[PATCH 2/2] gimplefe: Round trip of rotates [PR119432]

[Andrew Pinski]

This adds support for rotate left/right to the GIMPLE front-end
via __ROTATE_LEFT/__ROTATE_RIGHT oeprators.

        PR c/119432
gcc/c/ChangeLog:

        * gimple-parser.cc (gimple_binary_identifier_code): Add
        __ROTATE_LEFT and __ROTATE_RIGHT.

gcc/ChangeLog:

        * tree-pretty-print.cc (op_symbol_code): For LROTATE_EXPR,
        output __ROTATE_LEFT for gimple.
        For RROTATE_EXPR output __ROTATE_RIGHT for gimple.

gcc/testsuite/ChangeLog:

        * gcc.dg/gimplefe-57.c: New test.

Signed-off-by: Andrew Pinski <quic_apin...@quicinc.com>
---
 gcc/c/gimple-parser.cc             |  2 ++
 gcc/testsuite/gcc.dg/gimplefe-57.c | 11 +++++++++++
 gcc/tree-pretty-print.cc           |  4 ++--
 3 files changed, 15 insertions(+), 2 deletions(-)
 create mode 100644 gcc/testsuite/gcc.dg/gimplefe-57.c

diff --git a/gcc/c/gimple-parser.cc b/gcc/c/gimple-parser.cc
index 34850d7c359..5fd1db87453 100644
--- a/gcc/c/gimple-parser.cc
+++ b/gcc/c/gimple-parser.cc
@@ -982,6 +982,8 @@ static const std::pair<const char *, tree_code> 
gimple_binary_identifier_code[]
     {"__FLOOR_MOD", FLOOR_MOD_EXPR},
     {"__ROUND_MOD", ROUND_MOD_EXPR},
     {"__CEIL_MOD", CEIL_MOD_EXPR},
+    {"__ROTATE_LEFT", LROTATE_EXPR},
+    {"__ROTATE_RIGHT", RROTATE_EXPR},
   };
 
 /* Parse gimple binary expr.
diff --git a/gcc/testsuite/gcc.dg/gimplefe-57.c 
b/gcc/testsuite/gcc.dg/gimplefe-57.c
new file mode 100644
index 00000000000..d3eca56119d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/gimplefe-57.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-fgimple" } */
+
+int __GIMPLE
+foo (int a, int b)
+{
+  int tem;
+  tem = a __ROTATE_LEFT b;
+  tem = tem __ROTATE_RIGHT b;
+  return tem;
+}
diff --git a/gcc/tree-pretty-print.cc b/gcc/tree-pretty-print.cc
index c1a21e77bd2..359359d98c2 100644
--- a/gcc/tree-pretty-print.cc
+++ b/gcc/tree-pretty-print.cc
@@ -4795,10 +4795,10 @@ op_symbol_code (enum tree_code code, dump_flags_t flags)
       return ">>";
 
     case LROTATE_EXPR:
-      return "r<<";
+      return (flags & TDF_GIMPLE) ? "__ROTATE_LEFT" : "r<<";
 
     case RROTATE_EXPR:
-      return "r>>";
+      return (flags & TDF_GIMPLE) ? "__ROTATE_RIGHT" : "r>>";
 
     case WIDEN_LSHIFT_EXPR:
       return "w<<";
-- 
2.43.0