From: Segher Boessenkool <segher@kernel.crashing.org>
Date: Wed, 20 Nov 2019 13:38:52 +0000 (+0100)
Subject: rs6000: Fix UNORDERED without NaNs, for DFP (PR92573)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=bcb4b4b4baad38d0a9ac353822506fa1d7fb6b25;p=gcc.git

rs6000: Fix UNORDERED without NaNs, for DFP (PR92573)

This is the analogue of r278103, but for DFP.


	PR target/92573
	* config/rs6000/dfp.md (dfptstsfi_<code>_<mode> for DFP_TEST and DDTD):
	Handle UNORDERED if !HONOR_NANS.

From-SVN: r278497
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 79b8210eccc..dc377af56d9 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2019-11-20  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	PR target/92573
+	* config/rs6000/dfp.md (dfptstsfi_<code>_<mode> for DFP_TEST and DDTD):
+	Handle UNORDERED if !HONOR_NANS.
+
 2019-11-20  Jan Hubicka  <jh@suse.cz>
 
 	* ipa-inline.c (wrapper_heuristics_may_apply): Break out from ...
diff --git a/gcc/config/rs6000/dfp.md b/gcc/config/rs6000/dfp.md
index 659b3c9a39b..687858c2506 100644
--- a/gcc/config/rs6000/dfp.md
+++ b/gcc/config/rs6000/dfp.md
@@ -289,6 +289,12 @@
   ]
   "TARGET_P9_MISC"
 {
+  if (<CODE> == UNORDERED && !HONOR_NANS (<MODE>mode))
+    {
+      emit_move_insn (operands[0], const0_rtx);
+      DONE;
+    }
+
   operands[3] = gen_reg_rtx (CCFPmode);
 })