public inbox for gcc-cvs@sourceware.org
help / color / mirror / Atom feed
* [gcc r14-9277] d: Fix gdc -O2 -mavx generates misaligned vmovdqa instruction [PR114171]
@ 2024-03-03 1:33 Iain Buclaw
0 siblings, 0 replies; only message in thread
From: Iain Buclaw @ 2024-03-03 1:33 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:623f52775e677bb3d6e9e7ef97196741dd904b1e
commit r14-9277-g623f52775e677bb3d6e9e7ef97196741dd904b1e
Author: Iain Buclaw <ibuclaw@gdcproject.org>
Date: Sun Mar 3 02:26:37 2024 +0100
d: Fix gdc -O2 -mavx generates misaligned vmovdqa instruction [PR114171]
PR d/114171
gcc/d/ChangeLog:
* d-codegen.cc (lower_struct_comparison): Keep alignment of original
type in reinterpret cast for comparison.
gcc/testsuite/ChangeLog:
* gdc.dg/torture/pr114171.d: New test.
Diff:
---
gcc/d/d-codegen.cc | 1 +
gcc/testsuite/gdc.dg/torture/pr114171.d | 29 +++++++++++++++++++++++++++++
2 files changed, 30 insertions(+)
diff --git a/gcc/d/d-codegen.cc b/gcc/d/d-codegen.cc
index 5bc233928aa..43d7739f8fc 100644
--- a/gcc/d/d-codegen.cc
+++ b/gcc/d/d-codegen.cc
@@ -1006,6 +1006,7 @@ lower_struct_comparison (tree_code code, StructDeclaration *sd,
if (tmode == NULL_TREE)
tmode = make_unsigned_type (GET_MODE_BITSIZE (mode.require ()));
+ tmode = build_aligned_type (tmode, TYPE_ALIGN (stype));
t1ref = build_vconvert (tmode, t1ref);
t2ref = build_vconvert (tmode, t2ref);
diff --git a/gcc/testsuite/gdc.dg/torture/pr114171.d b/gcc/testsuite/gdc.dg/torture/pr114171.d
new file mode 100644
index 00000000000..0f9ffcab916
--- /dev/null
+++ b/gcc/testsuite/gdc.dg/torture/pr114171.d
@@ -0,0 +1,29 @@
+// { dg-do run }
+// { dg-additional-options "-mavx" { target avx_runtime } }
+// { dg-skip-if "needs gcc/config.d" { ! d_runtime } }
+import gcc.builtins;
+
+struct S1
+{
+ string label;
+}
+
+struct S2
+{
+ ulong pad;
+ S1 label;
+}
+
+pragma(inline, false)
+auto newitem()
+{
+ void *p = __builtin_malloc(S2.sizeof);
+ __builtin_memset(p, 0, S2.sizeof);
+ return cast(S2*) p;
+}
+
+int main()
+{
+ auto bn = newitem();
+ return bn.label is S1.init ? 0 : 1;
+}
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2024-03-03 1:33 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-03-03 1:33 [gcc r14-9277] d: Fix gdc -O2 -mavx generates misaligned vmovdqa instruction [PR114171] Iain Buclaw
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).