  if (Sema.isSigned()) {
+    APFixedPoint Negative(
+        APInt(Sema.getWidth(), (IntPart << Scale), Sema.isSigned()), Sema);
+    ASSERT_EQ(Negative.getIntPart(), IntPart);
+  }
+}
+
+void CheckIntPartMin(const FixedPointSemantics &Sema, int64_t Expected) {
+  ASSERT_EQ(APFixedPoint::getMin(Sema).getIntPart(), Expected);
+}
+
+void CheckIntPartMax(const FixedPointSemantics &Sema, uint64_t Expected) {
+  ASSERT_EQ(APFixedPoint::getMax(Sema).getIntPart(), Expected);
+}
+
+TEST(FixedPoint, getIntPart) {
+  // Normal values
+  CheckIntPart(getSAccumSema(), 2);
+  CheckIntPart(getAccumSema(), 2);
+  CheckIntPart(getLAccumSema(), 2);
+  CheckIntPart(getUSAccumSema(), 2);
+  CheckIntPart(getUAccumSema(), 2);
+  CheckIntPart(getULAccumSema(), 2);
+
+  // Zero
+  CheckIntPart(getSAccumSema(), 0);
+  CheckIntPart(getAccumSema(), 0);
+  CheckIntPart(getLAccumSema(), 0);
+  CheckIntPart(getUSAccumSema(), 0);
+  CheckIntPart(getUAccumSema(), 0);
+  CheckIntPart(getULAccumSema(), 0);
+
+  CheckIntPart(getSFractSema(), 0);
+  CheckIntPart(getFractSema(), 0);
+  CheckIntPart(getLFractSema(), 0);
+  CheckIntPart(getUSFractSema(), 0);
+  CheckIntPart(getUFractSema(), 0);
+  CheckIntPart(getULFractSema(), 0);
+
+  // Min
+  CheckIntPartMin(getSAccumSema(), -256);
+  CheckIntPartMin(getAccumSema(), -65536);
+  CheckIntPartMin(getLAccumSema(), -4294967296);
+
+  CheckIntPartMin(getSFractSema(), -1);
+  CheckIntPartMin(getFractSema(), -1);
+  CheckIntPartMin(getLFractSema(), -1);
+
+  // Max
+  CheckIntPartMax(getSAccumSema(), 255);
+  CheckIntPartMax(getAccumSema(), 65535);
+  CheckIntPartMax(getLAccumSema(), 4294967295);
+  CheckIntPartMax(getUSAccumSema(), 255);
+  CheckIntPartMax(getUAccumSema(), 65535);
+  CheckIntPartMax(getULAccumSema(), 4294967295);
+
+  CheckIntPartMax(getSFractSema(), 0);
+  CheckIntPartMax(getFractSema(), 0);
+  CheckIntPartMax(getLFractSema(), 0);
+  CheckIntPartMax(getUSFractSema(), 0);
+  CheckIntPartMax(getUFractSema(), 0);
+  CheckIntPartMax(getULFractSema(), 0);
+
+  // Padded
+  // Normal Values
+  CheckIntPart(getPadUSAccumSema(), 2);
+  CheckIntPart(getPadUAccumSema(), 2);
+  CheckIntPart(getPadULAccumSema(), 2);
+
+  // Zero
+  CheckIntPart(getPadUSAccumSema(), 0);
+  CheckIntPart(getPadUAccumSema(), 0);
+  CheckIntPart(getPadULAccumSema(), 0);
+
+  CheckIntPart(getPadUSFractSema(), 0);
+  CheckIntPart(getPadUFractSema(), 0);
+  CheckIntPart(getPadULFractSema(), 0);
+
+  // Max
+  CheckIntPartMax(getPadUSAccumSema(), 255);
+  CheckIntPartMax(getPadUAccumSema(), 65535);
+  CheckIntPartMax(getPadULAccumSema(), 4294967295);
+
+  CheckIntPartMax(getPadUSFractSema(), 0);
+  CheckIntPartMax(getPadUFractSema(), 0);
+  CheckIntPartMax(getPadULFractSema(), 0);
+}
+
+TEST(FixedPoint, compare) {
+  // Equality
+  // With fractional part (2.5)
+  // Across sizes
+  ASSERT_EQ(APFixedPoint(320, getSAccumSema()),
+            APFixedPoint(81920, getAccumSema()));
+  ASSERT_EQ(APFixedPoint(320, getSAccumSema()),
+            APFixedPoint(5368709120, getLAccumSema()));
+  ASSERT_EQ(APFixedPoint(0, getSAccumSema()), APFixedPoint(0, getLAccumSema()));
+
+  // Across types (0.5)
+  ASSERT_EQ(APFixedPoint(64, getSAccumSema()),
+            APFixedPoint(64, getSFractSema()));
+  ASSERT_EQ(APFixedPoint(16384, getAccumSema()),
+            APFixedPoint(16384, getFractSema()));
+  ASSERT_EQ(APFixedPoint(1073741824, getLAccumSema()),
