From: Pan Li <pan2.li@intel.com>
Date: Thu, 9 Nov 2023 14:04:39 +0000 (+0800)
Subject: Internal-fn: Add FLOATN support for l/ll round and rint [PR/112432]
X-Git-Tag: basepoints/gcc-15~4832
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=907603d4b117e82dbbde2d58a04e33f3021908e7;p=thirdparty%2Fgcc.git

Internal-fn: Add FLOATN support for l/ll round and rint [PR/112432]

The defined DEF_EXT_LIB_FLOATN_NX_BUILTINS functions should also
have DEF_INTERNAL_FLT_FLOATN_FN instead of DEF_INTERNAL_FLT_FN for
the FLOATN support. According to the glibc API and gcc builtin, we
have below table for the FLOATN is supported or not.

+---------+-------+-------------------------------------+
|         | glibc | gcc: DEF_EXT_LIB_FLOATN_NX_BUILTINS |
+---------+-------+-------------------------------------+
| iceil   | N     | N                                   |
| ifloor  | N     | N                                   |
| irint   | N     | N                                   |
| iround  | N     | N                                   |
| lceil   | N     | N                                   |
| lfloor  | N     | N                                   |
| lrint   | Y     | Y                                   |
| lround  | Y     | Y                                   |
| llceil  | N     | N                                   |
| llfllor | N     | N                                   |
| llrint  | Y     | Y                                   |
| llround | Y     | Y                                   |
+---------+-------+-------------------------------------+

This patch would like to support FLOATN for:
1. lrint
2. lround
3. llrint
4. llround

The below tests are passed within this patch:
1. x86 bootstrap and regression test.
2. aarch64 regression test.
3. riscv regression tests.

	PR target/112432

gcc/ChangeLog:

	* internal-fn.def (LRINT): Add FLOATN support.
	(LROUND): Ditto.
	(LLRINT): Ditto.
	(LLROUND): Ditto.

Signed-off-by: Pan Li <pan2.li@intel.com>
---

diff --git a/gcc/internal-fn.def b/gcc/internal-fn.def
index ec72b3b0d9d3..319e0ab26cde 100644
--- a/gcc/internal-fn.def
+++ b/gcc/internal-fn.def
@@ -366,12 +366,12 @@ DEF_INTERNAL_FLT_FN (IRINT, ECF_CONST, lrint, unary_convert)
 DEF_INTERNAL_FLT_FN (IROUND, ECF_CONST, lround, unary_convert)
 DEF_INTERNAL_FLT_FN (LCEIL, ECF_CONST, lceil, unary_convert)
 DEF_INTERNAL_FLT_FN (LFLOOR, ECF_CONST, lfloor, unary_convert)
-DEF_INTERNAL_FLT_FN (LRINT, ECF_CONST, lrint, unary_convert)
-DEF_INTERNAL_FLT_FN (LROUND, ECF_CONST, lround, unary_convert)
+DEF_INTERNAL_FLT_FLOATN_FN (LRINT, ECF_CONST, lrint, unary_convert)
+DEF_INTERNAL_FLT_FLOATN_FN (LROUND, ECF_CONST, lround, unary_convert)
 DEF_INTERNAL_FLT_FN (LLCEIL, ECF_CONST, lceil, unary_convert)
 DEF_INTERNAL_FLT_FN (LLFLOOR, ECF_CONST, lfloor, unary_convert)
-DEF_INTERNAL_FLT_FN (LLRINT, ECF_CONST, lrint, unary_convert)
-DEF_INTERNAL_FLT_FN (LLROUND, ECF_CONST, lround, unary_convert)
+DEF_INTERNAL_FLT_FLOATN_FN (LLRINT, ECF_CONST, lrint, unary_convert)
+DEF_INTERNAL_FLT_FLOATN_FN (LLROUND, ECF_CONST, lround, unary_convert)
 
 /* FP rounding.  */
 DEF_INTERNAL_FLT_FLOATN_FN (CEIL, ECF_CONST, ceil, unary)