diff --git a/src/coord.hh b/src/coord.hh
index daa8bee0..f60be779 100644
--- a/src/coord.hh
+++ b/src/coord.hh
@@ -12,14 +12,17 @@ struct LineAndColumn
     LineType   line;
     ColumnType column;
 
+    [[gnu::always_inline]]
     constexpr LineAndColumn(LineType line = 0, ColumnType column = 0)
         : line(line), column(column) {}
 
+    [[gnu::always_inline]]
     constexpr EffectiveType operator+(EffectiveType other) const
     {
         return EffectiveType(line + other.line, column + other.column);
     }
 
+    [[gnu::always_inline]]
     EffectiveType& operator+=(EffectiveType other)
     {
         line   += other.line;
@@ -27,11 +30,13 @@ struct LineAndColumn
         return *static_cast<EffectiveType*>(this);
     }
 
+    [[gnu::always_inline]]
     constexpr EffectiveType operator-(EffectiveType other) const
     {
         return EffectiveType(line - other.line, column - other.column);
     }
 
+    [[gnu::always_inline]]
     EffectiveType& operator-=(EffectiveType other)
     {
         line   -= other.line;
@@ -39,35 +44,41 @@ struct LineAndColumn
         return *static_cast<EffectiveType*>(this);
     }
 
+    [[gnu::always_inline]]
     constexpr bool operator< (EffectiveType other) const
     {
         return (line != other.line) ? line < other.line
                                     : column < other.column;
     }
 
+    [[gnu::always_inline]]
     constexpr bool operator<= (EffectiveType other) const
     {
         return (line != other.line) ? line < other.line
                                     : column <= other.column;
     }
 
+    [[gnu::always_inline]]
     constexpr bool operator> (EffectiveType other) const
     {
         return (line != other.line) ? line > other.line
                                     : column > other.column;
     }
 
+    [[gnu::always_inline]]
     constexpr bool operator>= (EffectiveType other) const
     {
         return (line != other.line) ? line > other.line
                                     : column >= other.column;
     }
 
+    [[gnu::always_inline]]
     constexpr bool operator== (EffectiveType other) const
     {
         return line == other.line and column == other.column;
     }
 
+    [[gnu::always_inline]]
     constexpr bool operator!= (EffectiveType other) const
     {
         return line != other.line or column != other.column;
@@ -76,12 +87,14 @@ struct LineAndColumn
 
 struct ByteCoord : LineAndColumn<ByteCoord, LineCount, ByteCount>
 {
+    [[gnu::always_inline]]
     constexpr ByteCoord(LineCount line = 0, ByteCount column = 0)
         : LineAndColumn(line, column) {}
 };
 
 struct CharCoord : LineAndColumn<CharCoord, LineCount, CharCount>
 {
+    [[gnu::always_inline]]
     constexpr CharCoord(LineCount line = 0, CharCount column = 0)
         : LineAndColumn(line, column) {}
 };
diff --git a/src/units.hh b/src/units.hh
index 430971e8..69ecffdb 100644
--- a/src/units.hh
+++ b/src/units.hh
@@ -10,6 +10,7 @@ template<typename RealType, typename ValueType = int>
 class StronglyTypedNumber
 {
 public:
+    [[gnu::always_inline]]
     explicit constexpr StronglyTypedNumber(ValueType value)
         : m_value(value)
     {
@@ -17,72 +18,96 @@ public:
                      "RealType is not derived from StronglyTypedNumber");
     }
 
+    [[gnu::always_inline]]
     constexpr RealType operator+(RealType other) const
     { return RealType(m_value + other.m_value); }
 
+    [[gnu::always_inline]]
     constexpr RealType operator-(RealType other) const
     { return RealType(m_value - other.m_value); }
 
+    [[gnu::always_inline]]
     constexpr RealType operator*(RealType other) const
     { return RealType(m_value * other.m_value); }
 
+    [[gnu::always_inline]]
     constexpr RealType operator/(RealType other) const
     { return RealType(m_value / other.m_value); }
 