+            APFixedPoint(1073741824, getLFractSema()));
+
+  // Across widths and types (0.5)
+  ASSERT_EQ(APFixedPoint(64, getSAccumSema()),
+            APFixedPoint(16384, getFractSema()));
+  ASSERT_EQ(APFixedPoint(64, getSAccumSema()),
+            APFixedPoint(1073741824, getLFractSema()));
+
+  // Across saturation
+  ASSERT_EQ(APFixedPoint(320, getSAccumSema()),
+            APFixedPoint(81920, Saturated(getAccumSema())));
+
+  // Across signs
+  ASSERT_EQ(APFixedPoint(320, getSAccumSema()),
+            APFixedPoint(640, getUSAccumSema()));
+  ASSERT_EQ(APFixedPoint(-320, getSAccumSema()),
+            APFixedPoint(-81920, getAccumSema()));
+
+  // Across padding
+  ASSERT_EQ(APFixedPoint(320, getSAccumSema()),
+            APFixedPoint(320, getPadUSAccumSema()));
+  ASSERT_EQ(APFixedPoint(640, getUSAccumSema()),
+            APFixedPoint(320, getPadUSAccumSema()));
+
+  // Less than
+  ASSERT_LT(APFixedPoint(-1, getSAccumSema()), APFixedPoint(0, getAccumSema()));
+  ASSERT_LT(APFixedPoint(-1, getSAccumSema()),
+            APFixedPoint(0, getUAccumSema()));
+  ASSERT_LT(APFixedPoint(0, getSAccumSema()), APFixedPoint(1, getAccumSema()));
+  ASSERT_LT(APFixedPoint(0, getSAccumSema()), APFixedPoint(1, getUAccumSema()));
+  ASSERT_LT(APFixedPoint(0, getUSAccumSema()), APFixedPoint(1, getAccumSema()));
+  ASSERT_LT(APFixedPoint(0, getUSAccumSema()),
+            APFixedPoint(1, getUAccumSema()));
+
+  // Greater than
+  ASSERT_GT(APFixedPoint(0, getAccumSema()), APFixedPoint(-1, getSAccumSema()));
+  ASSERT_GT(APFixedPoint(0, getUAccumSema()),
+            APFixedPoint(-1, getSAccumSema()));
+  ASSERT_GT(APFixedPoint(1, getAccumSema()), APFixedPoint(0, getSAccumSema()));
+  ASSERT_GT(APFixedPoint(1, getUAccumSema()), APFixedPoint(0, getSAccumSema()));
+  ASSERT_GT(APFixedPoint(1, getAccumSema()), APFixedPoint(0, getUSAccumSema()));
+  ASSERT_GT(APFixedPoint(1, getUAccumSema()),
+            APFixedPoint(0, getUSAccumSema()));
+}
+
+// Check that a fixed point value in one sema is the same in another sema
+void CheckUnsaturatedConversion(FixedPointSemantics Src,
+                                FixedPointSemantics Dst, int64_t TestVal) {
+  int64_t ScaledVal = TestVal;
+  bool IsNegative = ScaledVal < 0;
+  if (IsNegative)
+    ScaledVal = -ScaledVal;
+
+  if (Dst.getScale() > Src.getScale()) {
+    ScaledVal <<= (Dst.getScale() - Src.getScale());
+  } else {
+    ScaledVal >>= (Src.getScale() - Dst.getScale());
+  }
+
+  if (IsNegative)
+    ScaledVal = -ScaledVal;
+
+  APFixedPoint Fixed(TestVal, Src);
+  APFixedPoint Expected(ScaledVal, Dst);
+  ASSERT_EQ(Fixed.convert(Dst), Expected);
+}
+
+// Check the value in a given fixed point sema overflows to the saturated min
+// for another sema
+void CheckSaturatedConversionMin(FixedPointSemantics Src,
+                                 FixedPointSemantics Dst, int64_t TestVal) {
+  APFixedPoint Fixed(TestVal, Src);
+  ASSERT_EQ(Fixed.convert(Dst), APFixedPoint::getMin(Dst));
+}
+
+// Check the value in a given fixed point sema overflows to the saturated max
+// for another sema
+void CheckSaturatedConversionMax(FixedPointSemantics Src,
+                                 FixedPointSemantics Dst, int64_t TestVal) {
+  APFixedPoint Fixed(TestVal, Src);
+  ASSERT_EQ(Fixed.convert(Dst), APFixedPoint::getMax(Dst));
+}
+
+// Check one signed _Accum sema converted to other sema for different values.
