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[PULL,v2,2/3] tcg/i386: Support INDEX_op_dup2_vec for -m32

Message ID 20180315173855.22456-3-richard.henderson@linaro.org
State Accepted
Commit 7f34ed4bcdfda55f978f51aadca64aa970c9f4b6
Headers show
Series tcg queued patches | expand

Commit Message

Richard Henderson March 15, 2018, 5:38 p.m. UTC 
Unknown why -m32 was passing with gcc but not clang; it should have
failed for both.  This would be used for tcg_gen_dup_i64_vec, and
visible with the right TB and an aarch64 guest.

Reported-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 tcg/i386/tcg-target.inc.c | 9 +++++++++
 1 file changed, 9 insertions(+)

-- 
2.14.3
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Patch

diff --git a/tcg/i386/tcg-target.inc.c b/tcg/i386/tcg-target.inc.c
index fc05909d1d..d7e59e79c5 100644
--- a/tcg/i386/tcg-target.inc.c
+++ b/tcg/i386/tcg-target.inc.c
@@ -2696,6 +2696,12 @@  static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc,
     case INDEX_op_x86_packus_vec:
         insn = packus_insn[vece];
         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;
+#endif
     gen_simd:
         tcg_debug_assert(insn != OPC_UD2);
         if (type == TCG_TYPE_V256) {
@@ -3045,6 +3051,9 @@  static const TCGTargetOpDef *tcg_target_op_def(TCGOpcode op)
     case INDEX_op_x86_vperm2i128_vec:
     case INDEX_op_x86_punpckl_vec:
     case INDEX_op_x86_punpckh_vec:
+#if TCG_TARGET_REG_BITS == 32
+    case INDEX_op_dup2_vec:
+#endif
         return &x_x_x;
     case INDEX_op_dup_vec:
     case INDEX_op_shli_vec: