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[4/4] tree: Remove KFmode workaround [PR112993]

Message ID a25dbe2f-6097-940c-f0a8-9aa69d30e12a@linux.ibm.com
State New
Headers show
Series [1/4] rs6000: Make all 128 bit scalar FP modes have 128 bit precision [PR112993] | expand

Commit Message

Kewen.Lin May 8, 2024, 5:36 a.m. UTC 
Hi,

The fix for PR112993 makes KFmode have 128 bit mode precision,
we don't need this workaround to fix up the type precision any
more, and just go with mode precision.  So this patch is to
remove KFmode workaround.

Bootstrapped and regress-tested on:
  - powerpc64-linux-gnu P8/P9 (with ibm128 by default)
  - powerpc64le-linux-gnu P9/P10 (with ibm128 by default)
  - powerpc64le-linux-gnu P9 (with ieee128 by default)

Is it OK for trunk if {1,2}/4 in this series get landed?

BR,
Kewen
-----

	PR target/112993

gcc/ChangeLog:

	* tree.cc (build_common_tree_nodes): Drop the workaround for rs6000
	KFmode precision adjustment.
---
 gcc/tree.cc | 9 ---------
 1 file changed, 9 deletions(-)

--
2.39.1
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Patch

diff --git a/gcc/tree.cc b/gcc/tree.cc
index f801712c9dd..f730981ec8b 100644
--- a/gcc/tree.cc
+++ b/gcc/tree.cc
@@ -9575,15 +9575,6 @@  build_common_tree_nodes (bool signed_char)
       if (!targetm.floatn_mode (n, extended).exists (&mode))
 	continue;
       int precision = GET_MODE_PRECISION (mode);
-      /* Work around the rs6000 KFmode having precision 113 not
-	 128.  */
-      const struct real_format *fmt = REAL_MODE_FORMAT (mode);
-      gcc_assert (fmt->b == 2 && fmt->emin + fmt->emax == 3);
-      int min_precision = fmt->p + ceil_log2 (fmt->emax - fmt->emin);
-      if (!extended)
-	gcc_assert (min_precision == n);
-      if (precision < min_precision)
-	precision = min_precision;
       FLOATN_NX_TYPE_NODE (i) = make_node (REAL_TYPE);
       TYPE_PRECISION (FLOATN_NX_TYPE_NODE (i)) = precision;
       layout_type (FLOATN_NX_TYPE_NODE (i));