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.
Regstrapped on x86_64-linux-gnu, testcase verified with a cross to
aarch64. Ok to install?
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.
---
gcc/builtins.c | 2 +-
gcc/testsuite/gcc.target/aarch64/pr100518.c | 9 +++++++++
2 files changed, 10 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/gcc.target/aarch64/pr100518.c
diff --git a/gcc/builtins.c b/gcc/builtins.c
index 304d87dafb750..cd8947b4de286 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 0000000000000..5ca599f5d2e0e
--- /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);
+}
--
Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/
Free Software Activist GNU Toolchain Engineer
Disinformation flourishes because many people care deeply about injustice
but very few check the facts. Ask me about <https://stallmansupport.org>
