From: Torbjörn SVENSSON <[email protected]>
vect_slp_v2qi_store_unalign tests whether the vectorizer handles a V2QI
store through a byte-aligned base, but some -Wstringop-overflow tests
instead depend on a V2QI store at a known one-byte misalignment from a
defined object.
These two variants are not the same on armv7ve with -mfloat-abi=hard.
Add a separate effective target for the latter case.
PR testsuite/124342
PR testsuite/124619
gcc/ChangeLog:
* doc/sourcebuild.texi (vect_slp_v2qi_store_unalign): Document.
(vect_slp_v2qi_store_misalign): Likewise.
gcc/testsuite/ChangeLog:
* lib/target-supports.exp (check_vect_slp_store_usage): Add
TEST_V2QI_MISALIGN.
(check_effective_target_vect_slp_v2qi_store_misalign): New proc.
* c-c++-common/Wstringop-overflow-2.c: Use it.
* g++.dg/warn/Wstringop-overflow-3.C: Likewise.
Signed-off-by: Torbjörn SVENSSON <[email protected]>
---
I've tested this change on top of r17-2833-g32657f29f91871 and
r16-9480-g967a69a03886ebd6.
Ok for trunk and releases/gcc-16?
--
vect_slp_v2qi_store_unalign tests whether the vectorizer handles a V2QI
store through a byte-aligned base, but some -Wstringop-overflow tests
instead depend on a V2QI store at a known one-byte misalignment from a
defined object.
These two variants are not the same on armv7ve with -mfloat-abi=hard.
Add a separate effective target for the latter case.
PR testsuite/124342
PR testsuite/124619
gcc/ChangeLog:
* doc/sourcebuild.texi (vect_slp_v2qi_store_unalign): Document.
(vect_slp_v2qi_store_misalign): Likewise.
gcc/testsuite/ChangeLog:
* lib/target-supports.exp (check_vect_slp_store_usage): Add
TEST_V2QI_MISALIGN.
(check_effective_target_vect_slp_v2qi_store_misalign): New proc.
* c-c++-common/Wstringop-overflow-2.c: Use it.
* g++.dg/warn/Wstringop-overflow-3.C: Likewise.
Signed-off-by: Torbjörn SVENSSON <[email protected]>
--
This is a forge pull request published on the gcc-patches mailing list mailing
list
as requested by Torbjörn Svensson via Sourceware Forge
<[email protected]>.
Forge discussion: https://forge.sourceware.org/gcc/gcc/pulls/215
Get it locally using:
```
git fetch forge-upstream "+refs/versioned_pull/215/*:refs/versioned_pull/215/*"
git switch -c "pr-215-v1" "refs/versioned_pull/215/1/head"
```
Or, download the patch at: https://forge.sourceware.org/gcc/gcc/pulls/215.diff
Created on: 2026-08-10 17:42:02+00:00
Latest update: 2026-08-10 18:03:02+00:00
Changes: 4 changed files, 77 additions, 47 deletions
Head revision: azoff/gcc ref pr/Wstringop-overflow commit
1a3f4342b3ffa28514704ca226fdef1fda46a477
Base revision: gcc/gcc ref trunk commit
32657f29f918712ad7110bd54d8ebb3bf6b0a2a8 r17-2833-g32657f29f91871
Merge base: 32657f29f918712ad7110bd54d8ebb3bf6b0a2a8
Requested Reviewers:
Changed files:
- M: gcc/doc/sourcebuild.texi
- M: gcc/testsuite/c-c++-common/Wstringop-overflow-2.c
- M: gcc/testsuite/g++.dg/warn/Wstringop-overflow-3.C
- M: gcc/testsuite/lib/target-supports.exp
gcc/doc/sourcebuild.texi | 8 +++
.../c-c++-common/Wstringop-overflow-2.c | 50 +++++++++----------
.../g++.dg/warn/Wstringop-overflow-3.C | 44 ++++++++--------
gcc/testsuite/lib/target-supports.exp | 22 ++++++++
4 files changed, 77 insertions(+), 47 deletions(-)
diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi
index 2c41583ced51e..a0e78a7ca3395 100644
--- a/gcc/doc/sourcebuild.texi
+++ b/gcc/doc/sourcebuild.texi
@@ -1946,6 +1946,14 @@ Target supports loop vectorization with partial vectors
and
Target supports vectorization of 2-byte char stores with 2-byte aligned
address at plain @option{-O2}.
+@item vect_slp_v2qi_store_unalign
+Target supports vectorization of 2-byte char stores with an unaligned
+address at plain @option{-O2}.
+
+@item vect_slp_v2qi_store_misalign
+Target supports vectorization of 2-byte char stores at a known one-byte
+misaligned address at plain @option{-O2}.
