From: Alexandre Oliva <oliva@adacore.com>
Date: Wed, 15 Dec 2021 05:22:34 +0000 (-0300)
Subject: [PR100518] store by mult pieces: keep addr in Pmode
X-Git-Tag: basepoints/gcc-13~2329
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=71cc9b8c39148d19a8043b74ca8b6b4e8b8072ca;p=thirdparty%2Fgcc.git

[PR100518] store by mult pieces: keep addr in Pmode

The conversion of a MEM address to ptr_mode in
try_store_by_multiple_pieces was misguided: copy_addr_to_reg expects
Pmode for addresses.


for  gcc/ChangeLog

	PR target/100518
	* builtins.c (try_store_by_multiple_pieces): Drop address
	conversion to ptr_mode.

for  gcc/testsuite/ChangeLog

	PR target/100518
	* gcc.target/aarch64/pr100518.c: New.
---

diff --git a/gcc/builtins.c b/gcc/builtins.c
index 304d87dafb75..cd8947b4de28 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -4003,7 +4003,7 @@ try_store_by_multiple_pieces (rtx to, rtx len, unsigned int ctz_len,
       constfundata = &valc;
     }
 
-  rtx ptr = copy_addr_to_reg (convert_to_mode (ptr_mode, XEXP (to, 0), 0));
+  rtx ptr = copy_addr_to_reg (XEXP (to, 0));
   rtx rem = copy_to_mode_reg (ptr_mode, convert_to_mode (ptr_mode, len, 0));
   to = replace_equiv_address (to, ptr);
   set_mem_align (to, align);
diff --git a/gcc/testsuite/gcc.target/aarch64/pr100518.c b/gcc/testsuite/gcc.target/aarch64/pr100518.c
new file mode 100644
index 000000000000..5ca599f5d2e0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/pr100518.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-options "-mabi=ilp32 -mstrict-align -O2" } */
+
+int unsigned_range_min, unsigned_range_max, a11___trans_tmp_1;
+
+void a11() {
+  a11___trans_tmp_1 = unsigned_range_max < unsigned_range_min;
+  __builtin_memset((char *)1, 0, a11___trans_tmp_1);
+}