+void CheckSignedAccumConversionsAgainstOthers(FixedPointSemantics Src,
+                                              int64_t OneVal) {
+  int64_t NormalVal = (OneVal * 2) + (OneVal / 2); // 2.5
+  int64_t HalfVal = (OneVal / 2);                  // 0.5
+
+  // +Accums to Accums
+  CheckUnsaturatedConversion(Src, getSAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getLAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getUSAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getUAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getULAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getPadUSAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getPadUAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getPadULAccumSema(), NormalVal);
+
+  // -Accums to Accums
+  CheckUnsaturatedConversion(Src, getSAccumSema(), -NormalVal);
+  CheckUnsaturatedConversion(Src, getAccumSema(), -NormalVal);
+  CheckUnsaturatedConversion(Src, getLAccumSema(), -NormalVal);
+  CheckSaturatedConversionMin(Src, Saturated(getUSAccumSema()), -NormalVal);
+  CheckSaturatedConversionMin(Src, Saturated(getUAccumSema()), -NormalVal);
+  CheckSaturatedConversionMin(Src, Saturated(getULAccumSema()), -NormalVal);
+  CheckSaturatedConversionMin(Src, Saturated(getPadUSAccumSema()), -NormalVal);
+  CheckSaturatedConversionMin(Src, Saturated(getPadUAccumSema()), -NormalVal);
+  CheckSaturatedConversionMin(Src, Saturated(getPadULAccumSema()), -NormalVal);
+
+  // +Accums to Fracts
+  CheckUnsaturatedConversion(Src, getSFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getLFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getUSFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getUFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getULFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getPadUSFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getPadUFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getPadULFractSema(), HalfVal);
+
+  // -Accums to Fracts
+  CheckUnsaturatedConversion(Src, getSFractSema(), -HalfVal);
+  CheckUnsaturatedConversion(Src, getFractSema(), -HalfVal);
+  CheckUnsaturatedConversion(Src, getLFractSema(), -HalfVal);
+  CheckSaturatedConversionMin(Src, Saturated(getUSFractSema()), -HalfVal);
+  CheckSaturatedConversionMin(Src, Saturated(getUFractSema()), -HalfVal);
+  CheckSaturatedConversionMin(Src, Saturated(getULFractSema()), -HalfVal);
+  CheckSaturatedConversionMin(Src, Saturated(getPadUSFractSema()), -HalfVal);
+  CheckSaturatedConversionMin(Src, Saturated(getPadUFractSema()), -HalfVal);
+  CheckSaturatedConversionMin(Src, Saturated(getPadULFractSema()), -HalfVal);
+
+  // 0 to Accums
+  CheckUnsaturatedConversion(Src, getSAccumSema(), 0);
+  CheckUnsaturatedConversion(Src, getAccumSema(), 0);
+  CheckUnsaturatedConversion(Src, getLAccumSema(), 0);
+  CheckUnsaturatedConversion(Src, getUSAccumSema(), 0);
+  CheckUnsaturatedConversion(Src, getUAccumSema(), 0);
+  CheckUnsaturatedConversion(Src, getULAccumSema(), 0);
+  CheckUnsaturatedConversion(Src, getPadUSAccumSema(), 0);
+  CheckUnsaturatedConversion(Src, getPadUAccumSema(), 0);
+  CheckUnsaturatedConversion(Src, getPadULAccumSema(), 0);
+
+  // 0 to Fracts
+  CheckUnsaturatedConversion(Src, getSFractSema(), 0);
+  CheckUnsaturatedConversion(Src, getFractSema(), 0);
+  CheckUnsaturatedConversion(Src, getLFractSema(), 0);
+  CheckUnsaturatedConversion(Src, getUSFractSema(), 0);
+  CheckUnsaturatedConversion(Src, getUFractSema(), 0);
+  CheckUnsaturatedConversion(Src, getULFractSema(), 0);
+  CheckUnsaturatedConversion(Src, getPadUSFractSema(), 0);
+  CheckUnsaturatedConversion(Src, getPadUFractSema(), 0);
+  CheckUnsaturatedConversion(Src, getPadULFractSema(), 0);
+}
+
+// Check one unsigned _Accum sema converted to other sema for different
+// values.
