We were only constructing the 64-bit element, and not
replicating the 64-bit element across the rest of the vector.

Cc: qemu-stable@nongnu.org
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---

This bug is visible running RISU for aarch64 on x86_32.


r~

---
 tcg/i386/tcg-target.inc.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/tcg/i386/tcg-target.inc.c b/tcg/i386/tcg-target.inc.c
index 223dba9c8c..7f61eeedd0 100644
--- a/tcg/i386/tcg-target.inc.c
+++ b/tcg/i386/tcg-target.inc.c
@@ -2855,9 +2855,13 @@ static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc,
         goto gen_simd;
 #if TCG_TARGET_REG_BITS == 32
     case INDEX_op_dup2_vec:
-        /* Constraints have already placed both 32-bit inputs in xmm regs.  */
-        insn = OPC_PUNPCKLDQ;
-        goto gen_simd;
+        /* First merge the two 32-bit inputs to a single 64-bit element. */
+        tcg_out_vex_modrm(s, OPC_PUNPCKLDQ, a0, a1, a2);
+        /* Then replicate the 64-bit elements across the rest of the vector. */
+        if (type != TCG_TYPE_V64) {
+            tcg_out_dup_vec(s, type, MO_64, a0, a0);
+        }
+        break;
 #endif
     case INDEX_op_abs_vec:
         insn = abs_insn[vece];
-- 
2.20.1

Patchew URL: https://patchew.org/QEMU/20200331035456.6494-3-richard.henderson@linaro.org/



Hi,

This series failed the docker-quick@centos7 build test. Please find the testing commands and
their output below. If you have Docker installed, you can probably reproduce it
locally.

=== TEST SCRIPT BEGIN ===
#!/bin/bash
make docker-image-centos7 V=1 NETWORK=1
time make docker-test-quick@centos7 SHOW_ENV=1 J=14 NETWORK=1
=== TEST SCRIPT END ===

-..............................................................................................
+.....................................E........................................................
+======================================================================
+ERROR: test_pause (__main__.TestSingleBlockdev)
+----------------------------------------------------------------------
+Traceback (most recent call last):
+  File "041", line 108, in test_pause
---
 Ran 94 tests
 
-OK
+FAILED (errors=1)
  TEST    iotest-qcow2: 042
qemu-system-aarch64: -accel kvm: invalid accelerator kvm
qemu-system-aarch64: falling back to tcg
---
Not run: 259
Failures: 041
Failed 1 of 116 iotests
make: *** [check-tests/check-block.sh] Error 1
make: *** Waiting for unfinished jobs....
  TEST    check-qtest-aarch64: tests/qtest/qos-test
Traceback (most recent call last):
---
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['sudo', '-n', 'docker', 'run', '--label', 'com.qemu.instance.uuid=d04f9fbd6d784122a1e96e92f2c9f226', '-u', '1001', '--security-opt', 'seccomp=unconfined', '--rm', '-e', 'TARGET_LIST=', '-e', 'EXTRA_CONFIGURE_OPTS=', '-e', 'V=', '-e', 'J=14', '-e', 'DEBUG=', '-e', 'SHOW_ENV=1', '-e', 'CCACHE_DIR=/var/tmp/ccache', '-v', '/home/patchew/.cache/qemu-docker-ccache:/var/tmp/ccache:z', '-v', '/var/tmp/patchew-tester-tmp-7gje6x7k/src/docker-src.2020-03-31-04.00.31.473:/var/tmp/qemu:z,ro', 'qemu:centos7', '/var/tmp/qemu/run', 'test-quick']' returned non-zero exit status 2.
filter=--filter=label=com.qemu.instance.uuid=d04f9fbd6d784122a1e96e92f2c9f226
make[1]: *** [docker-run] Error 1
make[1]: Leaving directory `/var/tmp/patchew-tester-tmp-7gje6x7k/src'
make: *** [docker-run-test-quick@centos7] Error 2

real    14m27.100s
user    0m9.065s


The full log is available at
http://patchew.org/logs/20200331035456.6494-3-richard.henderson@linaro.org/testing.docker-quick@centos7/?type=message.
---
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