[PULL 18/38] tcg/loongarch64: Implement revbit{8,32,64}

Reviewed-by: Anton Johansson <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Signed-off-by: Richard Henderson <[email protected]>
---
 tcg/loongarch64/tcg-target.c.inc | 34 +++++++++++++++++++++++++++++---
 1 file changed, 31 insertions(+), 3 deletions(-)

diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
index 97ed51d99c..7d89e80886 100644
--- a/tcg/loongarch64/tcg-target.c.inc
+++ b/tcg/loongarch64/tcg-target.c.inc
@@ -1866,16 +1866,44 @@ static const TCGOutOpUnary outop_bswap64 = {
     .out_rr = tgen_bswap64,
 };
 
+static void tgen_revbit8(TCGContext *s, TCGType type, TCGReg a0, TCGReg a1)
+{
+    if (type == TCG_TYPE_I32) {
+        tcg_out_opc_revbit_4b(s, a0, a1);
+    } else {
+        tcg_out_opc_revbit_8b(s, a0, a1);
+    }
+}
+
 static const TCGOutOpUnary outop_revbit8 = {
-    .base.static_constraint = C_NotImplemented,
+    .base.static_constraint = C_O1_I1(r, r),
+    .out_rr = tgen_revbit8;
 };
 
+static void tgen_revbit32(TCGContext *s, TCGType type,
+                          TCGReg a0, TCGReg a1, unsigned flags)
+{
+    tcg_out_opc_revbit_w(s, a0, a1);
+
+    /* All 32-bit values are computed sign-extended in the register.  */
+    if (type == TCG_TYPE_I64 && (flags & TCG_BSWAP_OZ)) {
+        tcg_out_ext32u(s, a0, a0);
+    }
+}
+
 static const TCGOutOpBswap outop_revbit32 = {
-    .base.static_constraint = C_NotImplemented,
+    .base.static_constraint = C_O1_I1(r, r),
+    .out_rr = tgen_revbit32,
 };
 
+static void tgen_revbit64(TCGContext *s, TCGType type, TCGReg a0, TCGReg a1)
+{
+    tcg_out_opc_revbit_d(s, a0, a1);
+}
+
 static const TCGOutOpUnary outop_revbit64 = {
-    .base.static_constraint = C_NotImplemented,
+    .base.static_constraint = C_O1_I1(r, r),
+    .out_rr = tgen_revbit64,
 };
 
 static void tgen_neg(TCGContext *s, TCGType type, TCGReg a0, TCGReg a1)
-- 
2.43.0