+void CheckUnsignedAccumConversionsAgainstOthers(FixedPointSemantics Src,
+                                                int64_t OneVal) {
+  int64_t NormalVal = (OneVal * 2) + (OneVal / 2); // 2.5
+  int64_t HalfVal = (OneVal / 2);                  // 0.5
+
+  // +UAccums to Accums
+  CheckUnsaturatedConversion(Src, getSAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getLAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getUSAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getUAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getULAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getPadUSAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getPadUAccumSema(), NormalVal);
+  CheckUnsaturatedConversion(Src, getPadULAccumSema(), NormalVal);
+
+  // +UAccums to Fracts
+  CheckUnsaturatedConversion(Src, getSFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getLFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getUSFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getUFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getULFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getPadUSFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getPadUFractSema(), HalfVal);
+  CheckUnsaturatedConversion(Src, getPadULFractSema(), HalfVal);
+}
+
+TEST(FixedPoint, AccumConversions) {
+  // Normal conversions
+  CheckSignedAccumConversionsAgainstOthers(getSAccumSema(), 128);
+  CheckUnsignedAccumConversionsAgainstOthers(getUSAccumSema(), 256);
+  CheckSignedAccumConversionsAgainstOthers(getAccumSema(), 32768);
+  CheckUnsignedAccumConversionsAgainstOthers(getUAccumSema(), 65536);
+  CheckSignedAccumConversionsAgainstOthers(getLAccumSema(), 2147483648);
+  CheckUnsignedAccumConversionsAgainstOthers(getULAccumSema(), 4294967296);
+
+  CheckUnsignedAccumConversionsAgainstOthers(getPadUSAccumSema(), 128);
+  CheckUnsignedAccumConversionsAgainstOthers(getPadUAccumSema(), 32768);
+  CheckUnsignedAccumConversionsAgainstOthers(getPadULAccumSema(), 2147483648);
+}
+
+TEST(FixedPoint, AccumConversionOverflow) {
+  // To SAccum max limit (65536)
+  CheckSaturatedConversionMax(getLAccumSema(), Saturated(getAccumSema()),
+                              140737488355328);
+  CheckSaturatedConversionMax(getLAccumSema(), Saturated(getUAccumSema()),
+                              140737488355328);
+  CheckSaturatedConversionMax(getLAccumSema(), Saturated(getPadUAccumSema()),
+                              140737488355328);
+  CheckSaturatedConversionMax(getULAccumSema(), Saturated(getAccumSema()),
+                              281474976710656);
+  CheckSaturatedConversionMax(getULAccumSema(), Saturated(getUAccumSema()),
+                              281474976710656);
+  CheckSaturatedConversionMax(getULAccumSema(), Saturated(getPadUAccumSema()),
+                              281474976710656);
+
+  CheckSaturatedConversionMax(getPadULAccumSema(), Saturated(getAccumSema()),
+                              140737488355328);
+  CheckSaturatedConversionMax(getPadULAccumSema(), Saturated(getUAccumSema()),
+                              140737488355328);
+  CheckSaturatedConversionMax(getPadULAccumSema(),
+                              Saturated(getPadUAccumSema()), 140737488355328);
+
+  // To SAccum min limit (-65536)
+  CheckSaturatedConversionMin(getLAccumSema(), Saturated(getAccumSema()),
+                              -140737488355328);
+  CheckSaturatedConversionMin(getLAccumSema(), Saturated(getUAccumSema()),
+                              -140737488355328);
+  CheckSaturatedConversionMin(getLAccumSema(), Saturated(getPadUAccumSema()),
+                              -140737488355328);
+}
+
+TEST(FixedPoint, SAccumConversionOverflow) {
+  // To SAccum max limit (256)
+  CheckSaturatedConversionMax(getAccumSema(), Saturated(getSAccumSema()),
+                              8388608);
+  CheckSaturatedConversionMax(getAccumSema(), Saturated(getUSAccumSema()),
+                              8388608);
+  CheckSaturatedConversionMax(getAccumSema(), Saturated(getPadUSAccumSema()),
+                              8388608);
+  CheckSaturatedConversionMax(getUAccumSema(), Saturated(getSAccumSema()),
