Reduce number of branches and IL size of string.Trim methods (#9115)

diff --git a/src/mscorlib/src/System/String.Manipulation.cs b/src/mscorlib/src/System/String.Manipulation.cs
index 7b51abf..33de93f 100644 (file)
--- a/src/mscorlib/src/System/String.Manipulation.cs
+++ b/src/mscorlib/src/System/String.Manipulation.cs
@@ -1556,7 +1556,7 @@ namespace System
             {
                 return TrimWhiteSpaceHelper(TrimType.Both);
             }
-            fixed (char* pTrimChars = trimChars)
+            fixed (char* pTrimChars = &trimChars[0])
             {
                 return TrimHelper(pTrimChars, trimChars.Length, TrimType.Both);
             }
@@ -1575,7 +1575,7 @@ namespace System
             {
                 return TrimWhiteSpaceHelper(TrimType.Head);
             }
-            fixed (char* pTrimChars = trimChars)
+            fixed (char* pTrimChars = &trimChars[0])
             {
                 return TrimHelper(pTrimChars, trimChars.Length, TrimType.Head);
             }
@@ -1594,7 +1594,7 @@ namespace System
             {
                 return TrimWhiteSpaceHelper(TrimType.Tail);
             }
-            fixed (char* pTrimChars = trimChars)
+            fixed (char* pTrimChars = &trimChars[0])
             {
                 return TrimHelper(pTrimChars, trimChars.Length, TrimType.Tail);
             }