[gcc r10-7268] Complete change to resolve pr90275.

[Jeff Law]

https://gcc.gnu.org/g:529ea7d9596b26ba103578eeab448e9862a2d2c5

commit r10-7268-g529ea7d9596b26ba103578eeab448e9862a2d2c5
Author: Jeff Law <law@redhat.com>
Date:   Wed Mar 18 16:07:28 2020 -0600

    Complete change to resolve pr90275.
    
            PR rtl-optimization/90275
            * cse.c (cse_insn): Delete no-op register moves too.

Diff:
---
 gcc/ChangeLog | 5 +++++
 gcc/cse.c     | 1 -
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8694f272a9c..3a2e491113e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2020-03-12  Richard Sandiford  <richard.sandiford@arm.com>
+
+	PR rtl-optimization/90275
+	* cse.c (cse_insn): Delete no-op register moves too.
+
 2020-03-18  Martin Sebor  <msebor@redhat.com>
 
 	PR ipa/92799
diff --git a/gcc/cse.c b/gcc/cse.c
index 08984c17040..3e8724b3fed 100644
--- a/gcc/cse.c
+++ b/gcc/cse.c
@@ -5329,7 +5329,6 @@ cse_insn (rtx_insn *insn)
 	  else if (n_sets == 1
 		   && !CALL_P (insn)
 		   && (MEM_P (trial) || REG_P (trial))
-		   && MEM_P (dest)
 		   && rtx_equal_p (trial, dest)
 		   && !side_effects_p (dest)
 		   && (cfun->can_delete_dead_exceptions