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[COMMITTED] PR tree-optimization/106556 - Evaluate condition arguments with the correct type.

Message ID 8b1c215e-263e-b24d-9ab7-5b40c62142d5@redhat.com
State New
Headers show
Series [COMMITTED] PR tree-optimization/106556 - Evaluate condition arguments with the correct type. | expand

Commit Message

Andrew MacLeod Aug. 8, 2022, 8:44 p.m. UTC 
when evaluating a COND_EXPR, we need to evaluate both operands. With the 
recent changes to floating point, we missed that we are accidentally 
using the LHS range type for the operands.. that was fine when 
everything was an irange... but no so any more.

This patch simply uses the right range type for the temporary ranges.

Bootstrapped on x86_64-pc-linux-gnu with no regressions.  Pushed.

Andrew
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Patch

commit 6d57764711d3b4441d4d99876d9d3370bdec6284
Author: Andrew MacLeod <amacleod@redhat.com>
Date:   Mon Aug 8 15:13:51 2022 -0400

    Evaluate condition arguments with the correct type.
    
    Processing of a cond_expr requires that a range of the correct type for the
    operands of the cond_expr is passed in.
    
            PR tree-optimization/106556
            gcc/
            * gimple-range-gori.cc (gori_compute::condexpr_adjust): Use the
              type of the cond_expr operands being evaluted.
    
            gcc/testsuite/
            * gfortran.dg/pr106556.f90: New.

diff --git a/gcc/gimple-range-gori.cc b/gcc/gimple-range-gori.cc
index a43e44c841e..8879e44cba1 100644
--- a/gcc/gimple-range-gori.cc
+++ b/gcc/gimple-range-gori.cc
@@ -1398,16 +1398,17 @@  gori_compute::condexpr_adjust (vrange &r1, vrange &r2, gimple *, tree cond,
     }
 
    // Now solve for SSA1 or SSA2 if they are in the dependency chain.
-  Value_Range tmp (type);
    if (ssa1 && in_chain_p (ssa1, cond_name))
     {
-      if (compute_operand_range (tmp, def_stmt, cond_true, ssa1, src))
-	r1.intersect (tmp);
+      Value_Range tmp1 (TREE_TYPE (ssa1));
+      if (compute_operand_range (tmp1, def_stmt, cond_true, ssa1, src))
+	r1.intersect (tmp1);
     }
   if (ssa2 && in_chain_p (ssa2, cond_name))
     {
-      if (compute_operand_range (tmp, def_stmt, cond_false, ssa2, src))
-	r2.intersect (tmp);
+      Value_Range tmp2 (TREE_TYPE (ssa2));
+      if (compute_operand_range (tmp2, def_stmt, cond_false, ssa2, src))
+	r2.intersect (tmp2);
     }
   if (idx)
     {
diff --git a/gcc/testsuite/gfortran.dg/pr106556.f90 b/gcc/testsuite/gfortran.dg/pr106556.f90
new file mode 100644
index 00000000000..01b89a8eee2
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr106556.f90
@@ -0,0 +1,10 @@ 
+! { dg-do compile }
+! { dg-options "-O1 -fnon-call-exceptions -ftree-loop-if-convert" }
+
+
+program p
+  real :: a(2)
+
+  a(:) = 1.0
+  if (minloc (a, dim = 1).ne.1) STOP 1
+end