+
@item vect_slp_v4qi_store_align
Target supports vectorization of 4-byte char stores with 4-byte aligned
address at plain @option{-O2}.
diff --git a/gcc/testsuite/c-c++-common/Wstringop-overflow-2.c
b/gcc/testsuite/c-c++-common/Wstringop-overflow-2.c
index 3f9171947c252..4b0e443f28852 100644
--- a/gcc/testsuite/c-c++-common/Wstringop-overflow-2.c
+++ b/gcc/testsuite/c-c++-common/Wstringop-overflow-2.c
@@ -19,7 +19,7 @@ struct Ax ax_;
void gax_ (void)
{
ax_.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
- ax_.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ ax_.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
ax_.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -30,7 +30,7 @@ struct Ax ax0 = { 0 };
void gax0 (void)
{
ax0.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
- ax0.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ ax0.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
ax0.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -41,7 +41,7 @@ struct Ax ax0_ = { 0, { } };
void gax0_ (void)
{
ax0_.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
- ax0_.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ ax0_.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
ax0_.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -51,8 +51,8 @@ struct Ax ax1 = { 1, { 0 } };
void gax1 (void)
{
- ax1.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_unalign } } }
- ax1.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ ax1.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_misalign } } }
+ ax1.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
ax1.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -100,7 +100,7 @@ struct A0 a0_;
void ga0_ (void)
{
a0_.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
- a0_.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a0_.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a0_.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -111,7 +111,7 @@ struct A0 a00 = { 0 };
void ga00 (void)
{
a00.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
- a00.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a00.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a00.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -122,7 +122,7 @@ struct A0 a00_ = { 0, { } };
void ga00_ (void)
{
a00_.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
- a00_.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a00_.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a00_.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -166,13 +166,13 @@ struct A1 a1_;
void ga1_ (void)
{
- a1_.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_unalign } } }
- a1_.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a1_.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_misalign } } }
+ a1_.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a1_.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
struct A1 a;
- a.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_unalign } } }
- a.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_misalign } } }
+ a.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
sink (&a);
}
@@ -183,8 +183,8 @@ struct A1 a1__ = { 0 };
void ga1__ (void)
{
- a1__.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" ""
{ target { vect_slp_v2qi_store_unalign } } }
- a1__.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" ""
{ xfail { vect_slp_v2qi_store_unalign } } }
+ a1__.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" ""
{ target { vect_slp_v2qi_store_misalign } } }
+ a1__.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" ""
{ xfail { vect_slp_v2qi_store_misalign } } }
a1__.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
struct A1 a = { 1 };
@@ -200,8 +200,8 @@ struct A1 a1_0 = { 0, { } };
void ga1_0_ (void)
{
- a1_0.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_unalign } } }
- a1_0.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a1_0.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_misalign } } }
+ a1_0.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a1_0.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
struct A1 a = { 1, { } };
@@ -217,8 +217,8 @@ struct A1 a1_1 = { 0, { 1 } };
void ga1_1 (void)
{
- a1_1.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_unalign } } }
- a1_1.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a1_1.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_misalign } } }
+ a1_1.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a1_1.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
struct A1 a = { 0, { 1 } }; // { dg-warning "\\\[-Wstringop-overflow"
"pr102706" { target { vect_slp_v4qi_store_align } } }
@@ -266,12 +266,12 @@ struct A1i a1i_;
void ga1i_ (void)
{
a1i_.a[0] = 0;
- a1i_.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a1i_.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a1i_.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
struct A1i a;
a.a[0] = 1;
- a.a[1] = 2; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a.a[1] = 2; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a.a[2] = 3; // { dg-warning "\\\[-Wstringop-overflow" }
sink (&a);
}
@@ -283,7 +283,7 @@ struct A1i a1i__ = { 0 };
void ga1i__ (void)
{
a1i__.a[0] = 0;
- a1i__.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" ""
{ xfail { vect_slp_v2qi_store_unalign } } }
+ a1i__.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" ""
{ xfail { vect_slp_v2qi_store_misalign } } }
a1i__.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
struct A1i a = { 0 };
@@ -299,8 +299,8 @@ struct A1 a1i_0 = { 0, { } };
void ga1i_0_ (void)
{
- a1i_0.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_unalign } } }
- a1i_0.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a1i_0.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_misalign } } }
+ a1i_0.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a1i_0.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
struct A1 a = { 0, { } };
@@ -316,8 +316,8 @@ struct A1 a1i_1 = { 0, { 1 } };
void ga1i_1 (void)
{
- a1i_1.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_unalign } } }
- a1i_1.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a1i_1.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_misalign } } }
+ a1i_1.a[1] = 1; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a1i_1.a[2] = 2; // { dg-warning "\\\[-Wstringop-overflow" }
struct A1 a = { 0, { 1 } }; // { dg-warning "\\\[-Wstringop-overflow"
"pr102462" { target { vect_slp_v4qi_store_align } } }
diff --git a/gcc/testsuite/g++.dg/warn/Wstringop-overflow-3.C
b/gcc/testsuite/g++.dg/warn/Wstringop-overflow-3.C
index e1d547fe4d40c..0e8523b8ed182 100644
