From: peter klausler <pklausler@nvidia.com>
Date: Fri, 30 Mar 2018 18:32:37 +0000 (-0700)
Subject: [flang] Remove some needless checks for mandatory spaces before keywords and names... 
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fdae1bfc4a13c45081c32735f2ccc1612aaad23e;p=platform%2Fupstream%2Fllvm.git

[flang] Remove some needless checks for mandatory spaces before keywords and names that could not be present anyway, they were slowing things down.

Original-commit: flang-compiler/f18@a07b78d2d76c994d0594fba6c38d3b98f3d03e9f
Reviewed-on: https://github.com/flang-compiler/f18/pull/35
---

diff --git a/flang/lib/parser/grammar.h b/flang/lib/parser/grammar.h
index fde11c2..e466d52 100644
--- a/flang/lib/parser/grammar.h
+++ b/flang/lib/parser/grammar.h
@@ -714,16 +714,14 @@ constexpr auto signedDigitString = "-"_ch >>
 
 // R707 signed-int-literal-constant -> [sign] int-literal-constant
 TYPE_PARSER(space >> sourced(construct<SignedIntLiteralConstant>{}(
-                         signedDigitString, maybe(underscore >> kindParam))) /
-        spaceCheck)
+                         signedDigitString, maybe(underscore >> kindParam))))
 
 // R708 int-literal-constant -> digit-string [_ kind-param]
 TYPE_PARSER(construct<IntLiteralConstant>{}(
-                space >> digitString, maybe(underscore >> kindParam)) /
-    spaceCheck)
+    space >> digitString, maybe(underscore >> kindParam)))
 
 // R709 kind-param -> digit-string | scalar-int-constant-name
-TYPE_PARSER(construct<KindParam>{}(digitString / spaceCheck) ||
+TYPE_PARSER(construct<KindParam>{}(digitString) ||
     construct<KindParam>{}(scalar(integer(constant(name)))))
 
 // R712 sign -> + | -
@@ -755,8 +753,7 @@ TYPE_CONTEXT_PARSER("REAL literal constant"_en_US,
                 "."_ch >> digitString >> maybe(exponentPart) >> ok ||
                 digitString >> exponentPart >> ok) >>
             construct<RealLiteralConstant::Real>{}),
-        maybe(underscore >> kindParam)) /
-        spaceCheck)
+        maybe(underscore >> kindParam)))
 
 // R718 complex-literal-constant -> ( real-part , imag-part )
 TYPE_CONTEXT_PARSER("COMPLEX literal constant"_en_US,