+                              16777216);
+  CheckSaturatedConversionMax(getUAccumSema(), Saturated(getUSAccumSema()),
+                              16777216);
+  CheckSaturatedConversionMax(getUAccumSema(), Saturated(getPadUSAccumSema()),
+                              16777216);
+  CheckSaturatedConversionMax(getLAccumSema(), Saturated(getSAccumSema()),
+                              549755813888);
+  CheckSaturatedConversionMax(getLAccumSema(), Saturated(getUSAccumSema()),
+                              549755813888);
+  CheckSaturatedConversionMax(getLAccumSema(), Saturated(getPadUSAccumSema()),
+                              549755813888);
+  CheckSaturatedConversionMax(getULAccumSema(), Saturated(getSAccumSema()),
+                              1099511627776);
+  CheckSaturatedConversionMax(getULAccumSema(), Saturated(getUSAccumSema()),
+                              1099511627776);
+  CheckSaturatedConversionMax(getULAccumSema(), Saturated(getPadUSAccumSema()),
+                              1099511627776);
+
+  CheckSaturatedConversionMax(getPadUAccumSema(), Saturated(getSAccumSema()),
+                              8388608);
+  CheckSaturatedConversionMax(getPadUAccumSema(), Saturated(getUSAccumSema()),
+                              8388608);
+  CheckSaturatedConversionMax(getPadUAccumSema(),
+                              Saturated(getPadUSAccumSema()), 8388608);
+  CheckSaturatedConversionMax(getPadULAccumSema(), Saturated(getSAccumSema()),
+                              549755813888);
+  CheckSaturatedConversionMax(getPadULAccumSema(), Saturated(getUSAccumSema()),
+                              549755813888);
+  CheckSaturatedConversionMax(getPadULAccumSema(),
+                              Saturated(getPadUSAccumSema()), 549755813888);
+
+  // To SAccum min limit (-256)
+  CheckSaturatedConversionMin(getAccumSema(), Saturated(getSAccumSema()),
+                              -8388608);
+  CheckSaturatedConversionMin(getAccumSema(), Saturated(getUSAccumSema()),
+                              -8388608);
+  CheckSaturatedConversionMin(getAccumSema(), Saturated(getPadUSAccumSema()),
+                              -8388608);
+  CheckSaturatedConversionMin(getLAccumSema(), Saturated(getSAccumSema()),
+                              -549755813888);
+  CheckSaturatedConversionMin(getLAccumSema(), Saturated(getUSAccumSema()),
+                              -549755813888);
+  CheckSaturatedConversionMin(getLAccumSema(), Saturated(getPadUSAccumSema()),
+                              -549755813888);
+}
+
+TEST(FixedPoint, GetValueSignAfterConversion) {
+  APFixedPoint Fixed(255 << 7, getSAccumSema());
+  ASSERT_TRUE(Fixed.getValue().isSigned());
+  APFixedPoint UFixed = Fixed.convert(getUSAccumSema());
+  ASSERT_TRUE(UFixed.getValue().isUnsigned());
+  ASSERT_EQ(UFixed.getValue(), APSInt::getUnsigned(255 << 8).extOrTrunc(16));
+}
+
+TEST(FixedPoint, ModularWrapAround) {
+  // Positive to negative
+  APFixedPoint Val = APFixedPoint(1ULL << 7, getSAccumSema());
+  ASSERT_EQ(Val.convert(getLFractSema()).getValue(), -(1ULL << 31));
+
+  Val = APFixedPoint(1ULL << 23, getAccumSema());
+  ASSERT_EQ(Val.convert(getSAccumSema()).getValue(), -(1ULL << 15));
+
+  Val = APFixedPoint(1ULL << 47, getLAccumSema());
+  ASSERT_EQ(Val.convert(getAccumSema()).getValue(), -(1ULL << 31));
+
+  // Negative to positive
+  Val = APFixedPoint(/*-1.5*/ -192, getSAccumSema());
+  ASSERT_EQ(Val.convert(getLFractSema()).getValue(), 1ULL << 30);
+
+  Val = APFixedPoint(-(257 << 15), getAccumSema());
+  ASSERT_EQ(Val.convert(getSAccumSema()).getValue(), 255 << 7);
+
+  Val = APFixedPoint(-(65537ULL << 31), getLAccumSema());
+  ASSERT_EQ(Val.convert(getAccumSema()).getValue(), 65535 << 15);
+
+  // Signed to unsigned
+  Val = APFixedPoint(-(1 << 7), getSAccumSema());
+  ASSERT_EQ(Val.convert(getUSAccumSema()).getValue(), 255 << 8);
+
+  Val = APFixedPoint(-(1 << 15), getAccumSema());
+  ASSERT_EQ(Val.convert(getUAccumSema()).getValue(), 65535ULL << 16);
+
+  Val = APFixedPoint(-(1ULL << 31), getLAccumSema());
+  ASSERT_EQ(Val.convert(getULAccumSema()).getValue().getZExtValue(),
+            4294967295ULL << 32);
+}
+
+} // namespace