ppc: [liftoff] implement f32/64_set_cond

Change-Id: I294c465230b1c1b8bdb21e8e42bc419c8528d217
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2860742Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#74288}

src/wasm/baseline/ppc/liftoff-assembler-ppc.h

@@ -695,13 +695,18 @@ void LiftoffAssembler::emit_i64_set_cond(LiftoffCondition liftoff_cond,
 void LiftoffAssembler::emit_f32_set_cond(LiftoffCondition liftoff_cond,
                                          Register dst, DoubleRegister lhs,
                                          DoubleRegister rhs) {
-  bailout(kUnsupportedArchitecture, "emit_f32_set_cond");
+  fcmpu(lhs, rhs);
+  Label done;
+  mov(dst, Operand(1));
+  b(liftoff::ToCondition(liftoff_cond), &done);
+  mov(dst, Operand::Zero());
+  bind(&done);
 }
 
 void LiftoffAssembler::emit_f64_set_cond(LiftoffCondition liftoff_cond,
                                          Register dst, DoubleRegister lhs,
                                          DoubleRegister rhs) {
-  bailout(kUnsupportedArchitecture, "emit_f64_set_cond");
+  emit_f32_set_cond(liftoff_cond, dst, lhs, rhs);
 }
 
 bool LiftoffAssembler::emit_select(LiftoffRegister dst, Register condition,