--- a/gcc/testsuite/g++.dg/warn/Wstringop-overflow-3.C
+++ b/gcc/testsuite/g++.dg/warn/Wstringop-overflow-3.C
@@ -21,7 +21,7 @@ Ax ax_;
NOIPA void gax_ ()
{
ax_.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
- ax_.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ ax_.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
ax_.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -32,7 +32,7 @@ Ax ax0 = { 0 };
NOIPA void gax0 ()
{
ax0.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
- ax0.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ ax0.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
ax0.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -43,7 +43,7 @@ Ax ax0_ = { 0, { } };
NOIPA void gax0_ ()
{
ax0_.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
- ax0_.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ ax0_.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
ax0_.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -53,8 +53,8 @@ Ax ax1 = { 1, { 0 } };
NOIPA void gax1 ()
{
- ax1.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_unalign } } }
- ax1.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ ax1.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_misalign } } }
+ ax1.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
ax1.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -102,7 +102,7 @@ A0 a0_;
NOIPA void ga0_ ()
{
a0_.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
- a0_.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a0_.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a0_.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -113,7 +113,7 @@ A0 a00 = { 0 };
NOIPA void ga00 ()
{
a00.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
- a00.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a00.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a00.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -124,7 +124,7 @@ A0 a00_ = { 0, { } };
NOIPA void ga00_ ()
{
a00_.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
- a00_.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a00_.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a00_.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -168,8 +168,8 @@ A1 a1_;
NOIPA void ga1_ ()
{
- a1_.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_unalign } } }
- a1_.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a1_.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_misalign } } }
+ a1_.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a1_.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -179,8 +179,8 @@ A1 a1__ = { 0 };
NOIPA void ga1__ ()
{
- a1__.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" ""
{ target { vect_slp_v2qi_store_unalign } } }
- a1__.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" ""
{ xfail { vect_slp_v2qi_store_unalign } } }
+ a1__.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" ""
{ target { vect_slp_v2qi_store_misalign } } }
+ a1__.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" ""
{ xfail { vect_slp_v2qi_store_misalign } } }
a1__.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -190,8 +190,8 @@ A1 a1_0 = { 0, { } };
NOIPA void ga1_0_ ()
{
- a1_0.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_unalign } } }
- a1_0.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a1_0.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_misalign } } }
+ a1_0.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a1_0.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -201,8 +201,8 @@ A1 a1_1 = { 0, { 1 } };
NOIPA void ga1_1 ()
{
- a1_1.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_unalign } } }
- a1_1.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a1_1.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_misalign } } }
+ a1_1.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a1_1.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -244,7 +244,7 @@ A1i a1i_;
NOIPA void ga1i_ ()
{
a1i_.a[0] = 0;
- a1i_.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a1i_.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a1i_.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -255,7 +255,7 @@ A1i a1i__ = { 0 };
NOIPA void ga1i__ ()
{
a1i__.a[0] = 0;
- a1i__.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" ""
{ xfail { vect_slp_v2qi_store_unalign } } }
+ a1i__.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" ""
{ xfail { vect_slp_v2qi_store_misalign } } }
a1i__.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -265,8 +265,8 @@ A1 a1i_0 = { 0, { } };
NOIPA void ga1i_0_ ()
{
- a1i_0.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_unalign } } }
- a1i_0.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a1i_0.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_misalign } } }
+ a1i_0.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a1i_0.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
@@ -276,8 +276,8 @@ A1 a1i_1 = { 0, { 1 } };
NOIPA void ga1i_1 ()
{
- a1i_1.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_unalign } } }
- a1i_1.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_unalign } } }
+ a1i_1.a[0] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
target { vect_slp_v2qi_store_misalign } } }
+ a1i_1.a[1] = 0; // { dg-warning "\\\[-Wstringop-overflow" "" {
xfail { vect_slp_v2qi_store_misalign } } }
a1i_1.a[2] = 0; // { dg-warning "\\\[-Wstringop-overflow" }
}
diff --git a/gcc/testsuite/lib/target-supports.exp
b/gcc/testsuite/lib/target-supports.exp
index 42cbb5ce3df0d..d6878c6f2c3e1 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -9667,6 +9667,19 @@ proc check_vect_slp_store_usage { pattern macro } {
p[0] = 0;
p[1] = 1;
}
+ #elif TEST_V2QI_MISALIGN
+ struct A2
+ {
+ char n;
+ char a[2];
+ };
+ struct A2 p __attribute__ ((aligned (2)));
+ void
+ foo3_misalign ()
+ {
+ p.a[0] = 0;
+ p.a[1] = 1;
+ }
#elif TEST_V4HI
struct Ax
{
@@ -9776,6 +9789,15 @@ proc check_effective_target_vect_slp_v2qi_store_unalign
{ } {
expr [check_vect_slp_store_usage $pattern $macro ] }]
}
+# Return the true if target support vectorization of 2-byte char stores
+# with a known one-byte misaligned address at plain O2.
+proc check_effective_target_vect_slp_v2qi_store_misalign { } {
+ set pattern {add new stmt: MEM <vector\(2\) char>}
+ set macro "TEST_V2QI_MISALIGN"
+ return [check_cached_effective_target vect_slp_v2qi_store_misalign {
+ expr [check_vect_slp_store_usage $pattern $macro ] }]
+}
+
# Return the true if target support vectorization of 4-byte char stores
# with 4-byte aligned address at plain O2.
# NB: This target should be removed after real issues are fixed for
--
2.54.0
