From: Andrew Pinski <quic_apinski@quicinc.com>
Date: Sat, 26 Apr 2025 12:49:23 +0000 (-0700)
Subject: gimplefe: Round trip of rotates [PR119432]
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bfc3154375710a37969b2002dc87219dc2102a13;p=thirdparty%2Fgcc.git

gimplefe: Round trip of rotates [PR119432]

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_apinski@quicinc.com>
---

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<<";