Add Float to UInt unit test
Conversion from floating-point to unsigned integer is not a native
instruction on some CPU architectures, so excercise the case where it
overflows signed int.
Bug: b/31816482
Change-Id: I4ce924bbf4eb4c371e25d800fd4d7794edfa62cb
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/39188
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Chris Forbes <chrisforbes@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/src/Reactor/ReactorUnitTests.cpp b/src/Reactor/ReactorUnitTests.cpp
index 62249a6..b97894b 100644
--- a/src/Reactor/ReactorUnitTests.cpp
+++ b/src/Reactor/ReactorUnitTests.cpp
@@ -808,6 +808,44 @@
}
+TEST(ReactorUnitTests, FPtoUI)
+{
+ FunctionT<int(void*)> function;
+ {
+ Pointer<Byte> out = function.Arg<0>();
+
+ *Pointer<UInt>(out + 0) = UInt(Float(0xF0000000u));
+ *Pointer<UInt>(out + 4) = UInt(Float(0xC0000000u));
+ *Pointer<UInt>(out + 8) = UInt(Float(0x00000001u));
+ *Pointer<UInt>(out + 12) = UInt(Float(0xF000F000u));
+
+ *Pointer<UInt4>(out + 16) = UInt4(Float4(0xF0000000u, 0x80000000u, 0x00000000u, 0xCCCC0000u));
+
+ Return(0);
+ }
+
+ auto routine = function("one");
+
+ if(routine)
+ {
+ unsigned int out[2][4];
+
+ memset(&out, 0, sizeof(out));
+
+ routine(&out);
+
+ EXPECT_EQ(out[0][0], 0xF0000000u);
+ EXPECT_EQ(out[0][1], 0xC0000000u);
+ EXPECT_EQ(out[0][2], 0x00000001u);
+ EXPECT_EQ(out[0][3], 0xF000F000u);
+
+ EXPECT_EQ(out[1][0], 0xF0000000u);
+ EXPECT_EQ(out[1][1], 0x80000000u);
+ EXPECT_EQ(out[1][2], 0x00000000u);
+ EXPECT_EQ(out[1][3], 0xCCCC0000u);
+ }
+}
+
TEST(ReactorUnitTests, VectorCompare)
{
{
