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* [gcc r14-4146] [frange] Remove redundant known_isnan() checks.
@ 2023-09-19 16:30 Aldy Hernandez
  0 siblings, 0 replies; only message in thread
From: Aldy Hernandez @ 2023-09-19 16:30 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:36eec7995b4d53083c3ee7824bd765b5eba8b1a1

commit r14-4146-g36eec7995b4d53083c3ee7824bd765b5eba8b1a1
Author: Aldy Hernandez <aldyh@redhat.com>
Date:   Mon Sep 18 21:45:35 2023 -0400

    [frange] Remove redundant known_isnan() checks.
    
    The known_isnan() method is a subset of maybe_isnan().  This patch
    removes redundant calls to known_isnan().
    
    gcc/ChangeLog:
    
            * range-op-float.cc (operator_lt::op1_range): Remove known_isnan check.
            (operator_lt::op2_range): Same.
            (operator_le::op1_range): Same.
            (operator_le::op2_range): Same.
            (operator_gt::op1_range): Same.
            (operator_gt::op2_range): Same.
            (operator_ge::op1_range): Same.
            (operator_ge::op2_range): Same.
            (foperator_unordered_lt::op1_range): Same.
            (foperator_unordered_lt::op2_range): Same.
            (foperator_unordered_le::op1_range): Same.
            (foperator_unordered_le::op2_range): Same.
            (foperator_unordered_gt::op1_range): Same.
            (foperator_unordered_gt::op2_range): Same.
            (foperator_unordered_ge::op1_range): Same.
            (foperator_unordered_ge::op2_range): Same.

Diff:
---
 gcc/range-op-float.cc | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/gcc/range-op-float.cc b/gcc/range-op-float.cc
index 91d3096fdac..5eb1d9c06e3 100644
--- a/gcc/range-op-float.cc
+++ b/gcc/range-op-float.cc
@@ -981,7 +981,7 @@ operator_lt::op1_range (frange &r,
 
     case BRS_FALSE:
       // On the FALSE side of x < NAN, we know nothing about x.
-      if (op2.known_isnan () || op2.maybe_isnan ())
+      if (op2.maybe_isnan ())
 	r.set_varying (type);
       else
 	build_ge (r, type, op2);
@@ -1018,7 +1018,7 @@ operator_lt::op2_range (frange &r,
 
     case BRS_FALSE:
       // On the FALSE side of NAN < x, we know nothing about x.
-      if (op1.known_isnan () || op1.maybe_isnan ())
+      if (op1.maybe_isnan ())
 	r.set_varying (type);
       else
 	build_le (r, type, op1);
@@ -1091,7 +1091,7 @@ operator_le::op1_range (frange &r,
 
     case BRS_FALSE:
       // On the FALSE side of x <= NAN, we know nothing about x.
-      if (op2.known_isnan () || op2.maybe_isnan ())
+      if (op2.maybe_isnan ())
 	r.set_varying (type);
       else
 	build_gt (r, type, op2);
@@ -1124,7 +1124,7 @@ operator_le::op2_range (frange &r,
 
     case BRS_FALSE:
       // On the FALSE side of NAN <= x, we know nothing about x.
-      if (op1.known_isnan () || op1.maybe_isnan ())
+      if (op1.maybe_isnan ())
 	r.set_varying (type);
       else if (op1.undefined_p ())
 	return false;
@@ -1210,7 +1210,7 @@ operator_gt::op1_range (frange &r,
 
     case BRS_FALSE:
       // On the FALSE side of x > NAN, we know nothing about x.
-      if (op2.known_isnan () || op2.maybe_isnan ())
+      if (op2.maybe_isnan ())
 	r.set_varying (type);
       else if (op2.undefined_p ())
 	return false;
@@ -1249,7 +1249,7 @@ operator_gt::op2_range (frange &r,
 
