Replace FIXMEs with TODOs

As requested here:
https://swiftshader-review.googlesource.com/c/SwiftShader/+/31841/1#message-24da63454b89e5d545f3b686f2470c8d2392ee61

Change-Id: I76500807933b565fb13f30268c47c7caa4be7c69
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/31843
Tested-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>

Author: ben-clayton

src/Device/Blitter.cpp

@@ -1297,7 +1297,7 @@ namespace sw
 		Int4 linear = CmpLT(c, Float4(0.04045f));
 
 		Float4 s = c;
-		s.xyz = As<Float4>((linear & As<Int4>(lc)) | (~linear & As<Int4>(ec)));   // FIXME: IfThenElse()
+		s.xyz = As<Float4>((linear & As<Int4>(lc)) | (~linear & As<Int4>(ec)));   // TODO: IfThenElse()
 
 		return s;
 	}

src/Pipeline/SamplerCore.cpp

@@ -2195,7 +2195,7 @@ namespace sw
 				default:   // Wrap
 					{
 						Int4 under = CmpLT(xyz0, Int4(0));
-						xyz0 = (under & maxXYZ) | (~under & xyz0);   // xyz < 0 ? dim - 1 : xyz   // FIXME: IfThenElse()
+						xyz0 = (under & maxXYZ) | (~under & xyz0);   // xyz < 0 ? dim - 1 : xyz   // TODO: IfThenElse()
 
 						Int4 nover = CmpLT(xyz1, dim);
 						xyz1 = nover & xyz1;   // xyz >= dim ? 0 : xyz

src/Pipeline/SpirvShader.cpp

@@ -275,7 +275,7 @@ namespace
 		sw::SIMD::Int linear = CmpLT(c, sw::SIMD::Float(0.04045f));
 
 		sw::SIMD::Float s = c;
-		s.xyz = rr::As<sw::SIMD::Float>((linear & rr::As<sw::SIMD::Int>(lc)) | (~linear & rr::As<sw::SIMD::Int>(ec)));   // FIXME: IfThenElse()
+		s.xyz = rr::As<sw::SIMD::Float>((linear & rr::As<sw::SIMD::Int>(lc)) | (~linear & rr::As<sw::SIMD::Int>(ec)));   // TODO: IfThenElse()
 
 		return s;
 	}
@@ -3486,7 +3486,7 @@ namespace sw
 		for (auto i = 0u; i < type.sizeInComponents; i++)
 		{
 			auto sel = cond.Int(condIsScalar ? 0 : i);
-			dst.move(i, (sel & lhs.Int(i)) | (~sel & rhs.Int(i)));   // FIXME: IfThenElse()
+			dst.move(i, (sel & lhs.Int(i)) | (~sel & rhs.Int(i)));   // TODO: IfThenElse()
 		}
 
 		return EmitResult::Continue;

src/Renderer/Blitter.cpp

@@ -1174,7 +1174,7 @@ namespace sw
 		Int4 linear = CmpLT(c, Float4(0.04045f));
 
 		Float4 s = c;
-		s.xyz = As<Float4>((linear & As<Int4>(lc)) | (~linear & As<Int4>(ec)));   // FIXME: IfThenElse()
+		s.xyz = As<Float4>((linear & As<Int4>(lc)) | (~linear & As<Int4>(ec)));   // TODO: IfThenElse()
 
 		return s;
 	}

src/Shader/SamplerCore.cpp

@@ -2481,7 +2481,7 @@ namespace sw
 				default:   // Wrap
 					{
 						Int4 under = CmpLT(xyz0, Int4(0));
-						xyz0 = (under & maxXYZ) | (~under & xyz0);   // xyz < 0 ? dim - 1 : xyz   // FIXME: IfThenElse()
+						xyz0 = (under & maxXYZ) | (~under & xyz0);   // xyz < 0 ? dim - 1 : xyz   // TODO: IfThenElse()
 
 						Int4 nover = CmpLT(xyz1, dim);
 						xyz1 = nover & xyz1;   // xyz >= dim ? 0 : xyz