+    [[gnu::always_inline]]
     RealType& operator+=(RealType other)
     { m_value += other.m_value; return static_cast<RealType&>(*this); }
 
+    [[gnu::always_inline]]
     RealType& operator-=(RealType other)
     { m_value -= other.m_value; return static_cast<RealType&>(*this); }
 
+    [[gnu::always_inline]]
     RealType& operator*=(RealType other)
     { m_value *= other.m_value; return static_cast<RealType&>(*this); }
 
+    [[gnu::always_inline]]
     RealType& operator/=(RealType other)
     { m_value /= other.m_value; return static_cast<RealType&>(*this); }
 
+    [[gnu::always_inline]]
     RealType& operator++()
     { ++m_value; return static_cast<RealType&>(*this); }
 
+    [[gnu::always_inline]]
     RealType& operator--()
     { --m_value; return static_cast<RealType&>(*this); }
 
+    [[gnu::always_inline]]
     RealType operator++(int)
     { RealType backup(static_cast<RealType&>(*this)); ++m_value; return backup; }
 
+    [[gnu::always_inline]]
     RealType operator--(int)
     { RealType backup(static_cast<RealType&>(*this)); --m_value; return backup; }
 
+    [[gnu::always_inline]]
     constexpr RealType operator-() const { return RealType(-m_value); }
 
+    [[gnu::always_inline]]
     constexpr RealType operator%(RealType other) const
     { return RealType(m_value % other.m_value); }
 
+    [[gnu::always_inline]]
     RealType& operator%=(RealType other)
     { m_value %= other.m_value; return static_cast<RealType&>(*this); }
 
+    [[gnu::always_inline]]
     constexpr bool operator==(RealType other) const
     { return m_value == other.m_value; }
 
+    [[gnu::always_inline]]
     constexpr bool operator!=(RealType other) const
     { return m_value != other.m_value; }
 
+    [[gnu::always_inline]]
     constexpr bool operator<(RealType other) const
     { return m_value < other.m_value; }
 
+    [[gnu::always_inline]]
     constexpr bool operator<=(RealType other) const
     { return m_value <= other.m_value; }
 
+    [[gnu::always_inline]]
     constexpr bool operator>(RealType other) const
     { return m_value > other.m_value; }
 
+    [[gnu::always_inline]]
     constexpr bool operator>=(RealType other) const
     { return m_value >= other.m_value; }
 
+    [[gnu::always_inline]]
     constexpr bool operator!() const
     { return !m_value; }
 
+    [[gnu::always_inline]]
     explicit constexpr operator ValueType() const { return m_value; }
+    [[gnu::always_inline]]
     explicit constexpr operator bool() const { return m_value; }
 private:
     ValueType m_value;
@@ -90,9 +115,11 @@ private:
 
 struct LineCount : public StronglyTypedNumber<LineCount, int>
 {
+    [[gnu::always_inline]]
     constexpr LineCount(int value = 0) : StronglyTypedNumber<LineCount>(value) {}
 };
 
+[[gnu::always_inline]]
 inline constexpr LineCount operator"" _line(unsigned long long int value)
 {
     return LineCount(value);
@@ -100,9 +127,11 @@ inline constexpr LineCount operator"" _line(unsigned long long int value)
 
 struct ByteCount : public StronglyTypedNumber<ByteCount, int>
 {
+    [[gnu::always_inline]]
     constexpr ByteCount(int value = 0) : StronglyTypedNumber<ByteCount>(value) {}
 };
 
+[[gnu::always_inline]]
 inline constexpr ByteCount operator"" _byte(unsigned long long int value)
 {
     return ByteCount(value);
@@ -110,9 +139,11 @@ inline constexpr ByteCount operator"" _byte(unsigned long long int value)
 
 struct CharCount : public StronglyTypedNumber<CharCount, int>
 {
+    [[gnu::always_inline]]
     constexpr CharCount(int value = 0) : StronglyTypedNumber<CharCount>(value) {}
 };
 
+[[gnu::always_inline]]
 inline constexpr CharCount operator"" _char(unsigned long long int value)
 {
     return CharCount(value);