     case BRS_FALSE:
       // On The FALSE side of NAN > x, we know nothing about x.
-      if (op1.known_isnan () || op1.maybe_isnan ())
+      if (op1.maybe_isnan ())
 	r.set_varying (type);
       else if (op1.undefined_p ())
 	return false;
@@ -1323,7 +1323,7 @@ operator_ge::op1_range (frange &r,
 
     case BRS_FALSE:
       // On the FALSE side of x >= NAN, we know nothing about x.
-      if (op2.known_isnan () || op2.maybe_isnan ())
+      if (op2.maybe_isnan ())
 	r.set_varying (type);
       else if (op2.undefined_p ())
 	return false;
@@ -1357,7 +1357,7 @@ operator_ge::op2_range (frange &r, tree type,
 
     case BRS_FALSE:
       // On the FALSE side of NAN >= x, we know nothing about x.
-      if (op1.known_isnan () || op1.maybe_isnan ())
+      if (op1.maybe_isnan ())
 	r.set_varying (type);
       else if (op1.undefined_p ())
 	return false;
@@ -1720,7 +1720,7 @@ foperator_unordered_lt::op1_range (frange &r, tree type,
   switch (get_bool_state (r, lhs, type))
     {
     case BRS_TRUE:
-      if (op2.known_isnan () || op2.maybe_isnan ())
+      if (op2.maybe_isnan ())
 	r.set_varying (type);
       else if (op2.undefined_p ())
 	return false;
@@ -1754,7 +1754,7 @@ foperator_unordered_lt::op2_range (frange &r, tree type,
   switch (get_bool_state (r, lhs, type))
     {
     case BRS_TRUE:
-      if (op1.known_isnan () || op1.maybe_isnan ())
+      if (op1.maybe_isnan ())
 	r.set_varying (type);
       else if (op1.undefined_p ())
 	return false;
@@ -1832,7 +1832,7 @@ foperator_unordered_le::op1_range (frange &r, tree type,
   switch (get_bool_state (r, lhs, type))
     {
     case BRS_TRUE:
-      if (op2.known_isnan () || op2.maybe_isnan ())
+      if (op2.maybe_isnan ())
 	r.set_varying (type);
       else if (op2.undefined_p ())
 	return false;
@@ -1865,7 +1865,7 @@ foperator_unordered_le::op2_range (frange &r,
   switch (get_bool_state (r, lhs, type))
     {
     case BRS_TRUE:
-      if (op1.known_isnan () || op1.maybe_isnan ())
+      if (op1.maybe_isnan ())
 	r.set_varying (type);
       else if (op1.undefined_p ())
 	return false;
@@ -1945,7 +1945,7 @@ foperator_unordered_gt::op1_range (frange &r,
   switch (get_bool_state (r, lhs, type))
     {
     case BRS_TRUE:
-      if (op2.known_isnan () || op2.maybe_isnan ())
+      if (op2.maybe_isnan ())
 	r.set_varying (type);
       else if (op2.undefined_p ())
 	return false;
@@ -1980,7 +1980,7 @@ foperator_unordered_gt::op2_range (frange &r,
   switch (get_bool_state (r, lhs, type))
     {
     case BRS_TRUE:
-      if (op1.known_isnan () || op1.maybe_isnan ())
+      if (op1.maybe_isnan ())
 	r.set_varying (type);
       else if (op1.undefined_p ())
 	return false;
@@ -2060,7 +2060,7 @@ foperator_unordered_ge::op1_range (frange &r,
   switch (get_bool_state (r, lhs, type))
     {
     case BRS_TRUE:
-      if (op2.known_isnan () || op2.maybe_isnan ())
+      if (op2.maybe_isnan ())
 	r.set_varying (type);
       else if (op2.undefined_p ())
 	return false;
@@ -2094,7 +2094,7 @@ foperator_unordered_ge::op2_range (frange &r, tree type,
   switch (get_bool_state (r, lhs, type))
     {
     case BRS_TRUE:
-      if (op1.known_isnan () || op1.maybe_isnan ())
+      if (op1.maybe_isnan ())
 	r.set_varying (type);
       else if (op1.undefined_p ())
 	return false;

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